./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple_built_from_end.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/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 41b5142f2d6582efd6d9a128e4dfef83faaab097 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/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 41b5142f2d6582efd6d9a128e4dfef83faaab097 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:44:10,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:44:10,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:44:10,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:44:10,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:44:10,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:44:10,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:44:10,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:44:10,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:44:10,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:44:10,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:44:10,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:44:10,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:44:10,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:44:10,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:44:10,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:44:10,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:44:10,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:44:10,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:44:10,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:44:10,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:44:10,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:44:10,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:44:10,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:44:10,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:44:10,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:44:10,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:44:10,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:44:10,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:44:10,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:44:10,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:44:10,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:44:10,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:44:10,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:44:10,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:44:10,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:44:10,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:44:10,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:44:10,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:44:10,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:44:10,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:44:10,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 16:44:10,487 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:44:10,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:44:10,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:44:10,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:44:10,488 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:44:10,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 16:44:10,489 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 16:44:10,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:44:10,490 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:44:10,490 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:44:10,490 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:44:10,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:44:10,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:44:10,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:44:10,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:44:10,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:44:10,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:44:10,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:44:10,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:44:10,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:44:10,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:44:10,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/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 -> 41b5142f2d6582efd6d9a128e4dfef83faaab097 [2019-12-07 16:44:10,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:44:10,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:44:10,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:44:10,599 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:44:10,599 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:44:10,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-12-07 16:44:10,636 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/efa09338b/e7e49df632a244eab00b3912c17c9d69/FLAGeee42075e [2019-12-07 16:44:11,104 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:44:11,105 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-12-07 16:44:11,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/efa09338b/e7e49df632a244eab00b3912c17c9d69/FLAGeee42075e [2019-12-07 16:44:11,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/efa09338b/e7e49df632a244eab00b3912c17c9d69 [2019-12-07 16:44:11,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:44:11,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 16:44:11,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:44:11,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:44:11,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:44:11,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513e5c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11, skipping insertion in model container [2019-12-07 16:44:11,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:44:11,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:44:11,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:44:11,367 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:44:11,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:44:11,433 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:44:11,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11 WrapperNode [2019-12-07 16:44:11,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:44:11,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:44:11,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:44:11,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:44:11,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... [2019-12-07 16:44:11,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:44:11,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:44:11,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:44:11,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:44:11,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:44:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 16:44:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:44:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 16:44:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 16:44:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 16:44:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 16:44:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 16:44:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-12-07 16:44:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 16:44:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-12-07 16:44:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 16:44:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 16:44:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 16:44:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 16:44:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 16:44:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 16:44:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 16:44:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 16:44:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 16:44:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 16:44:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 16:44:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 16:44:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:44:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:44:11,688 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-12-07 16:44:11,750 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:44:11,750 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 16:44:11,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:11 BoogieIcfgContainer [2019-12-07 16:44:11,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:44:11,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:44:11,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:44:11,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:44:11,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:44:11" (1/3) ... [2019-12-07 16:44:11,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b03119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:44:11, skipping insertion in model container [2019-12-07 16:44:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:11" (2/3) ... [2019-12-07 16:44:11,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b03119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:44:11, skipping insertion in model container [2019-12-07 16:44:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:11" (3/3) ... [2019-12-07 16:44:11,755 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2019-12-07 16:44:11,761 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:44:11,766 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-12-07 16:44:11,773 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-12-07 16:44:11,785 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:44:11,785 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 16:44:11,785 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:44:11,785 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:44:11,786 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:44:11,786 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:44:11,786 