./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/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 a16cd99b349cc6bdff463f25bc1978dcd091a75b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/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 a16cd99b349cc6bdff463f25bc1978dcd091a75b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 10:02:30,678 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:02:30,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:02:30,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:02:30,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:02:30,686 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:02:30,687 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:02:30,688 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:02:30,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:02:30,689 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:02:30,690 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:02:30,690 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:02:30,691 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:02:30,691 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:02:30,692 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:02:30,692 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:02:30,693 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:02:30,693 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:02:30,694 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:02:30,695 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:02:30,695 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:02:30,696 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:02:30,697 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:02:30,697 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:02:30,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:02:30,697 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:02:30,698 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:02:30,698 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:02:30,698 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:02:30,699 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:02:30,699 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:02:30,699 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:02:30,699 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:02:30,700 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:02:30,700 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:02:30,700 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:02:30,700 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-08 10:02:30,707 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:02:30,707 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:02:30,708 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 10:02:30,708 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 10:02:30,709 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:02:30,709 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:02:30,709 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:02:30,709 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:02:30,709 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 10:02:30,709 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 10:02:30,710 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 10:02:30,710 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 10:02:30,710 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:02:30,710 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 10:02:30,710 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 10:02:30,710 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 10:02:30,711 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 10:02:30,711 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 10:02:30,711 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:02:30,711 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:02:30,711 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:02:30,711 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 10:02:30,711 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 10:02:30,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:02:30,712 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:02:30,712 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 10:02:30,712 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 10:02:30,712 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 10:02:30,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/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 -> a16cd99b349cc6bdff463f25bc1978dcd091a75b [2018-12-08 10:02:30,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:02:30,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:02:30,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:02:30,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:02:30,743 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:02:30,744 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-08 10:02:30,775 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/377b7a04d/9b6291b859734ea0a87ce23f598c9201/FLAGe397288a1 [2018-12-08 10:02:31,207 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:02:31,207 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-08 10:02:31,214 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/377b7a04d/9b6291b859734ea0a87ce23f598c9201/FLAGe397288a1 [2018-12-08 10:02:31,223 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/377b7a04d/9b6291b859734ea0a87ce23f598c9201 [2018-12-08 10:02:31,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:02:31,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-08 10:02:31,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:31,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:02:31,228 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:02:31,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3ff299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31, skipping insertion in model container [2018-12-08 10:02:31,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:02:31,259 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:02:31,419 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:31,426 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:02:31,477 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:31,507 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:02:31,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31 WrapperNode [2018-12-08 10:02:31,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:31,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:02:31,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:02:31,508 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:02:31,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... [2018-12-08 10:02:31,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:02:31,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:02:31,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:02:31,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:02:31,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/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 [2018-12-08 10:02:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 10:02:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:02:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-08 10:02:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-08 10:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-08 10:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-08 10:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-08 10:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-08 10:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-08 10:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-08 10:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-08 10:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-08 10:02:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-08 10:02:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 10:02:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:02:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 10:02:31,804 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:02:31,804 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 10:02:31,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:31 BoogieIcfgContainer [2018-12-08 10:02:31,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:02:31,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 10:02:31,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 10:02:31,807 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 10:02:31,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:02:31" (1/3) ... [2018-12-08 10:02:31,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e756386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:02:31, skipping insertion in model container [2018-12-08 10:02:31,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:31" (2/3) ... [2018-12-08 10:02:31,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e756386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:02:31, skipping insertion in model container [2018-12-08 10:02:31,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:31" (3/3) ... [2018-12-08 10:02:31,809 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-08 10:02:31,814 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 10:02:31,819 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-08 10:02:31,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-08 10:02:31,843 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:02:31,843 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 10:02:31,844 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 10:02:31,844 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 10:02:31,844 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:02:31,844 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:02:31,844 