./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.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_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/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 b9551eac17e9ca0a42612f73eb01545dde991582 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:29,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:29,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:29,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:29,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:29,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:29,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:29,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:29,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:30,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:30,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:30,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:30,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:30,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:30,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:30,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:30,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:30,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:30,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:30,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:30,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:30,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:30,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:30,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:30,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:30,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:30,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:30,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:30,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:30,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:30,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:30,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:30,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:30,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:30,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:30,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:30,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:30,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:30,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:30,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:30,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:30,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:57:30,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:30,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:30,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:30,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:30,096 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:30,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:30,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:30,097 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:30,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:30,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:30,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:30,099 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:57:30,099 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:57:30,100 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:57:30,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:30,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:57:30,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:30,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:30,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:30,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:30,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:30,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:30,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:30,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:30,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:30,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:30,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:30,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:30,105 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_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9551eac17e9ca0a42612f73eb01545dde991582 [2020-11-28 02:57:30,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:30,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:30,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:30,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:30,385 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:30,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2020-11-28 02:57:30,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/data/0be8558af/a300949210364597ab0f1e3bccd47b03/FLAGbb6af1c28 [2020-11-28 02:57:31,030 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:31,035 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2020-11-28 02:57:31,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/data/0be8558af/a300949210364597ab0f1e3bccd47b03/FLAGbb6af1c28 [2020-11-28 02:57:31,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/data/0be8558af/a300949210364597ab0f1e3bccd47b03 [2020-11-28 02:57:31,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:31,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:57:31,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:31,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:31,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:31,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ee473d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31, skipping insertion in model container [2020-11-28 02:57:31,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:31,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:31,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:31,719 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:31,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:31,798 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:31,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31 WrapperNode [2020-11-28 02:57:31,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:31,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:31,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:31,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:31,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:31,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:31,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:31,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:31,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/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 [2020-11-28 02:57:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:57:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 02:57:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 02:57:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 02:57:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 02:57:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 02:57:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:57:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:57:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:57:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:57:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:57:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:57:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:57:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:57:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:57:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:57:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:57:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:57:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:57:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:57:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:57:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:57:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:57:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 02:57:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 02:57:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 02:57:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 02:57:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 02:57:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:57:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:57:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:57:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:57:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:57:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:57:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:57:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:57:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:57:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:57:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:57:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:57:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:57:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:57:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:57:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:57:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:57:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:57:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:57:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:57:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:57:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:57:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:57:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:57:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:57:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:57:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:57:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:57:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:57:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:57:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:57:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:57:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:57:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:57:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:57:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:57:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:57:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:57:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:57:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:57:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:57:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:57:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:57:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:57:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:57:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:57:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:57:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:57:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:57:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:57:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:57:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:57:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:57:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:57:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:57:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:57:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:57:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:57:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:57:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:57:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:57:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:57:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:57:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:57:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:57:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:57:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:57:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:57:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:57:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:57:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:57:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:57:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:57:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:57:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:57:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:57:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:57:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:57:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:57:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:57:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:57:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:57:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:57:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:57:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:57:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:57:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:57:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:57:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:57:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:57:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:32,547 