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:44:11,786 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:44:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-12-07 16:44:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:44:11,801 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:11,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:11,802 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash 870255052, now seen corresponding path program 1 times [2019-12-07 16:44:11,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:11,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165977107] [2019-12-07 16:44:11,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:11,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165977107] [2019-12-07 16:44:11,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:11,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:44:11,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560837951] [2019-12-07 16:44:11,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:44:11,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:11,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:44:11,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:11,926 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2019-12-07 16:44:11,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:11,992 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2019-12-07 16:44:11,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:11,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 16:44:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,000 INFO L225 Difference]: With dead ends: 49 [2019-12-07 16:44:12,000 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 16:44:12,001 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 16:44:12,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2019-12-07 16:44:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 16:44:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-12-07 16:44:12,028 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 9 [2019-12-07 16:44:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,028 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-12-07 16:44:12,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:44:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-12-07 16:44:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 16:44:12,029 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,029 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,029 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1207451266, now seen corresponding path program 1 times [2019-12-07 16:44:12,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986320682] [2019-12-07 16:44:12,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986320682] [2019-12-07 16:44:12,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:12,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:44:12,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222560562] [2019-12-07 16:44:12,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:44:12,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:12,072 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2019-12-07 16:44:12,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:12,126 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-12-07 16:44:12,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:44:12,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 16:44:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,127 INFO L225 Difference]: With dead ends: 40 [2019-12-07 16:44:12,127 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 16:44:12,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 16:44:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-12-07 16:44:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 16:44:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-12-07 16:44:12,131 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 10 [2019-12-07 16:44:12,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,131 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-12-07 16:44:12,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:44:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-12-07 16:44:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 16:44:12,131 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,132 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,132 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1207452581, now seen corresponding path program 1 times [2019-12-07 16:44:12,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755036421] [2019-12-07 16:44:12,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755036421] [2019-12-07 16:44:12,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:12,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:44:12,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527011406] [2019-12-07 16:44:12,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:44:12,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:12,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:12,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:12,171 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2019-12-07 16:44:12,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:12,212 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-12-07 16:44:12,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:44:12,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 16:44:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,213 INFO L225 Difference]: With dead ends: 29 [2019-12-07 16:44:12,213 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 16:44:12,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 16:44:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 16:44:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 16:44:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-12-07 16:44:12,216 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2019-12-07 16:44:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,216 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-12-07 16:44:12,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:44:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-12-07 16:44:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 16:44:12,217 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,217 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1207452582, now seen corresponding path program 1 times [2019-12-07 16:44:12,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675579689] [2019-12-07 16:44:12,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675579689] [2019-12-07 16:44:12,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:12,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:44:12,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566521956] [2019-12-07 16:44:12,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:44:12,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:12,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:12,270 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2019-12-07 16:44:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:12,307 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-12-07 16:44:12,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:44:12,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 16:44:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,308 INFO L225 Difference]: With dead ends: 27 [2019-12-07 16:44:12,308 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 16:44:12,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 16:44:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 16:44:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 16:44:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-12-07 16:44:12,311 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2019-12-07 16:44:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,311 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-12-07 16:44:12,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:44:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-12-07 16:44:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 16:44:12,312 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,312 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,312 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,312 INFO L82 PathProgramCache]: Analyzing trace with hash -821123348, now seen corresponding path program 1 times [2019-12-07 16:44:12,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978238081] [2019-12-07 16:44:12,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978238081] [2019-12-07 16:44:12,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:12,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:44:12,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193205540] [2019-12-07 16:44:12,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:44:12,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:12,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:44:12,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:12,355 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2019-12-07 16:44:12,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:12,410 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2019-12-07 16:44:12,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:44:12,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-07 16:44:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,411 INFO L225 Difference]: With dead ends: 35 [2019-12-07 16:44:12,411 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 16:44:12,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:44:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 16:44:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-12-07 16:44:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 16:44:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-12-07 16:44:12,414 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-12-07 16:44:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,414 