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 10:02:31,844 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:02:31,844 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 10:02:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-12-08 10:02:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 10:02:31,857 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:31,857 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:31,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:31,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash 350138613, now seen corresponding path program 1 times [2018-12-08 10:02:31,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:31,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:31,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:31,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:31,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:31,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:31,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:31,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 10:02:31,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 10:02:31,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:02:31,941 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-12-08 10:02:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:31,950 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-12-08 10:02:31,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 10:02:31,951 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-12-08 10:02:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:31,956 INFO L225 Difference]: With dead ends: 34 [2018-12-08 10:02:31,956 INFO L226 Difference]: Without dead ends: 27 [2018-12-08 10:02:31,957 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:02:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-08 10:02:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-08 10:02:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-08 10:02:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-12-08 10:02:31,977 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2018-12-08 10:02:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:31,977 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-12-08 10:02:31,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 10:02:31,978 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-12-08 10:02:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 10:02:31,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:31,978 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:31,978 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:31,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:31,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253782, now seen corresponding path program 1 times [2018-12-08 10:02:31,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:31,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:31,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:31,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:31,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:32,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:32,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:32,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:32,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,010 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 3 states. [2018-12-08 10:02:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,038 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-12-08 10:02:32,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:32,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 10:02:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,039 INFO L225 Difference]: With dead ends: 38 [2018-12-08 10:02:32,039 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 10:02:32,040 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 10:02:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2018-12-08 10:02:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-08 10:02:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-08 10:02:32,042 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-12-08 10:02:32,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,043 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-08 10:02:32,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-08 10:02:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 10:02:32,043 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,043 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,043 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:32,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253781, now seen corresponding path program 1 times [2018-12-08 10:02:32,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:32,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:32,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:32,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:32,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:32,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,086 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states. [2018-12-08 10:02:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,108 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-12-08 10:02:32,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:32,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 10:02:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,108 INFO L225 Difference]: With dead ends: 36 [2018-12-08 10:02:32,108 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 10:02:32,109 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 10:02:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2018-12-08 10:02:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-08 10:02:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-08 10:02:32,110 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2018-12-08 10:02:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,111 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-08 10:02:32,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-08 10:02:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 10:02:32,111 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,111 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,111 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:32,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255141, now seen corresponding path program 1 times [2018-12-08 10:02:32,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:32,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:32,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:32,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:32,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:32,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,123 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2018-12-08 10:02:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,138 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-12-08 10:02:32,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:32,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 10:02:32,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,139 INFO L225 Difference]: With dead ends: 35 [2018-12-08 10:02:32,139 INFO L226 Difference]: Without dead ends: 34 [2018-12-08 10:02:32,140 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-08 10:02:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-12-08 10:02:32,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 10:02:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2018-12-08 10:02:32,142 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 10 [2018-12-08 10:02:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,142 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2018-12-08 10:02:32,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2018-12-08 10:02:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 10:02:32,143 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,143 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,143 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:32,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255097, now seen corresponding path program 1 times [2018-12-08 10:02:32,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:32,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:32,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:32,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:32,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:32,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,156 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2018-12-08 10:02:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,170 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-08 10:02:32,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:32,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 10:02:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,171 INFO L225 Difference]: With dead ends: 30 [2018-12-08 10:02:32,171 INFO L226 Difference]: Without dead ends: 29 [2018-12-08 10:02:32,171 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-08 10:02:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-12-08 10:02:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-08 10:02:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-08 10:02:32,173 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-12-08 10:02:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,173 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-08 10:02:32,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-08 10:02:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 10:02:32,173 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,173 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,173 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:32,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486843, now