./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_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:51,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 23:54:51,584 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 23:54:51,592 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 23:54:51,592 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 23:54:51,593 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 23:54:51,594 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 23:54:51,595 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 23:54:51,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 23:54:51,597 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 23:54:51,597 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 23:54:51,597 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 23:54:51,598 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 23:54:51,599 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 23:54:51,599 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 23:54:51,600 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 23:54:51,600 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 23:54:51,602 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 23:54:51,603 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 23:54:51,604 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 23:54:51,605 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 23:54:51,605 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 23:54:51,607 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 23:54:51,607 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 23:54:51,607 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 23:54:51,608 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 23:54:51,609 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 23:54:51,609 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 23:54:51,610 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 23:54:51,611 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 23:54:51,611 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 23:54:51,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 23:54:51,611 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 23:54:51,612 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 23:54:51,612 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 23:54:51,612 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 23:54:51,613 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-02 23:54:51,622 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 23:54:51,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 23:54:51,623 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 23:54:51,623 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 23:54:51,623 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 23:54:51,623 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 23:54:51,624 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 23:54:51,624 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 23:54:51,624 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 23:54:51,624 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 23:54:51,624 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 23:54:51,624 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 23:54:51,624 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 23:54:51,624 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 23:54:51,625 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 23:54:51,625 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 23:54:51,625 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 23:54:51,625 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 23:54:51,625 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 23:54:51,625 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 23:54:51,626 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 23:54:51,626 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 23:54:51,626 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 23:54:51,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 23:54:51,626 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 23:54:51,626 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 23:54:51,626 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 23:54:51,626 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 23:54:51,626 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_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:51,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 23:54:51,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 23:54:51,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 23:54:51,657 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 23:54:51,657 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 23:54:51,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-02 23:54:51,691 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/9fb0be6bb/5f6f60f750504cf8b4e3c45a1c6063b3/FLAG2e15ab134 [2018-12-02 23:54:52,111 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 23:54:52,112 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-02 23:54:52,118 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/9fb0be6bb/5f6f60f750504cf8b4e3c45a1c6063b3/FLAG2e15ab134 [2018-12-02 23:54:52,126 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/9fb0be6bb/5f6f60f750504cf8b4e3c45a1c6063b3 [2018-12-02 23:54:52,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 23:54:52,129 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 23:54:52,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 23:54:52,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 23:54:52,132 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 23:54:52,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68649384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52, skipping insertion in model container [2018-12-02 23:54:52,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 23:54:52,161 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 23:54:52,307 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:54:52,314 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 23:54:52,374 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:54:52,397 INFO L195 MainTranslator]: Completed translation [2018-12-02 23:54:52,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52 WrapperNode [2018-12-02 23:54:52,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 23:54:52,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 23:54:52,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 23:54:52,398 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 23:54:52,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... [2018-12-02 23:54:52,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 23:54:52,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 23:54:52,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 23:54:52,435 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 23:54:52,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 23:54:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 23:54:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-02 23:54:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 23:54:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 23:54:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 23:54:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 23:54:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 23:54:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 23:54:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 23:54:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 23:54:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 23:54:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 23:54:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 23:54:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 23:54:52,678 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 23:54:52,678 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 23:54:52,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:52 BoogieIcfgContainer [2018-12-02 23:54:52,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 23:54:52,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 23:54:52,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 23:54:52,681 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 23:54:52,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:54:52" (1/3) ... [2018-12-02 23:54:52,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38272ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:54:52, skipping insertion in model container [2018-12-02 23:54:52,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:52" (2/3) ... [2018-12-02 23:54:52,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38272ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:54:52, skipping insertion in model container [2018-12-02 23:54:52,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:52" (3/3) ... [2018-12-02 23:54:52,683 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-02 23:54:52,689 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 23:54:52,694 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-02 23:54:52,704 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-02 23:54:52,719 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 23:54:52,719 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 23:54:52,719 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 23:54:52,719 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 23:54:52,719 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 23:54:52,719 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 23:54:52,720 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 23:54:52,720 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 23:54:52,720 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 23:54:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-12-02 23:54:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 23:54:52,734 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:52,734 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:52,736 