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-12-07 16:44:12,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:44:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-12-07 16:44:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 16:44:12,415 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,415 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,415 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,415 INFO L82 PathProgramCache]: Analyzing trace with hash -821123347, now seen corresponding path program 1 times [2019-12-07 16:44:12,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956001176] [2019-12-07 16:44:12,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956001176] [2019-12-07 16:44:12,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:12,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:44:12,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204651224] [2019-12-07 16:44:12,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:44:12,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:12,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:44:12,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:12,472 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2019-12-07 16:44:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:12,532 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2019-12-07 16:44:12,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:44:12,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-07 16:44:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,533 INFO L225 Difference]: With dead ends: 39 [2019-12-07 16:44:12,534 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 16:44:12,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:44:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 16:44:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-12-07 16:44:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 16:44:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-12-07 16:44:12,537 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 16 [2019-12-07 16:44:12,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,537 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-12-07 16:44:12,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:44:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-12-07 16:44:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 16:44:12,537 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,538 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,538 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,538 INFO L82 PathProgramCache]: Analyzing trace with hash -821123391, now seen corresponding path program 1 times [2019-12-07 16:44:12,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043340234] [2019-12-07 16:44:12,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043340234] [2019-12-07 16:44:12,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:12,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 16:44:12,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131936728] [2019-12-07 16:44:12,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:44:12,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:12,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:44:12,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:12,574 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2019-12-07 16:44:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:12,621 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-12-07 16:44:12,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:44:12,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-07 16:44:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,622 INFO L225 Difference]: With dead ends: 37 [2019-12-07 16:44:12,622 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 16:44:12,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:44:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 16:44:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-12-07 16:44:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 16:44:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-12-07 16:44:12,625 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2019-12-07 16:44:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,625 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-12-07 16:44:12,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:44:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-12-07 16:44:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 16:44:12,626 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,626 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,626 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1174445805, now seen corresponding path program 1 times [2019-12-07 16:44:12,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530195392] [2019-12-07 16:44:12,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530195392] [2019-12-07 16:44:12,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:12,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 16:44:12,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226016750] [2019-12-07 16:44:12,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:44:12,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:12,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:44:12,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:44:12,679 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2019-12-07 16:44:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:12,743 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-12-07 16:44:12,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 16:44:12,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-12-07 16:44:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:12,744 INFO L225 Difference]: With dead ends: 34 [2019-12-07 16:44:12,744 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 16:44:12,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 16:44:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 16:44:12,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-12-07 16:44:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 16:44:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-12-07 16:44:12,747 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2019-12-07 16:44:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:12,747 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-12-07 16:44:12,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:44:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-12-07 16:44:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 16:44:12,748 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:12,748 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:12,748 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:12,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1116213141, now seen corresponding path program 1 times [2019-12-07 16:44:12,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:12,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173457878] [2019-12-07 16:44:12,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:12,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173457878] [2019-12-07 16:44:12,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227708890] [2019-12-07 16:44:12,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:44:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:12,930 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 16:44:12,936 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:12,995 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-12-07 16:44:12,996 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:13,002 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:13,005 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-12-07 16:44:13,005 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:13,010 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:13,011 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:13,011 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-12-07 16:44:13,038 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 16:44:13,038 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:13,043 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:13,045 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 16:44:13,045 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:13,048 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:13,049 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:13,049 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-12-07 16:44:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:13,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:44:13,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2019-12-07 16:44:13,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530334866] [2019-12-07 16:44:13,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 16:44:13,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 16:44:13,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:44:13,053 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2019-12-07 16:44:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:13,182 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2019-12-07 16:44:13,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 16:44:13,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2019-12-07 16:44:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:13,184 INFO L225 Difference]: With dead ends: 46 [2019-12-07 16:44:13,184 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 16:44:13,184 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-12-07 16:44:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 16:44:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2019-12-07 16:44:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 16:44:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-12-07 16:44:13,188 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2019-12-07 16:44:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:13,189 