./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e28603c63113c1566dc2e06da17c63059f80486 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:11,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:11,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:11,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:11,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:11,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:11,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:11,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:11,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:11,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:11,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:11,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:11,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:11,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:11,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:11,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:11,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:11,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:11,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:11,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:11,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:11,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:11,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:11,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:11,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:11,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:11,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:11,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:11,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:11,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:11,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:11,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:11,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:11,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:11,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:11,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:11,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:11,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:11,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:11,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:11,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:11,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:54:11,241 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:11,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:11,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:11,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:11,253 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:11,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:11,253 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:11,253 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:11,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:11,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:11,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:11,254 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:54:11,254 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:54:11,254 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:54:11,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:11,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:11,254 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:11,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:11,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:11,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:11,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:11,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:11,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:11,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:11,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:11,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:11,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e28603c63113c1566dc2e06da17c63059f80486 [2019-10-22 08:54:11,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:11,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:11,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:11,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:11,307 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:11,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-10-22 08:54:11,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/data/1b57500d5/e9697c3fd7ef40f6838dbaa53e0386ef/FLAG4c76bdc20 [2019-10-22 08:54:11,795 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:11,798 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-10-22 08:54:11,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/data/1b57500d5/e9697c3fd7ef40f6838dbaa53e0386ef/FLAG4c76bdc20 [2019-10-22 08:54:11,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/data/1b57500d5/e9697c3fd7ef40f6838dbaa53e0386ef [2019-10-22 08:54:11,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:11,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:54:11,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:11,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:11,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:11,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f19c8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11, skipping insertion in model container [2019-10-22 08:54:11,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,844 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:11,880 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:12,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:12,227 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:12,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:12,325 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:12,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12 WrapperNode [2019-10-22 08:54:12,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:12,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:12,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:12,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:12,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:12,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:12,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:12,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:12,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:54:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:54:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:54:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:54:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:54:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:54:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:54:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:54:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:54:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:54:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:54:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:54:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:54:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:54:12,432 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:54:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:54:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:54:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:54:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:54:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:54:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:54:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:54:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:54:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:54:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:54:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:54:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:54:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:54:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:54:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:54:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:54:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:54:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:54:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:54:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:54:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:54:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:54:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:54:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:54:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:12,997 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:12,997 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 08:54:12,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12 BoogieIcfgContainer [2019-10-22 08:54:12,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:12,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:12,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:13,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:13,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:11" (1/3) ... [2019-10-22 08:54:13,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d53fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:13, skipping insertion in model container [2019-10-22 08:54:13,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (2/3) ... [2019-10-22 08:54:13,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d53fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:13, skipping insertion in model container [2019-10-22 08:54:13,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/3) ... [2019-10-22 08:54:13,006 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2019-10-22 08:54:13,015 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:13,023 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-10-22 08:54:13,036 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-10-22 08:54:13,055 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:13,055 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:54:13,055 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:13,056 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:13,056 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:13,056 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:13,056 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:13,056 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-22 08:54:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:54:13,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,081 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,082 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,088 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-10-22 08:54:13,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708389487] [2019-10-22 08:54:13,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708389487] [2019-10-22 08:54:13,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:54:13,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97573325] [2019-10-22 08:54:13,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:13,249 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,265 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-10-22 08:54:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,400 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-10-22 08:54:13,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:13,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:54:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,410 INFO L225 Difference]: With dead ends: 36 [2019-10-22 08:54:13,410 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 08:54:13,413 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 08:54:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-22 08:54:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 08:54:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-22 08:54:13,447 