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:52,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:52,739 INFO L82 PathProgramCache]: Analyzing trace with hash 350138613, now seen corresponding path program 1 times [2018-12-02 23:54:52,740 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:52,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:52,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:52,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:52,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:52,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:52,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 23:54:52,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 23:54:52,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 23:54:52,826 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-12-02 23:54:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:52,836 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-12-02 23:54:52,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 23:54:52,837 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-12-02 23:54:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:52,843 INFO L225 Difference]: With dead ends: 34 [2018-12-02 23:54:52,843 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 23:54:52,844 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 [2018-12-02 23:54:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 23:54:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-02 23:54:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-02 23:54:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-12-02 23:54:52,864 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2018-12-02 23:54:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:52,864 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-12-02 23:54:52,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 23:54:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-12-02 23:54:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 23:54:52,865 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:52,865 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:52,865 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:52,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:52,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253782, now seen corresponding path program 1 times [2018-12-02 23:54:52,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:52,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:52,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:52,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:52,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:52,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:52,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:52,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:52,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:52,896 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 3 states. [2018-12-02 23:54:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:52,924 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-12-02 23:54:52,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:52,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 23:54:52,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:52,925 INFO L225 Difference]: With dead ends: 38 [2018-12-02 23:54:52,925 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 23:54:52,925 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 [2018-12-02 23:54:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 23:54:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2018-12-02 23:54:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-02 23:54:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-02 23:54:52,927 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-12-02 23:54:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:52,928 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-02 23:54:52,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-02 23:54:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 23:54:52,928 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:52,928 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:52,928 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:52,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253781, now seen corresponding path program 1 times [2018-12-02 23:54:52,928 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:52,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:52,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:52,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:52,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:52,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:52,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:52,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:52,966 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states. [2018-12-02 23:54:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:52,986 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-12-02 23:54:52,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:52,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 23:54:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:52,987 INFO L225 Difference]: With dead ends: 36 [2018-12-02 23:54:52,987 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 23:54:52,987 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 [2018-12-02 23:54:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 23:54:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2018-12-02 23:54:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 23:54:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-02 23:54:52,989 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2018-12-02 23:54:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:52,989 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-02 23:54:52,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-02 23:54:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 23:54:52,990 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:52,990 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:52,990 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:52,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:52,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255141, now seen corresponding path program 1 times [2018-12-02 23:54:52,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:52,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:52,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:52,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:53,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:53,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:53,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:53,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:53,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:53,003 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2018-12-02 23:54:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:53,022 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-12-02 23:54:53,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:53,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 23:54:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:53,023 INFO L225 Difference]: With dead ends: 35 [2018-12-02 23:54:53,023 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 23:54:53,023 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 [2018-12-02 23:54:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 23:54:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-12-02 23:54:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-02 23:54:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2018-12-02 23:54:53,025 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 10 [2018-12-02 23:54:53,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:53,026 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2018-12-02 23:54:53,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:53,026 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2018-12-02 23:54:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 23:54:53,026 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:53,026 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:53,026 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:53,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:53,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255097, now seen corresponding path program 1 times [2018-12-02 23:54:53,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:53,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:53,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:53,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:53,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:53,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 23:54:53,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:53,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:53,039 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2018-12-02 23:54:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:53,050 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-02 23:54:53,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:53,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 23:54:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:53,051 INFO L225 Difference]: With dead ends: 30 [2018-12-02 23:54:53,051 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 23:54:53,051 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 [2018-12-02 23:54:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 23:54:53,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-12-02 23:54:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-02 23:54:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-02 23:54:53,053 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-12-02 23:54:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:53,054 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-02 23:54:53,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-02 23:54:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 23:54:53,054 