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2019-12-07 16:44:13,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 16:44:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2019-12-07 16:44:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 16:44:13,190 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:13,190 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:13,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:44:13,391 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:13,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1116213098, now seen corresponding path program 1 times [2019-12-07 16:44:13,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:13,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783244721] [2019-12-07 16:44:13,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:13,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:13,450 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:44:13,457 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-12-07 16:44:13,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:44:13 BoogieIcfgContainer [2019-12-07 16:44:13,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:44:13,467 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:44:13,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:44:13,467 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:44:13,468 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:11" (3/4) ... [2019-12-07 16:44:13,470 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:44:13,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:44:13,471 INFO L168 Benchmark]: Toolchain (without parser) took 2346.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 946.2 MB in the beginning and 749.6 MB in the end (delta: 196.6 MB). Peak memory consumption was 287.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:13,471 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:44:13,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:13,472 INFO L168 Benchmark]: Boogie Preprocessor took 35.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:13,472 INFO L168 Benchmark]: RCFGBuilder took 281.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:13,473 INFO L168 Benchmark]: TraceAbstraction took 1715.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 749.6 MB in the end (delta: 257.9 MB). Peak memory consumption was 257.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:13,473 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.1 GB. Free memory is still 749.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:44:13,475 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 281.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1715.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 749.6 MB in the end (delta: 257.9 MB). Peak memory consumption was 257.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.1 GB. Free memory is still 749.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List t; [L522] List p = 0; VAL [p={0:0}] [L523] COND TRUE __VERIFIER_nondet_int() [L524] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L525] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L526] t->h = 1 VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L527] t->n = p VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L528] p = t VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L523] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L531] EXPR p->h VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L531] COND FALSE !(p->h != 1) [L534] EXPR p->n VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}, t={-1:0}] [L534] p = p->n [L530] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 10 error locations. Result: UNSAFE, OverallTime: 1.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 171 SDtfs, 228 SDslu, 166 SDs, 0 SdLazy, 500 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=9, 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, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 13383 SizeOfPredicates, 11 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 10/16 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 16:44:14,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:44:14,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:44:14,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-12-07 16:44:14,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:44:14,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:44:14,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:44:14,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:44:14,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:44:14,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:44:14,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:44:14,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:44:14,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:44:14,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:44:14,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:44:14,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:44:14,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:44:14,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:44:14,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:44:14,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:44:14,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:44:14,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:44:14,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:44:14,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:44:14,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:44:14,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:44:14,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:44:14,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:44:14,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:44:14,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:44:14,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:44:14,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:44:14,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:44:14,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-12-07 16:44:14,919 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:44:14,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:44:14,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:44:14,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:44:14,920 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:44:14,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:44:14,920 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:44:14,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:44:14,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:44:14,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 16:44:14,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 16:44:14,922 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:44:14,922 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:44:14,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:44:14,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:44:14,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:44:14,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:44:14,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:44:14,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:44:14,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:44:14,923 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 16:44:14,923 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 16:44:14,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:44:14,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:44:14,924 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/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 -> 41b5142f2d6582efd6d9a128e4dfef83faaab097 [2019-12-07 16:44:15,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:44:15,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:44:15,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:44:15,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:44:15,097 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:44:15,097 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-12-07 16:44:15,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/db419685e/1636c3f4848b4d21a8f59250eba6c0b3/FLAGd110561f0 [2019-12-07 16:44:15,532 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:44:15,533 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-12-07 16:44:15,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/db419685e/1636c3f4848b4d21a8f59250eba6c0b3/FLAGd110561f0 [2019-12-07 16:44:15,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/data/db419685e/1636c3f4848b4d21a8f59250eba6c0b3 [2019-12-07 16:44:15,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:44:15,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 16:44:15,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:44:15,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:44:15,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:44:15,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b62f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15, skipping insertion in model container [2019-12-07 16:44:15,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:44:15,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:44:15,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:44:15,797 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:44:15,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:44:15,858 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:44:15,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15 WrapperNode [2019-12-07 16:44:15,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:44:15,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:44:15,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:44:15,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:44:15,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... [2019-12-07 