seen corresponding path program 1 times [2018-12-08 10:02:32,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:32,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:32,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:02:32,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:32,195 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2018-12-08 10:02:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,228 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-12-08 10:02:32,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:02:32,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-08 10:02:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,229 INFO L225 Difference]: With dead ends: 38 [2018-12-08 10:02:32,229 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 10:02:32,229 INFO L631 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 [2018-12-08 10:02:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 10:02:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-12-08 10:02:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 10:02:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-08 10:02:32,232 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2018-12-08 10:02:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,232 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-08 10:02:32,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-08 10:02:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 10:02:32,233 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,233 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,233 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:32,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486799, now seen corresponding path program 1 times [2018-12-08 10:02:32,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:32,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:32,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:32,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:32,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:32,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:32,262 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2018-12-08 10:02:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,292 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-12-08 10:02:32,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:02:32,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-08 10:02:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,292 INFO L225 Difference]: With dead ends: 31 [2018-12-08 10:02:32,293 INFO L226 Difference]: Without dead ends: 31 [2018-12-08 10:02:32,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:02:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-08 10:02:32,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-12-08 10:02:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 10:02:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-12-08 10:02:32,295 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-12-08 10:02:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,295 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-12-08 10:02:32,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-12-08 10:02:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 10:02:32,296 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,296 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,296 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:32,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486798, now seen corresponding path program 1 times [2018-12-08 10:02:32,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:32,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:32,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:32,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:32,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:32,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:32,335 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2018-12-08 10:02:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,371 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-08 10:02:32,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:02:32,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-08 10:02:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,372 INFO L225 Difference]: With dead ends: 33 [2018-12-08 10:02:32,372 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 10:02:32,372 INFO L631 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 [2018-12-08 10:02:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 10:02:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-12-08 10:02:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-08 10:02:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-12-08 10:02:32,374 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2018-12-08 10:02:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,374 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-12-08 10:02:32,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-12-08 10:02:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 10:02:32,375 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,375 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,375 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 10:02:32,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1315071203, now seen corresponding path program 1 times [2018-12-08 10:02:32,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:32,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:32,402 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 10:02:32,410 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-08 10:02:32,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 10:02:32 BoogieIcfgContainer [2018-12-08 10:02:32,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 10:02:32,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 10:02:32,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 10:02:32,418 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 10:02:32,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:31" (3/4) ... [2018-12-08 10:02:32,421 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 10:02:32,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 10:02:32,421 INFO L168 Benchmark]: Toolchain (without parser) took 1196.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 951.7 MB in the beginning and 947.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 106.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:32,422 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:32,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:32,423 INFO L168 Benchmark]: Boogie Preprocessor took 30.80 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:32,423 INFO L168 Benchmark]: RCFGBuilder took 265.12 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: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:32,424 INFO L168 Benchmark]: TraceAbstraction took 613.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 950.5 MB in the end (delta: 97.7 MB). Peak memory consumption was 97.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:32,424 INFO L168 Benchmark]: Witness Printer took 2.87 ms. Allocated memory is still 1.1 GB. Free memory was 950.5 MB in the beginning and 947.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:32,426 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.80 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 265.12 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: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 613.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 950.5 MB in the end (delta: 97.7 MB). Peak memory consumption was 97.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.87 ms. Allocated memory is still 1.1 GB. Free memory was 950.5 MB in the beginning and 947.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List t; [L628] List p = 0; VAL [p={0:0}] [L629] COND TRUE __VERIFIER_nondet_int() [L630] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L631] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L632] t->h = 1 VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L633] t->n = p VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L634] p = t VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, t={14:0}] [L629] COND FALSE !(__VERIFIER_nondet_int()) [L636] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, t={14:0}] [L637] EXPR p->h VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, p->h=1, t={14:0}] [L637] COND FALSE !