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:53,054 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:53,054 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:53,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486843, now seen corresponding path program 1 times [2018-12-02 23:54:53,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:53,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:53,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:53,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:53,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:53,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 23:54:53,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 23:54:53,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 23:54:53,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 23:54:53,083 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2018-12-02 23:54:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:53,113 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-12-02 23:54:53,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 23:54:53,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-02 23:54:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:53,114 INFO L225 Difference]: With dead ends: 38 [2018-12-02 23:54:53,114 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 23:54:53,114 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 [2018-12-02 23:54:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 23:54:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-12-02 23:54:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 23:54:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-02 23:54:53,116 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2018-12-02 23:54:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:53,116 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-02 23:54:53,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 23:54:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-02 23:54:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 23:54:53,116 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:53,116 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:53,116 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:53,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:53,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486799, now seen corresponding path program 1 times [2018-12-02 23:54:53,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:53,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:53,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:53,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:53,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:53,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 23:54:53,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 23:54:53,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 23:54:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 23:54:53,141 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2018-12-02 23:54:53,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:53,172 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-12-02 23:54:53,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 23:54:53,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-02 23:54:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:53,173 INFO L225 Difference]: With dead ends: 31 [2018-12-02 23:54:53,173 INFO L226 Difference]: Without dead ends: 31 [2018-12-02 23:54:53,173 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 [2018-12-02 23:54:53,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-02 23:54:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-12-02 23:54:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 23:54:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-12-02 23:54:53,175 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-12-02 23:54:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:53,175 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-12-02 23:54:53,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 23:54:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-12-02 23:54:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 23:54:53,176 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:53,176 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:53,176 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:53,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:53,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486798, now seen corresponding path program 1 times [2018-12-02 23:54:53,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:53,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:53,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:53,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:53,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:53,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 23:54:53,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 23:54:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 23:54:53,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 23:54:53,210 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2018-12-02 23:54:53,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:53,246 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-02 23:54:53,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 23:54:53,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-02 23:54:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:53,247 INFO L225 Difference]: With dead ends: 33 [2018-12-02 23:54:53,247 INFO L226 Difference]: Without dead ends: 33 [2018-12-02 23:54:53,247 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 [2018-12-02 23:54:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-02 23:54:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-12-02 23:54:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 23:54:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-12-02 23:54:53,249 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2018-12-02 23:54:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:53,250 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-12-02 23:54:53,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 23:54:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-12-02 23:54:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 23:54:53,250 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:53,250 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] [2018-12-02 23:54:53,251 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-12-02 23:54:53,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:53,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1315071203, now seen corresponding path program 1 times [2018-12-02 23:54:53,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:54:53,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:54:53,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:53,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:54:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:54:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:54:53,278 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 23:54:53,286 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-02 23:54:53,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:54:53 BoogieIcfgContainer [2018-12-02 23:54:53,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 23:54:53,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 23:54:53,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 23:54:53,294 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 23:54:53,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:52" (3/4) ... [2018-12-02 23:54:53,297 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 23:54:53,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 23:54:53,298 INFO L168 Benchmark]: Toolchain (without parser) took 1169.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 950.6 MB in the beginning and 938.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 110.1 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:53,299 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:54:53,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:53,300 INFO L168 Benchmark]: Boogie Preprocessor took 36.65 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:53,300 INFO L168 Benchmark]: RCFGBuilder took 243.64 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: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:53,300 INFO L168 Benchmark]: TraceAbstraction took 614.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 944.0 MB in the end (delta: 102.8 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:53,301 INFO L168 Benchmark]: Witness Printer took 3.27 ms. Allocated memory is still 1.1 GB. Free memory is still 938.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:54:53,303 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.65 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 243.64 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: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 614.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 944.0 MB in the end (delta: 102.8 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.27 ms. Allocated memory is still 1.1 GB. Free memory is still 938.