16:44:15,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:44:15,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:44:15,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:44:15,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:44:15,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:44:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 16:44:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:44:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-12-07 16:44:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 16:44:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 16:44:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 16:44:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 16:44:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 16:44:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-12-07 16:44:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 16:44:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-12-07 16:44:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 16:44:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 16:44:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 16:44:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 16:44:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 16:44:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 16:44:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 16:44:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 16:44:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 16:44:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 16:44:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 16:44:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:44:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-12-07 16:44:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:44:16,138 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-12-07 16:44:16,229 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:44:16,229 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 16:44:16,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:16 BoogieIcfgContainer [2019-12-07 16:44:16,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:44:16,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:44:16,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:44:16,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:44:16,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:44:15" (1/3) ... [2019-12-07 16:44:16,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ee93a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:44:16, skipping insertion in model container [2019-12-07 16:44:16,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:15" (2/3) ... [2019-12-07 16:44:16,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ee93a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:44:16, skipping insertion in model container [2019-12-07 16:44:16,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:16" (3/3) ... [2019-12-07 16:44:16,235 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2019-12-07 16:44:16,241 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:44:16,245 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-12-07 16:44:16,253 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-12-07 16:44:16,265 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:44:16,265 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 16:44:16,265 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:44:16,265 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:44:16,265 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:44:16,265 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:44:16,265 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:44:16,265 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:44:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-12-07 16:44:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:44:16,280 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:16,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:16,281 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:16,284 INFO L82 PathProgramCache]: Analyzing trace with hash -72951773, now seen corresponding path program 1 times [2019-12-07 16:44:16,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:16,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501289110] [2019-12-07 16:44:16,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:16,373 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:16,377 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:16,401 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:16,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501289110] [2019-12-07 16:44:16,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:16,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 16:44:16,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890780255] [2019-12-07 16:44:16,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:44:16,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:16,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:44:16,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:16,429 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2019-12-07 16:44:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:16,499 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-12-07 16:44:16,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:16,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 16:44:16,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:16,509 INFO L225 Difference]: With dead ends: 47 [2019-12-07 16:44:16,509 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 16:44:16,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 16:44:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2019-12-07 16:44:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 16:44:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-12-07 16:44:16,545 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 9 [2019-12-07 16:44:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:16,545 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-12-07 16:44:16,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:44:16,545 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-12-07 16:44:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:44:16,546 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:16,546 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:16,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 16:44:16,747 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:16,748 INFO L82 PathProgramCache]: Analyzing trace with hash -72951730, now seen corresponding path program 1 times [2019-12-07 16:44:16,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:16,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102016969] [2019-12-07 16:44:16,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:16,861 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 16:44:16,862 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:16,875 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:16,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102016969] [2019-12-07 16:44:16,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:16,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:44:16,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143611696] [2019-12-07 16:44:16,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:44:16,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:44:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:16,882 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 3 states. [2019-12-07 16:44:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:16,917 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-12-07 16:44:16,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:16,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 16:44:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:16,918 INFO L225 Difference]: With dead ends: 38 [2019-12-07 16:44:16,918 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 16:44:16,919 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 16:44:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2019-12-07 16:44:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 16:44:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-12-07 16:44:16,923 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2019-12-07 16:44:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:16,924 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-12-07 16:44:16,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:44:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-12-07 16:44:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:44:16,924 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:16,924 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:17,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 16:44:17,125 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash -72950415, now seen corresponding path program 1 times [2019-12-07 16:44:17,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:17,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038544389] [2019-12-07 16:44:17,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:17,227 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 16:44:17,228 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:17,257 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 16:44:17,257 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:17,259 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:17,260 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:17,260 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 16:44:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:17,264 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:17,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038544389] [2019-12-07 16:44:17,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:17,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 16:44:17,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532236925] [2019-12-07 16:44:17,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:44:17,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:44:17,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:17,272 