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:32,547 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 02:57:32,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32 BoogieIcfgContainer [2020-11-28 02:57:32,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:32,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:32,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:32,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:32,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:31" (1/3) ... [2020-11-28 02:57:32,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c40544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:32, skipping insertion in model container [2020-11-28 02:57:32,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (2/3) ... [2020-11-28 02:57:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c40544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:32, skipping insertion in model container [2020-11-28 02:57:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32" (3/3) ... [2020-11-28 02:57:32,566 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2020-11-28 02:57:32,577 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:32,582 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 02:57:32,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 02:57:32,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:32,630 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:57:32,630 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:32,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:32,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:32,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:32,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:32,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 02:57:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:57:32,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:32,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:32,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2020-11-28 02:57:32,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:32,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915357318] [2020-11-28 02:57:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:32,801 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:32,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891154104] [2020-11-28 02:57:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/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 [2020-11-28 02:57:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:32,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:57:32,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:33,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915357318] [2020-11-28 02:57:33,108 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:33,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891154104] [2020-11-28 02:57:33,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:33,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:33,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987508817] [2020-11-28 02:57:33,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:33,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:33,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:33,136 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-11-28 02:57:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:33,206 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-28 02:57:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:33,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:57:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:33,216 INFO L225 Difference]: With dead ends: 33 [2020-11-28 02:57:33,216 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 02:57:33,217 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 [2020-11-28 02:57:33,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 02:57:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 02:57:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:57:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-11-28 02:57:33,251 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-11-28 02:57:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:33,252 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-11-28 02:57:33,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-11-28 02:57:33,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:33,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:33,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:33,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 02:57:33,473 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2020-11-28 02:57:33,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:33,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520185775] [2020-11-28 02:57:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:33,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:33,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014753264] [2020-11-28 02:57:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/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 [2020-11-28 02:57:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:33,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:33,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:33,678 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-28 02:57:33,679 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 [2020-11-28 02:57:33,679 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:33,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:33,689 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. [2020-11-28 02:57:33,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-11-28 02:57:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:33,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520185775] [2020-11-28 02:57:33,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:33,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014753264] [2020-11-28 02:57:33,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:33,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:33,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579219305] [2020-11-28 02:57:33,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:33,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:33,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:33,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:33,704 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-11-28 02:57:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:33,739 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-28 02:57:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:33,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-28 02:57:33,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:33,740 INFO L225 Difference]: With dead ends: 28 [2020-11-28 02:57:33,746 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 02:57:33,747 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 [2020-11-28 02:57:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 02:57:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 02:57:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 02:57:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-11-28 02:57:33,752 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2020-11-28 02:57:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:33,752 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-11-28 02:57:33,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-11-28 02:57:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:33,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:33,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:33,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:33,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:33,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2020-11-28 02:57:33,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:33,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974897825] [2020-11-28 02:57:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:33,976 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:33,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524111550] [2020-11-28 02:57:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/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 [2020-11-28 02:57:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:34,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:57:34,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:34,153 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_25|]} [2020-11-28 02:57:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 02:57:34,161 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2020-11-28 02:57:34,162 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:34,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:34,186 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-28 02:57:34,192 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:34,208 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:34,238 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-28 02:57:34,238 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:30, output treesize:35 [2020-11-28 02:57:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:34,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974897825] [2020-11-28 02:57:34,372 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:34,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524111550] [2020-11-28 02:57:34,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:34,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:34,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860768438] [2020-11-28 02:57:34,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:34,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:34,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:34,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:34,374 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-11-28 02:57:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:34,623 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-11-28 02:57:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:34,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 02:57:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:34,626 INFO L225 Difference]: With dead ends: 32 [2020-11-28 02:57:34,626 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 02:57:34,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 