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 [2018-12-02 23:54:54,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 23:54:54,746 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 23:54:54,752 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 23:54:54,752 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 23:54:54,753 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 23:54:54,754 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 23:54:54,754 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 23:54:54,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 23:54:54,756 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 23:54:54,756 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 23:54:54,756 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 23:54:54,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 23:54:54,757 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 23:54:54,758 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 23:54:54,758 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 23:54:54,758 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 23:54:54,759 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 23:54:54,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 23:54:54,761 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 23:54:54,762 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 23:54:54,762 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 23:54:54,763 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 23:54:54,763 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 23:54:54,763 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 23:54:54,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 23:54:54,764 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 23:54:54,765 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 23:54:54,765 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 23:54:54,766 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 23:54:54,766 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 23:54:54,767 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 23:54:54,767 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 23:54:54,767 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 23:54:54,768 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 23:54:54,768 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 23:54:54,768 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-12-02 23:54:54,778 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 23:54:54,778 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 23:54:54,779 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 23:54:54,779 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 23:54:54,779 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 23:54:54,780 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 23:54:54,780 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 23:54:54,780 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 23:54:54,780 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 23:54:54,780 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 23:54:54,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 23:54:54,781 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 23:54:54,781 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 23:54:54,781 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 23:54:54,781 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 23:54:54,781 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 23:54:54,781 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 23:54:54,782 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 23:54:54,782 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 23:54:54,782 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 23:54:54,782 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 23:54:54,782 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 23:54:54,782 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 23:54:54,782 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 23:54:54,783 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 23:54:54,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 23:54:54,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 23:54:54,783 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 23:54:54,783 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 23:54:54,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 23:54:54,784 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 23:54:54,784 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_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:54,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 23:54:54,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 23:54:54,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 23:54:54,818 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 23:54:54,818 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 23:54:54,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-02 23:54:54,854 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/06e4bb97f/49988fb7599948358e996964b574378b/FLAG0a388b072 [2018-12-02 23:54:55,191 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 23:54:55,191 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/sv-benchmarks/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-02 23:54:55,197 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/06e4bb97f/49988fb7599948358e996964b574378b/FLAG0a388b072 [2018-12-02 23:54:55,585 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/bin-2019/uautomizer/data/06e4bb97f/49988fb7599948358e996964b574378b [2018-12-02 23:54:55,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 23:54:55,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 23:54:55,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 23:54:55,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 23:54:55,593 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 23:54:55,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9983a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55, skipping insertion in model container [2018-12-02 23:54:55,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 23:54:55,619 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 23:54:55,764 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:54:55,773 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 23:54:55,797 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:54:55,825 INFO L195 MainTranslator]: Completed translation [2018-12-02 23:54:55,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55 WrapperNode [2018-12-02 23:54:55,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 23:54:55,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 23:54:55,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 23:54:55,826 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 23:54:55,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... [2018-12-02 23:54:55,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 23:54:55,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 23:54:55,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 23:54:55,891 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 23:54:55,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 23:54:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 23:54:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-02 23:54:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 23:54:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 23:54:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 23:54:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 23:54:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 23:54:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 23:54:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 23:54:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 23:54:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 23:54:56,135 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 23:54:56,135 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 23:54:56,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:56 BoogieIcfgContainer [2018-12-02 23:54:56,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 23:54:56,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 23:54:56,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 23:54:56,138 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 23:54:56,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:54:55" (1/3) ... [2018-12-02 23:54:56,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8d906e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:54:56, skipping insertion in model container [2018-12-02 23:54:56,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:55" (2/3) ... [2018-12-02 23:54:56,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8d906e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:54:56, skipping insertion in model container [2018-12-02 23:54:56,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:56" (3/3) ... [2018-12-02 23:54:56,140 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-12-02 23:54:56,145 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 23:54:56,150 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-02 23:54:56,159 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-02 23:54:56,173 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 23:54:56,173 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 23:54:56,173 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 23:54:56,173 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 23:54:56,174 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 23:54:56,174 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 23:54:56,174 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 23:54:56,174 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 23:54:56,174 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 23:54:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-02 23:54:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 23:54:56,186 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,187 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,188 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2128039411, now seen corresponding path program 1 times [2018-12-02 23:54:56,193 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,194 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:56,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:56,240 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:56,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:56,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:56,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 23:54:56,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 23:54:56,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 23:54:56,254 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-12-02 23:54:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:56,263 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-12-02 