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2019-12-07 16:44:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:17,314 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-12-07 16:44:17,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:17,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 16:44:17,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:17,315 INFO L225 Difference]: With dead ends: 27 [2019-12-07 16:44:17,315 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 16:44:17,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 16:44:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 16:44:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 16:44:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-12-07 16:44:17,318 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2019-12-07 16:44:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:17,318 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-12-07 16:44:17,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:44:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-12-07 16:44:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:44:17,319 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:17,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:17,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 16:44:17,520 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:17,521 INFO L82 PathProgramCache]: Analyzing trace with hash -72950414, now seen corresponding path program 1 times [2019-12-07 16:44:17,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:17,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62399789] [2019-12-07 16:44:17,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:17,628 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 16:44:17,628 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:17,636 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 16:44:17,636 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:17,641 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:17,641 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:17,641 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 16:44:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:17,649 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:17,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62399789] [2019-12-07 16:44:17,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:17,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-12-07 16:44:17,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775157905] [2019-12-07 16:44:17,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:44:17,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:17,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:17,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:17,692 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2019-12-07 16:44:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:17,727 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-12-07 16:44:17,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:17,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 16:44:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:17,729 INFO L225 Difference]: With dead ends: 25 [2019-12-07 16:44:17,729 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 16:44:17,730 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 16:44:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 16:44:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 16:44:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-12-07 16:44:17,733 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 9 [2019-12-07 16:44:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:17,734 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-12-07 16:44:17,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:44:17,734 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-12-07 16:44:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 16:44:17,734 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:17,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:17,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 16:44:17,935 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:17,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445870, now seen corresponding path program 1 times [2019-12-07 16:44:17,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:17,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936531725] [2019-12-07 16:44:17,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:18,025 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:18,026 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:18,036 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:18,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936531725] [2019-12-07 16:44:18,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:18,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 16:44:18,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442526880] [2019-12-07 16:44:18,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:44:18,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:18,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:18,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:18,043 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2019-12-07 16:44:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:18,112 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-12-07 16:44:18,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:44:18,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 16:44:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:18,114 INFO L225 Difference]: With dead ends: 40 [2019-12-07 16:44:18,114 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 16:44:18,114 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 16:44:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2019-12-07 16:44:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 16:44:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-12-07 16:44:18,117 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2019-12-07 16:44:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:18,117 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-12-07 16:44:18,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:44:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-12-07 16:44:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 16:44:18,118 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:18,118 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:18,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 16:44:18,319 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:18,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:18,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445913, now seen corresponding path program 1 times [2019-12-07 16:44:18,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:18,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276822929] [2019-12-07 16:44:18,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:18,412 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:18,413 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:18,417 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 16:44:18,418 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:18,419 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:18,419 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:18,419 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 16:44:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:18,427 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:18,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276822929] [2019-12-07 16:44:18,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:18,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:44:18,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894539477] [2019-12-07 16:44:18,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:44:18,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:18,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:18,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:18,436 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2019-12-07 16:44:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:18,512 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-12-07 16:44:18,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:44:18,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 16:44:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:18,513 INFO L225 Difference]: With dead ends: 31 [2019-12-07 16:44:18,513 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 16:44:18,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 16:44:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-12-07 16:44:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 16:44:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-12-07 16:44:18,516 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2019-12-07 16:44:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:18,516 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-12-07 16:44:18,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:44:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-12-07 16:44:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 16:44:18,516 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:18,516 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:18,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 16:44:18,717 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:18,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445914, now seen corresponding path program 1 times [2019-12-07 16:44:18,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:18,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537283045] [2019-12-07 16:44:18,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:18,808 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 16:44:18,809 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:18,813 