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-10-22 08:54:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,447 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-22 08:54:13,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-22 08:54:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:54:13,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,448 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,449 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-10-22 08:54:13,449 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380017945] [2019-10-22 08:54:13,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380017945] [2019-10-22 08:54:13,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:13,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412274642] [2019-10-22 08:54:13,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:13,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,501 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-10-22 08:54:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,583 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-10-22 08:54:13,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:13,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-22 08:54:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,584 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:54:13,584 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:54:13,585 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:54:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:54:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:54:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-22 08:54:13,589 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-10-22 08:54:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,589 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-22 08:54:13,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-22 08:54:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:54:13,590 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,590 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,590 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-10-22 08:54:13,591 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458585875] [2019-10-22 08:54:13,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458585875] [2019-10-22 08:54:13,738 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:54:13,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453301884] [2019-10-22 08:54:13,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:54:13,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:54:13,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:54:13,739 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2019-10-22 08:54:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,842 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-22 08:54:13,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:54:13,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-22 08:54:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,844 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:54:13,844 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 08:54:13,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 08:54:13,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-10-22 08:54:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-22 08:54:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-10-22 08:54:13,848 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2019-10-22 08:54:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,849 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-10-22 08:54:13,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:54:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-10-22 08:54:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:54:13,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,850 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,850 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,851 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2019-10-22 08:54:13,851 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953817750] [2019-10-22 08:54:13,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953817750] [2019-10-22 08:54:13,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358111622] [2019-10-22 08:54:13,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:14,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:14,073 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:54:14,073 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2019-10-22 08:54:14,073 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015259501] [2019-10-22 08:54:14,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:14,074 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:14,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:14,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:14,074 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-10-22 08:54:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:14,136 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2019-10-22 08:54:14,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:14,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-22 08:54:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:14,138 INFO L225 Difference]: With dead ends: 54 [2019-10-22 08:54:14,138 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 08:54:14,138 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 08:54:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-10-22 08:54:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 08:54:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-10-22 08:54:14,143 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2019-10-22 08:54:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:14,144 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-10-22 08:54:14,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:14,144 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-10-22 08:54:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:54:14,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:14,145 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:14,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:14,347 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,348 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2019-10-22 08:54:14,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:14,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619201250] [2019-10-22 08:54:14,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:14,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619201250] [2019-10-22 08:54:14,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254951438] [2019-10-22 08:54:14,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:54:14,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:14,658 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-10-22 08:54:14,659 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:14,664 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:14,665 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:54:14,665 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-10-22 08:54:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:14,719 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:14,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-22 08:54:14,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19496453] [2019-10-22 08:54:14,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:54:14,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:14,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:54:14,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:14,720 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2019-10-22 08:54:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:14,869 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-10-22 08:54:14,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:54:14,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-10-22 08:54:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:14,871 INFO L225 Difference]: With dead ends: 39 [2019-10-22 08:54:14,871 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 08:54:14,871 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:54:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 08:54:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-10-22 08:54:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 08:54:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-22 08:54:14,878 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-10-22 08:54:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:14,879 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-22 08:54:14,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:54:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-22 08:54:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:54:14,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:14,879 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:15,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:15,080 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:15,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2019-10-22 08:54:15,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:15,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357608014] [2019-10-22 08:54:15,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:15,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357608014] [2019-10-22 08:54:15,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919722462] [2019-10-22 08:54:15,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:54:15,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:15,276 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:15,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-10-22 08:54:15,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82929277] [2019-10-22 08:54:15,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:54:15,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:15,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:54:15,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:54:15,277 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2019-10-22 08:54:15,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:15,390 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-10-22 08:54:15,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:54:15,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-10-22 08:54:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:15,391 INFO L225 Difference]: With dead ends: 50 [2019-10-22 08:54:15,392 INFO L226 Difference]: Without dead ends: 50 [2019-10-22 08:54:15,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:54:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-22 08:54:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-10-22 08:54:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 08:54:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-10-22 08:54:15,396 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2019-10-22 08:54:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:15,396 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-10-22 08:54:15,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:54:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-10-22 08:54:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:54:15,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:15,397 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:15,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:15,598 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:15,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2019-10-22 08:54:15,598 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:15,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155316907] [2019-10-22 08:54:15,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:15,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155316907] [2019-10-22 08:54:15,672 