(p->h != 1) [L640] EXPR p->n VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, p->n={0:0}, t={14:0}] [L640] p = p->n [L636] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 9 error locations. UNSAFE Result, 0.5s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 177 SDtfs, 132 SDslu, 88 SDs, 0 SdLazy, 146 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 3166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-635dfa2 [2018-12-08 10:02:33,728 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:02:33,729 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:02:33,735 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:02:33,735 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:02:33,735 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:02:33,736 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:02:33,737 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:02:33,738 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:02:33,738 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:02:33,738 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:02:33,739 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:02:33,739 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:02:33,739 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:02:33,740 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:02:33,740 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:02:33,741 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:02:33,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:02:33,743 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:02:33,743 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:02:33,744 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:02:33,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:02:33,746 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:02:33,746 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:02:33,746 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:02:33,746 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:02:33,747 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:02:33,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:02:33,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:02:33,748 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:02:33,748 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:02:33,749 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:02:33,749 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:02:33,749 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:02:33,749 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:02:33,750 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:02:33,750 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-12-08 10:02:33,757 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:02:33,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:02:33,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 10:02:33,758 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 10:02:33,758 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:02:33,758 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:02:33,758 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:02:33,758 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:02:33,758 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 10:02:33,759 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:02:33,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:02:33,760 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 10:02:33,760 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 10:02:33,761 INFO L133 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/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/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 -> a16cd99b349cc6bdff463f25bc1978dcd091a75b [2018-12-08 10:02:33,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:02:33,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:02:33,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:02:33,788 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:02:33,788 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:02:33,789 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-08 10:02:33,825 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/6f582f7fd/4f65f8d0a94248679d041e9d9787b04a/FLAG4105990e3 [2018-12-08 10:02:34,238 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:02:34,238 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-08 10:02:34,246 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/6f582f7fd/4f65f8d0a94248679d041e9d9787b04a/FLAG4105990e3 [2018-12-08 10:02:34,256 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/data/6f582f7fd/4f65f8d0a94248679d041e9d9787b04a [2018-12-08 10:02:34,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:02:34,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-08 10:02:34,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:34,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:02:34,263 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:02:34,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe97d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34, skipping insertion in model container [2018-12-08 10:02:34,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:02:34,297 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:02:34,456 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:34,464 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:02:34,489 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:34,547 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:02:34,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34 WrapperNode [2018-12-08 10:02:34,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:34,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:02:34,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:02:34,548 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:02:34,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... [2018-12-08 10:02:34,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:02:34,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:02:34,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:02:34,578 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:02:34,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/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 [2018-12-08 10:02:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 10:02:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:02:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-08 10:02:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 10:02:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-08 10:02:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-08 10:02:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-08 10:02:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-08 10:02:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-08 10:02:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-08 10:02:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-08 10:02:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-08 10:02:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-08 10:02:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:02:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 10:02:34,838 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:02:34,839 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 10:02:34,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:34 BoogieIcfgContainer [2018-12-08 10:02:34,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:02:34,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 10:02:34,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 10:02:34,841 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 10:02:34,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:02:34" (1/3) ... [2018-12-08 10:02:34,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b8f45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:02:34, skipping insertion in model container [2018-12-08 10:02:34,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:34" (2/3) ... [2018-12-08 10:02:34,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b8f45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:02:34, skipping insertion in model container [2018-12-08 10:02:34,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:34" (3/3) ... [2018-12-08 10:02:34,843 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-08 10:02:34,848 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 10:02:34,853 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-08 10:02:34,861 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-08 10:02:34,875 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:02:34,876 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 10:02:34,876 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 10:02:34,876 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 10:02:34,876 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:02:34,876 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:02:34,876 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 10:02:34,876 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:02:34,876 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 10:02:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-08 10:02:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 10:02:34,889 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:34,889 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:34,890 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:34,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2128039411, now seen corresponding path program 1 times [2018-12-08 10:02:34,896 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:34,896 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:34,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:34,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:34,945 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:34,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:34,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:34,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 10:02:34,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 10:02:34,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:02:34,959 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-12-08 10:02:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:34,969 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-12-08 10:02:34,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 10:02:34,969 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-12-08 10:02:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:34,974 INFO L225 Difference]: With dead ends: 33 [2018-12-08 10:02:34,974 INFO L226 Difference]: Without dead ends: 26 [2018-12-08 10:02:34,975 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:02:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-08 10:02:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-08 10:02:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 10:02:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-08 10:02:34,994 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 9 [2018-12-08 10:02:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:34,995 