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 16:44:18,814 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:18,818 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:18,818 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:18,818 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 16:44:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:18,832 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:18,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537283045] [2019-12-07 16:44:18,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:18,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 16:44:18,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891399945] [2019-12-07 16:44:18,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:44:18,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:18,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:44:18,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:44:18,901 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2019-12-07 16:44:19,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:19,020 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2019-12-07 16:44:19,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:44:19,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-12-07 16:44:19,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:19,021 INFO L225 Difference]: With dead ends: 35 [2019-12-07 16:44:19,021 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 16:44:19,021 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 16:44:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 16:44:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-12-07 16:44:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 16:44:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-12-07 16:44:19,023 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 14 [2019-12-07 16:44:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:19,024 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-12-07 16:44:19,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:44:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-12-07 16:44:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 16:44:19,024 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:19,024 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:19,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 16:44:19,225 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:19,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1455045754, now seen corresponding path program 1 times [2019-12-07 16:44:19,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:19,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353154722] [2019-12-07 16:44:19,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:19,321 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 16:44:19,322 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:19,326 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-12-07 16:44:19,326 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:19,327 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:19,327 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:19,328 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-12-07 16:44:19,344 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-12-07 16:44:19,344 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2019-12-07 16:44:19,345 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:19,346 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:19,346 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:19,346 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2019-12-07 16:44:19,358 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 16:44:19,358 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:19,359 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:19,360 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:19,360 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2019-12-07 16:44:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:19,367 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:19,375 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 16:44:19,378 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:19,378 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 16:44:19,378 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:14 [2019-12-07 16:44:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:19,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353154722] [2019-12-07 16:44:19,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:19,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 16:44:19,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047657308] [2019-12-07 16:44:19,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:44:19,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:44:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:44:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:19,386 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2019-12-07 16:44:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:19,490 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-12-07 16:44:19,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 16:44:19,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-07 16:44:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:44:19,491 INFO L225 Difference]: With dead ends: 32 [2019-12-07 16:44:19,491 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 16:44:19,492 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:44:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 16:44:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2019-12-07 16:44:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 16:44:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-12-07 16:44:19,494 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2019-12-07 16:44:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:44:19,494 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-12-07 16:44:19,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:44:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-12-07 16:44:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 16:44:19,495 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:44:19,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:19,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 16:44:19,696 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-12-07 16:44:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:19,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1832010702, now seen corresponding path program 1 times [2019-12-07 16:44:19,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:44:19,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652963323] [2019-12-07 16:44:19,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca68bfc-ce71-4e41-bed8-1936552a80a1/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 16:44:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:19,833 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 16:44:19,833 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:44:20,034 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 16:44:20,049 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-12-07 16:44:20,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:44:20 BoogieIcfgContainer [2019-12-07 16:44:20,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:44:20,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:44:20,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:44:20,067 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:44:20,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:16" (3/4) ... [2019-12-07 16:44:20,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:44:20,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:44:20,072 INFO L168 Benchmark]: Toolchain (without parser) took 4518.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -133.1 MB). Peak memory consumption was 78.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:20,073 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:44:20,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:20,074 INFO L168 Benchmark]: Boogie Preprocessor took 41.61 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:20,075 INFO L168 Benchmark]: RCFGBuilder took 328.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:20,075 INFO L168 Benchmark]: TraceAbstraction took 3835.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -19.1 MB). Peak memory consumption was 57.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:20,075 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:44:20,078 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 304.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.61 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 328.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3835.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -19.1 MB). Peak memory consumption was 57.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List t; [L522] List p = 0; VAL [p={0:0}] [L523] COND TRUE __VERIFIER_nondet_int() [L524] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L525] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L526] t->h = 1 VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L527] t->n = p VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L528] p = t VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L523] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L531] EXPR p->h VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1, t={1:0}] [L531] COND FALSE !(p->h != 1) [L534] EXPR p->n VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}, t={1:0}] [L534] p = p->n [L530] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 56 locations, 10 error locations. Result: UNSAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 153 SDtfs, 190 SDslu, 124 SDs, 0 SdLazy, 177 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 7188 SizeOfPredicates, 22 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 8/8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...