02:57:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-11-28 02:57:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:57:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-11-28 02:57:34,631 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2020-11-28 02:57:34,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:34,631 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-11-28 02:57:34,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-11-28 02:57:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:34,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:34,632 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:34,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:34,833 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:34,834 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2020-11-28 02:57:34,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:34,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211606518] [2020-11-28 02:57:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:34,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:34,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573401729] [2020-11-28 02:57:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:34,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:35,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211606518] [2020-11-28 02:57:35,019 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:35,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573401729] [2020-11-28 02:57:35,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:35,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:35,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758443603] [2020-11-28 02:57:35,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:35,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:35,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:35,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:35,021 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-11-28 02:57:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:35,195 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-28 02:57:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:35,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 02:57:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:35,197 INFO L225 Difference]: With dead ends: 51 [2020-11-28 02:57:35,197 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 02:57:35,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 02:57:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2020-11-28 02:57:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 02:57:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-11-28 02:57:35,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2020-11-28 02:57:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:35,203 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-11-28 02:57:35,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-11-28 02:57:35,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:35,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:35,205 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:35,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:35,405 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:35,406 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2020-11-28 02:57:35,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:35,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984408467] [2020-11-28 02:57:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:35,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:35,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901116527] [2020-11-28 02:57:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:35,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:57:35,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:35,569 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2020-11-28 02:57:35,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 02:57:35,576 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2020-11-28 02:57:35,576 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:35,593 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:35,600 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-28 02:57:35,603 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:35,612 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:35,616 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-28 02:57:35,616 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2020-11-28 02:57:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:35,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984408467] [2020-11-28 02:57:35,792 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:35,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901116527] [2020-11-28 02:57:35,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:35,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:57:35,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388966336] [2020-11-28 02:57:35,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:35,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:35,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:35,794 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-11-28 02:57:44,049 WARN L193 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-11-28 02:57:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:44,134 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-28 02:57:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:44,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 02:57:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:44,137 INFO L225 Difference]: With dead ends: 40 [2020-11-28 02:57:44,137 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 02:57:44,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 02:57:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-11-28 02:57:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 02:57:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-28 02:57:44,143 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2020-11-28 02:57:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:44,143 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-28 02:57:44,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-28 02:57:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:57:44,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:44,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:44,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:44,344 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:44,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2020-11-28 02:57:44,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:44,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177525473] [2020-11-28 02:57:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:44,367 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:44,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365612702] [2020-11-28 02:57:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:44,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:57:44,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:44,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177525473] [2020-11-28 02:57:44,571 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:44,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365612702] [2020-11-28 02:57:44,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:44,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:57:44,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857338479] [2020-11-28 02:57:44,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:57:44,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:44,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:57:44,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:44,573 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-11-28 02:57:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:44,686 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-11-28 02:57:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:44,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 02:57:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:44,692 INFO L225 Difference]: With dead ends: 48 [2020-11-28 02:57:44,692 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 02:57:44,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:44,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 02:57:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-11-28 02:57:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 02:57:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-11-28 02:57:44,700 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2020-11-28 02:57:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:44,701 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-11-28 02:57:44,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:57:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-11-28 02:57:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:57:44,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:44,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:44,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:44,915 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:44,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2020-11-28 02:57:44,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:44,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651831969] [2020-11-28 02:57:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:44,923 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:44,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057532655] [2020-11-28 02:57:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:45,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:57:45,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:45,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651831969] [2020-11-28 02:57:45,148 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:45,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057532655] [2020-11-28 02:57:45,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:45,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:57:45,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674858732] [2020-11-28 02:57:45,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:57:45,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:45,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:57:45,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:45,149 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2020-11-28 02:57:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:45,356 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-11-28 02:57:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:57:45,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-28 02:57:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:45,359 INFO L225 Difference]: With dead ends: 45 [2020-11-28 02:57:45,359 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 02:57:45,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:57:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 02:57:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-11-28 02:57:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:57:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-28 02:57:45,363 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2020-11-28 02:57:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:45,363 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-28 02:57:45,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:57:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-28 02:57:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:57:45,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:45,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:45,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:45,588 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:45,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2020-11-28 