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-08 10:02:34,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 10:02:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-08 10:02:34,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 10:02:34,995 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:34,995 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:34,995 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:34,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:34,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2128023472, now seen corresponding path program 1 times [2018-12-08 10:02:34,996 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:34,996 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:35,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:35,043 INFO L478 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 [2018-12-08 10:02:35,044 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,048 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,048 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-08 10:02:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:35,054 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:35,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:35,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:35,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:35,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:35,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,056 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 3 states. [2018-12-08 10:02:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,113 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-12-08 10:02:35,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:35,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-08 10:02:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,114 INFO L225 Difference]: With dead ends: 36 [2018-12-08 10:02:35,115 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 10:02:35,115 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 10:02:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2018-12-08 10:02:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 10:02:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-08 10:02:35,119 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2018-12-08 10:02:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,119 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-08 10:02:35,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-08 10:02:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 10:02:35,120 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:35,120 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:35,120 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:35,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2128023473, now seen corresponding path program 1 times [2018-12-08 10:02:35,121 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:35,121 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:35,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:35,167 INFO L478 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 [2018-12-08 10:02:35,167 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,171 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,171 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-08 10:02:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:35,177 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:35,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:35,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:35,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:35,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:35,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,179 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-12-08 10:02:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,220 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-12-08 10:02:35,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:35,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-08 10:02:35,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,221 INFO L225 Difference]: With dead ends: 34 [2018-12-08 10:02:35,221 INFO L226 Difference]: Without dead ends: 34 [2018-12-08 10:02:35,221 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-08 10:02:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2018-12-08 10:02:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-08 10:02:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-08 10:02:35,223 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2018-12-08 10:02:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,224 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-08 10:02:35,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-08 10:02:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 10:02:35,224 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:35,224 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:35,224 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:35,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:35,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2128022113, now seen corresponding path program 1 times [2018-12-08 10:02:35,225 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:35,225 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:35,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:35,251 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:35,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:35,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:35,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:35,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:35,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,253 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-12-08 10:02:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,293 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-12-08 10:02:35,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:35,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-08 10:02:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,294 INFO L225 Difference]: With dead ends: 33 [2018-12-08 10:02:35,294 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 10:02:35,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 10:02:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-12-08 10:02:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-08 10:02:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-12-08 10:02:35,296 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 9 [2018-12-08 10:02:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,296 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-12-08 10:02:35,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2018-12-08 10:02:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 10:02:35,297 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:35,297 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:35,297 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:35,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:35,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2128022157, now seen corresponding path program 1 times [2018-12-08 10:02:35,297 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:35,298 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:35,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:35,325 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:35,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:35,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:35,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:02:35,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:02:35,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,327 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 3 states. [2018-12-08 10:02:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,368 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-12-08 10:02:35,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:02:35,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-08 10:02:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,369 INFO L225 Difference]: With dead ends: 28 [2018-12-08 10:02:35,369 INFO L226 Difference]: Without dead ends: 27 [2018-12-08 10:02:35,370 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:02:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-08 10:02:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-12-08 10:02:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-08 10:02:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-08 10:02:35,371 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2018-12-08 10:02:35,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,372 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-08 10:02:35,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:02:35,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-08 10:02:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 10:02:35,372 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:35,372 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:35,372 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:35,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash -194724622, now seen corresponding path program 1 times [2018-12-08 10:02:35,373 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:35,373 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:35,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:35,423 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:35,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:35,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:02:35,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:35,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:35,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:35,425 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2018-12-08 10:02:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,496 