23:54:56,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 23:54:56,264 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-12-02 23:54:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:56,269 INFO L225 Difference]: With dead ends: 33 [2018-12-02 23:54:56,269 INFO L226 Difference]: Without dead ends: 26 [2018-12-02 23:54:56,270 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 [2018-12-02 23:54:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-02 23:54:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-02 23:54:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 23:54:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-02 23:54:56,290 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 9 [2018-12-02 23:54:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:56,290 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-02 23:54:56,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 23:54:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-02 23:54:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 23:54:56,291 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,291 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,291 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2128023472, now seen corresponding path program 1 times [2018-12-02 23:54:56,292 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,292 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:56,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:56,339 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 [2018-12-02 23:54:56,340 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 23:54:56,346 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 23:54:56,346 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 23:54:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:56,351 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:56,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:56,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:56,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:56,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:56,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:56,353 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 3 states. [2018-12-02 23:54:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:56,406 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-12-02 23:54:56,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:56,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 23:54:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:56,407 INFO L225 Difference]: With dead ends: 36 [2018-12-02 23:54:56,407 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 23:54:56,408 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 [2018-12-02 23:54:56,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 23:54:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2018-12-02 23:54:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 23:54:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-02 23:54:56,410 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2018-12-02 23:54:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:56,410 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-02 23:54:56,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-02 23:54:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 23:54:56,411 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,411 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,411 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2128023473, now seen corresponding path program 1 times [2018-12-02 23:54:56,411 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,411 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:56,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:56,452 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 [2018-12-02 23:54:56,452 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 23:54:56,458 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 23:54:56,458 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-02 23:54:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:56,466 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:56,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:56,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:56,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:56,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:56,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:56,468 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-12-02 23:54:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:56,514 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-12-02 23:54:56,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:56,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 23:54:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:56,515 INFO L225 Difference]: With dead ends: 34 [2018-12-02 23:54:56,515 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 23:54:56,516 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 [2018-12-02 23:54:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 23:54:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2018-12-02 23:54:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-02 23:54:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-02 23:54:56,518 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2018-12-02 23:54:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:56,518 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-02 23:54:56,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-02 23:54:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 23:54:56,518 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,518 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,519 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2128022113, now seen corresponding path program 1 times [2018-12-02 23:54:56,519 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,519 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:56,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:56,547 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:56,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:56,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:54:56,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:56,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:56,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:56,549 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-12-02 23:54:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:56,582 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-12-02 23:54:56,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:56,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 23:54:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:56,582 INFO L225 Difference]: With dead ends: 33 [2018-12-02 23:54:56,583 INFO L226 Difference]: Without dead ends: 32 [2018-12-02 23:54:56,583 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 [2018-12-02 23:54:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-02 23:54:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-12-02 23:54:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 23:54:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-12-02 23:54:56,585 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 9 [2018-12-02 23:54:56,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:56,585 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-12-02 23:54:56,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2018-12-02 23:54:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 23:54:56,586 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,586 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,586 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2128022157, now seen corresponding path program 1 times [2018-12-02 23:54:56,586 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,586 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:56,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:56,615 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:56,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:56,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 23:54:56,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:54:56,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:54:56,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:54:56,617 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 3 states. [2018-12-02 23:54:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:56,646 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-12-02 23:54:56,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:54:56,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 23:54:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:56,646 INFO L225 Difference]: With dead ends: 28 [2018-12-02 23:54:56,646 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 23:54:56,647 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 [2018-12-02 23:54:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 23:54:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-12-02 23:54:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 23:54:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-02 23:54:56,648 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2018-12-02 23:54:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:56,649 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-02 23:54:56,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:54:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-02 23:54:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 23:54:56,649 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,649 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,649 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,650 INFO L82 PathProgramCache]: Analyzing trace with hash -194724622, now seen corresponding path program 1 times [2018-12-02 23:54:56,650 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,650 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:56,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:56,691 