02:57:45,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:45,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143407720] [2020-11-28 02:57:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:45,604 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:45,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390218402] [2020-11-28 02:57:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:45,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:57:45,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:57:45,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143407720] [2020-11-28 02:57:45,785 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:45,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390218402] [2020-11-28 02:57:45,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:45,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:45,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643322979] [2020-11-28 02:57:45,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:45,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:45,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:45,787 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-11-28 02:57:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:45,845 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-11-28 02:57:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:45,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-28 02:57:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:45,847 INFO L225 Difference]: With dead ends: 35 [2020-11-28 02:57:45,847 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 02:57:45,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 02:57:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-28 02:57:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 02:57:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-28 02:57:45,850 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-11-28 02:57:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:45,851 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-28 02:57:45,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-28 02:57:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:57:45,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:45,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:46,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-28 02:57:46,069 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:46,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2020-11-28 02:57:46,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:46,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953135351] [2020-11-28 02:57:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:46,076 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:46,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356047518] [2020-11-28 02:57:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:46,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:46,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:46,193 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-28 02:57:46,193 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 [2020-11-28 02:57:46,193 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:46,198 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:46,199 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. [2020-11-28 02:57:46,199 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-11-28 02:57:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:57:46,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953135351] [2020-11-28 02:57:46,215 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:46,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356047518] [2020-11-28 02:57:46,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:46,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:46,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702325472] [2020-11-28 02:57:46,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:46,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:46,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:46,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:46,217 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2020-11-28 02:57:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:46,230 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-11-28 02:57:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:46,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 02:57:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:46,231 INFO L225 Difference]: With dead ends: 32 [2020-11-28 02:57:46,232 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 02:57:46,232 INFO L677 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 [2020-11-28 02:57:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 02:57:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-28 02:57:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 02:57:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-28 02:57:46,235 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2020-11-28 02:57:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:46,235 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-28 02:57:46,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-28 02:57:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:57:46,236 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:46,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:46,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:46,437 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:57:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:46,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2020-11-28 02:57:46,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:46,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487934528] [2020-11-28 02:57:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:46,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:46,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001653633] [2020-11-28 02:57:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:57:46,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:46,609 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:46,609 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 15 treesize of output 35 [2020-11-28 02:57:46,610 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:46,642 INFO L625 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2020-11-28 02:57:46,643 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:57:46,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2020-11-28 02:57:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:57:46,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487934528] [2020-11-28 02:57:46,740 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:46,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001653633] [2020-11-28 02:57:46,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:46,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:46,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850482098] [2020-11-28 02:57:46,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:46,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:46,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:46,741 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-11-28 02:57:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:46,838 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-11-28 02:57:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:46,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-28 02:57:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:46,839 INFO L225 Difference]: With dead ends: 31 [2020-11-28 02:57:46,839 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:46,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:46,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-28 02:57:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:46,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:46,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:46,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:47,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:47,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:47 BoogieIcfgContainer [2020-11-28 02:57:47,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:47,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:47,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:47,046 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:47,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32" (3/4) ... [2020-11-28 02:57:47,049 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:47,054 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 02:57:47,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-28 02:57:47,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-28 02:57:47,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-28 02:57:47,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-28 02:57:47,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 02:57:47,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-28 02:57:47,062 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 02:57:47,063 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 02:57:47,063 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 02:57:47,063 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:47,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a1e9f1d-d22c-414d-9857-f5f937e5eccc/bin/uautomizer/witness.graphml [2020-11-28 02:57:47,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:47,115 INFO L168 Benchmark]: Toolchain (without parser) took 15803.91 ms. Allocated memory was 90.2 MB in the beginning and 163.6 MB in the end (delta: 73.4 MB). Free memory was 60.4 MB in the beginning and 98.4 MB in the end (delta: -38.0 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:47,116 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 51.0 MB in the beginning and 50.9 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:47,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.70 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 55.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:47,116 INFO L168 Benchmark]: Boogie Preprocessor took 51.23 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 53.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:47,117 INFO L168 Benchmark]: RCFGBuilder took 699.79 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 53.3 MB in the beginning and 85.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:47,117 INFO L168 Benchmark]: TraceAbstraction took 14490.74 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 85.9 MB in the beginning and 101.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:47,118 INFO L168 Benchmark]: Witness Printer took 68.91 ms. Allocated memory is still 163.6 MB. Free memory was 101.6 MB in the beginning and 98.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:47,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 51.0 MB in the beginning and 50.9 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 483.70 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 55.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.23 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 53.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 699.79 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 53.3 MB in the beginning and 85.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14490.74 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 85.9 MB in the beginning and 101.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 68.91 ms. Allocated memory is still 163.6 MB. Free memory was 101.6 MB in the beginning and 98.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.4s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 195 SDtfs, 260 SDslu, 246 SDs, 0 SdLazy, 304 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 160 ConstructedInterpolants, 13 QuantifiedInterpolants, 21586 SizeOfPredicates, 33 NumberOfNonLiveVariables, 812 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 8/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...