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:15,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:54:15,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329764398] [2019-10-22 08:54:15,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:15,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:15,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:15,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:15,673 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2019-10-22 08:54:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:15,744 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-10-22 08:54:15,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:54:15,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-10-22 08:54:15,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:15,745 INFO L225 Difference]: With dead ends: 44 [2019-10-22 08:54:15,745 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 08:54:15,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:54:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 08:54:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-10-22 08:54:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 08:54:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-10-22 08:54:15,749 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2019-10-22 08:54:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:15,750 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-10-22 08:54:15,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-10-22 08:54:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:54:15,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:15,751 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:15,751 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:15,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:15,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2019-10-22 08:54:15,751 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:15,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16575336] [2019-10-22 08:54:15,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:15,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16575336] [2019-10-22 08:54:15,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604111904] [2019-10-22 08:54:15,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:15,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:15,982 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:54:15,982 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2019-10-22 08:54:15,982 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892988271] [2019-10-22 08:54:15,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:15,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:15,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:15,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:54:15,984 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2019-10-22 08:54:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:16,015 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2019-10-22 08:54:16,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:16,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-22 08:54:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:16,016 INFO L225 Difference]: With dead ends: 56 [2019-10-22 08:54:16,016 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 08:54:16,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:54:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 08:54:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-10-22 08:54:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 08:54:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2019-10-22 08:54:16,021 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2019-10-22 08:54:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:16,021 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2019-10-22 08:54:16,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2019-10-22 08:54:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:54:16,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:16,023 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:16,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:16,223 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:16,224 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2019-10-22 08:54:16,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:16,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642511604] [2019-10-22 08:54:16,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:16,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:16,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:16,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642511604] [2019-10-22 08:54:16,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841866807] [2019-10-22 08:54:16,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:54:16,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:16,468 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:16,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2019-10-22 08:54:16,468 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141892548] [2019-10-22 08:54:16,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 08:54:16,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:16,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 08:54:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:54:16,469 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 14 states. [2019-10-22 08:54:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:16,881 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2019-10-22 08:54:16,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-22 08:54:16,881 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-10-22 08:54:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:16,882 INFO L225 Difference]: With dead ends: 74 [2019-10-22 08:54:16,882 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 08:54:16,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-10-22 08:54:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 08:54:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2019-10-22 08:54:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-22 08:54:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-10-22 08:54:16,887 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2019-10-22 08:54:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:16,887 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-10-22 08:54:16,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 08:54:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-10-22 08:54:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:54:16,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:16,888 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:17,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:17,089 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:54:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:17,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2019-10-22 08:54:17,089 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:17,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744036074] [2019-10-22 08:54:17,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:17,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:17,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:54:17,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744036074] [2019-10-22 08:54:17,146 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:17,146 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:54:17,146 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31677184] [2019-10-22 08:54:17,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:17,147 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:17,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:17,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:17,147 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2019-10-22 08:54:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:17,173 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-10-22 08:54:17,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:17,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 08:54:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:17,173 INFO L225 Difference]: With dead ends: 47 [2019-10-22 08:54:17,174 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:54:17,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:54:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:54:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:54:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:54:17,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-22 08:54:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:17,175 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:17,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:54:17,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:54:17,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:17 BoogieIcfgContainer [2019-10-22 08:54:17,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:17,180 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:17,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:17,181 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:17,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/4) ... [2019-10-22 08:54:17,191 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:54:17,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 08:54:17,202 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 08:54:17,203 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 08:54:17,203 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-10-22 08:54:17,203 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-10-22 08:54:17,203 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 08:54:17,203 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-10-22 08:54:17,208 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-10-22 08:54:17,208 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 08:54:17,208 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:54:17,208 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:54:17,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1db1dee3-50ac-4226-87b0-764d4c0c6d41/bin/uautomizer/witness.graphml [2019-10-22 08:54:17,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:17,263 INFO L168 Benchmark]: Toolchain (without parser) took 5436.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -219.1 MB). Peak memory consumption was 220.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:17,263 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:17,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:17,267 INFO L168 Benchmark]: Boogie Preprocessor took 52.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:17,267 INFO L168 Benchmark]: RCFGBuilder took 619.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:17,268 INFO L168 Benchmark]: TraceAbstraction took 4181.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.5 MB in the end (delta: 207.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:17,268 INFO L168 Benchmark]: Witness Printer took 80.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 848.5 MB in the beginning and 1.2 GB in the end (delta: -316.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:17,270 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 496.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 619.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4181.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.5 MB in the end (delta: 207.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 11.5 GB. * Witness Printer took 80.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 848.5 MB in the beginning and 1.2 GB in the end (delta: -316.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 9 error locations. Result: SAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 517 SDslu, 352 SDs, 0 SdLazy, 679 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 23026 SizeOfPredicates, 12 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 18/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...