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-12-08 10:02:35,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:02:35,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-08 10:02:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,497 INFO L225 Difference]: With dead ends: 36 [2018-12-08 10:02:35,497 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 10:02:35,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:02:35,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 10:02:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2018-12-08 10:02:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 10:02:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-08 10:02:35,500 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2018-12-08 10:02:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,500 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-08 10:02:35,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-08 10:02:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 10:02:35,501 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:35,501 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:35,501 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:35,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:35,501 INFO L82 PathProgramCache]: Analyzing trace with hash -194724578, now seen corresponding path program 1 times [2018-12-08 10:02:35,502 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:35,502 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:35,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:35,544 INFO L478 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 [2018-12-08 10:02:35,544 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,546 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,546 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-08 10:02:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:35,554 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:35,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:35,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:35,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:35,555 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 4 states. [2018-12-08 10:02:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,642 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-12-08 10:02:35,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:02:35,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-08 10:02:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,644 INFO L225 Difference]: With dead ends: 29 [2018-12-08 10:02:35,644 INFO L226 Difference]: Without dead ends: 29 [2018-12-08 10:02:35,644 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:02:35,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-08 10:02:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2018-12-08 10:02:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 10:02:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-12-08 10:02:35,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2018-12-08 10:02:35,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,646 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-12-08 10:02:35,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-12-08 10:02:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 10:02:35,647 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:35,647 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:35,647 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:35,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:35,648 INFO L82 PathProgramCache]: Analyzing trace with hash -194724577, now seen corresponding path program 1 times [2018-12-08 10:02:35,648 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:35,648 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:35,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:35,694 INFO L478 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 [2018-12-08 10:02:35,694 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,698 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 10:02:35,698 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-08 10:02:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:35,712 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:02:35,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:35,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:35,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:35,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:35,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:35,714 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2018-12-08 10:02:35,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,796 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-12-08 10:02:35,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:02:35,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-08 10:02:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,797 INFO L225 Difference]: With dead ends: 31 [2018-12-08 10:02:35,797 INFO L226 Difference]: Without dead ends: 31 [2018-12-08 10:02:35,797 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:02:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-08 10:02:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-12-08 10:02:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 10:02:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-08 10:02:35,799 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2018-12-08 10:02:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,799 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-08 10:02:35,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-08 10:02:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 10:02:35,800 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:35,800 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:35,800 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION]=== [2018-12-08 10:02:35,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:35,800 INFO L82 PathProgramCache]: Analyzing trace with hash -496137585, now seen corresponding path program 1 times [2018-12-08 10:02:35,800 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:02:35,800 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f27f9ecd-a3c6-451e-bc1d-8ad5b6148268/bin-2019/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:02:35,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:35,909 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 10:02:35,917 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-08 10:02:35,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 10:02:35 BoogieIcfgContainer [2018-12-08 10:02:35,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 10:02:35,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 10:02:35,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 10:02:35,926 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 10:02:35,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:34" (3/4) ... [2018-12-08 10:02:35,928 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 10:02:35,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 10:02:35,929 INFO L168 Benchmark]: Toolchain (without parser) took 1670.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 939.3 MB in the beginning and 920.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 156.1 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,930 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:35,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,930 INFO L168 Benchmark]: Boogie Preprocessor took 30.38 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. [2018-12-08 10:02:35,931 INFO L168 Benchmark]: RCFGBuilder took 260.63 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: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,931 INFO L168 Benchmark]: TraceAbstraction took 1086.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 920.1 MB in the end (delta: 151.2 MB). Peak memory consumption was 151.2 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,931 INFO L168 Benchmark]: Witness Printer took 2.80 ms. Allocated memory is still 1.2 GB. Free memory is still 920.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:35,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.38 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 260.63 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: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1086.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 920.1 MB in the end (delta: 151.2 MB). Peak memory consumption was 151.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.80 ms. Allocated memory is still 1.2 GB. Free memory is still 920.1 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List t; [L628] List p = 0; VAL [p={0:0}] [L629] COND TRUE __VERIFIER_nondet_int() [L630] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L631] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L632] t->h = 1 VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L633] t->n = p VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L634] p = t VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, t={-2147483648:0}] [L629] COND FALSE !(__VERIFIER_nondet_int()) [L636] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, t={-2147483648:0}] [L637] EXPR p->h VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=1, t={-2147483648:0}] [L637] COND FALSE !(p->h != 1) [L640] EXPR p->n VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->n={0:0}, t={-2147483648:0}] [L640] p = p->n [L636] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 9 error locations. UNSAFE Result, 1.0s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 SDtfs, 126 SDslu, 78 SDs, 0 SdLazy, 146 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 54 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2855 SizeOfPredicates, 13 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...