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:56,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:56,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 23:54:56,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 23:54:56,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 23:54:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 23:54:56,694 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2018-12-02 23:54:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:56,789 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-12-02 23:54:56,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 23:54:56,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-02 23:54:56,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:56,790 INFO L225 Difference]: With dead ends: 36 [2018-12-02 23:54:56,790 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 23:54:56,790 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 [2018-12-02 23:54:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 23:54:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2018-12-02 23:54:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 23:54:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-02 23:54:56,793 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2018-12-02 23:54:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:56,793 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-02 23:54:56,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 23:54:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-02 23:54:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 23:54:56,794 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,794 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,794 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,794 INFO L82 PathProgramCache]: Analyzing trace with hash -194724578, now seen corresponding path program 1 times [2018-12-02 23:54:56,795 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,795 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:56,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:56,847 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 [2018-12-02 23:54:56,847 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 23:54:56,849 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 23:54:56,850 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 23:54:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:56,859 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:56,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:56,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 23:54:56,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 23:54:56,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 23:54:56,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 23:54:56,862 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 4 states. [2018-12-02 23:54:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:56,952 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-12-02 23:54:56,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 23:54:56,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-02 23:54:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:56,953 INFO L225 Difference]: With dead ends: 29 [2018-12-02 23:54:56,953 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 23:54:56,954 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 [2018-12-02 23:54:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 23:54:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2018-12-02 23:54:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 23:54:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-12-02 23:54:56,955 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2018-12-02 23:54:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:56,956 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-12-02 23:54:56,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 23:54:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-12-02 23:54:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 23:54:56,956 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:56,956 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:56,956 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:56,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:56,956 INFO L82 PathProgramCache]: Analyzing trace with hash -194724577, now seen corresponding path program 1 times [2018-12-02 23:54:56,957 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:56,957 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:56,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:54:57,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:54:57,013 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 [2018-12-02 23:54:57,013 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 23:54:57,016 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 23:54:57,017 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-02 23:54:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:54:57,032 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:54:57,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:54:57,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 23:54:57,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 23:54:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 23:54:57,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 23:54:57,034 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2018-12-02 23:54:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:54:57,111 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-12-02 23:54:57,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 23:54:57,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-02 23:54:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:54:57,112 INFO L225 Difference]: With dead ends: 31 [2018-12-02 23:54:57,113 INFO L226 Difference]: Without dead ends: 31 [2018-12-02 23:54:57,113 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 [2018-12-02 23:54:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-02 23:54:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-12-02 23:54:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 23:54:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-02 23:54:57,115 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2018-12-02 23:54:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:54:57,115 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-02 23:54:57,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 23:54:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-02 23:54:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 23:54:57,116 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:54:57,116 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:54:57,116 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-12-02 23:54:57,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:54:57,116 INFO L82 PathProgramCache]: Analyzing trace with hash -496137585, now seen corresponding path program 1 times [2018-12-02 23:54:57,116 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 23:54:57,116 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9f2c28f-d558-4752-a7c0-ee8e34a97acc/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 [2018-12-02 23:54:57,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:54:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:54:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:54:57,227 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 23:54:57,235 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-02 23:54:57,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:54:57 BoogieIcfgContainer [2018-12-02 23:54:57,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 23:54:57,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 23:54:57,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 23:54:57,244 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 23:54:57,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:56" (3/4) ... [2018-12-02 23:54:57,246 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 23:54:57,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 23:54:57,247 INFO L168 Benchmark]: Toolchain (without parser) took 1658.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 938.0 MB in the beginning and 911.4 MB in the end (delta: 26.6 MB). Peak memory consumption was 152.5 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:57,247 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-02 23:54:57,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.63 ms. Allocated memory is still 1.0 GB. Free memory was 938.0 MB in the beginning and 911.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:57,248 INFO L168 Benchmark]: Boogie Preprocessor took 64.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 911.2 MB in the beginning and 1.1 GB in the end (delta: -202.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:57,248 INFO L168 Benchmark]: RCFGBuilder took 244.74 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: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:57,249 INFO L168 Benchmark]: TraceAbstraction took 1107.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 911.4 MB in the end (delta: 163.8 MB). Peak memory consumption was 163.8 MB. Max. memory is 11.5 GB. [2018-12-02 23:54:57,249 INFO L168 Benchmark]: Witness Printer took 2.87 ms. Allocated memory is still 1.2 GB. Free memory is still 911.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:54:57,250 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 235.63 ms. Allocated memory is still 1.0 GB. Free memory was 938.0 MB in the beginning and 911.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 911.2 MB in the beginning and 1.1 GB in the end (delta: -202.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.74 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: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1107.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 911.4 MB in the end (delta: 163.8 MB). Peak memory consumption was 163.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.87 ms. Allocated memory is still 1.2 GB. Free memory is still 911.4 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...