./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple_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_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 62ed6df4fdaf468f52c0eff1159abadc4f432e3d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 62ed6df4fdaf468f52c0eff1159abadc4f432e3d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 13:30:33,715 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 13:30:33,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 13:30:33,724 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 13:30:33,724 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 13:30:33,725 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 13:30:33,725 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 13:30:33,726 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 13:30:33,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 13:30:33,727 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 13:30:33,728 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 13:30:33,728 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 13:30:33,728 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 13:30:33,729 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 13:30:33,729 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 13:30:33,730 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 13:30:33,730 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 13:30:33,731 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 13:30:33,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 13:30:33,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 13:30:33,733 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 13:30:33,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 13:30:33,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 13:30:33,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 13:30:33,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 13:30:33,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 13:30:33,736 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 13:30:33,737 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 13:30:33,737 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 13:30:33,738 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 13:30:33,738 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 13:30:33,739 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 13:30:33,739 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 13:30:33,739 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 13:30:33,740 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 13:30:33,740 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 13:30:33,740 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-09 13:30:33,750 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 13:30:33,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 13:30:33,751 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 13:30:33,752 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 13:30:33,752 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 13:30:33,752 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 13:30:33,752 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 13:30:33,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 13:30:33,753 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 13:30:33,753 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 13:30:33,753 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 13:30:33,753 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 13:30:33,753 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 13:30:33,753 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 13:30:33,754 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 13:30:33,754 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 13:30:33,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 13:30:33,754 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 13:30:33,754 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 13:30:33,754 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 13:30:33,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 13:30:33,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 13:30:33,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 13:30:33,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:30:33,755 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 13:30:33,755 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 13:30:33,755 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 13:30:33,756 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 13:30:33,756 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_bb2df934-daf5-4215-b736-c6bbb501e58b/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 -> 62ed6df4fdaf468f52c0eff1159abadc4f432e3d [2018-12-09 13:30:33,780 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 13:30:33,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 13:30:33,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 13:30:33,793 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 13:30:33,793 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 13:30:33,794 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-09 13:30:33,830 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/276c1a66e/ff9ec843e7ad4d7ca38a3954295905c0/FLAG56738e3da [2018-12-09 13:30:34,287 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 13:30:34,287 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-09 13:30:34,293 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/276c1a66e/ff9ec843e7ad4d7ca38a3954295905c0/FLAG56738e3da [2018-12-09 13:30:34,302 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/276c1a66e/ff9ec843e7ad4d7ca38a3954295905c0 [2018-12-09 13:30:34,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 13:30:34,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-09 13:30:34,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 13:30:34,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 13:30:34,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 13:30:34,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ef7631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34, skipping insertion in model container [2018-12-09 13:30:34,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 13:30:34,332 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 13:30:34,474 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:30:34,480 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 13:30:34,543 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:30:34,572 INFO L195 MainTranslator]: Completed translation [2018-12-09 13:30:34,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34 WrapperNode [2018-12-09 13:30:34,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 13:30:34,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 13:30:34,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 13:30:34,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 13:30:34,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... [2018-12-09 13:30:34,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 13:30:34,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 13:30:34,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 13:30:34,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 13:30:34,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 13:30:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 13:30:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-09 13:30:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-09 13:30:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-09 13:30:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-09 13:30:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-09 13:30:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-09 13:30:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-09 13:30:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-09 13:30:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-09 13:30:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-09 13:30:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-09 13:30:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 13:30:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 13:30:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 13:30:34,874 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 13:30:34,874 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 13:30:34,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:34 BoogieIcfgContainer [2018-12-09 13:30:34,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 13:30:34,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 13:30:34,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 13:30:34,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 13:30:34,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:30:34" (1/3) ... [2018-12-09 13:30:34,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f7b499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:30:34, skipping insertion in model container [2018-12-09 13:30:34,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:34" (2/3) ... [2018-12-09 13:30:34,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f7b499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:30:34, skipping insertion in model container [2018-12-09 13:30:34,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:34" (3/3) ... [2018-12-09 13:30:34,879 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-12-09 13:30:34,885 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 13:30:34,889 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-12-09 13:30:34,898 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-12-09 13:30:34,912 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 13:30:34,912 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 13:30:34,912 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 13:30:34,912 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 13:30:34,912 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 13:30:34,912 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 13:30:34,912 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 13:30:34,912 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 13:30:34,913 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 13:30:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-12-09 13:30:34,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 13:30:34,926 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:34,927 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:34,928 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:34,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1635117424, now seen corresponding path program 1 times [2018-12-09 13:30:34,932 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:34,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:34,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:34,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:34,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:35,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 13:30:35,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 13:30:35,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 13:30:35,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 13:30:35,015 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-12-09 13:30:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:35,026 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-12-09 13:30:35,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 13:30:35,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-09 13:30:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:35,031 INFO L225 Difference]: With dead ends: 49 [2018-12-09 13:30:35,032 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 13:30:35,033 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 [2018-12-09 13:30:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 13:30:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 13:30:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 13:30:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-12-09 13:30:35,053 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2018-12-09 13:30:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:35,053 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-12-09 13:30:35,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 13:30:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-12-09 13:30:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 13:30:35,053 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:35,054 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:35,054 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:35,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:35,054 INFO L82 PathProgramCache]: Analyzing trace with hash -850992160, now seen corresponding path program 1 times [2018-12-09 13:30:35,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:35,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:35,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:35,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:35,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 13:30:35,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:30:35,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:30:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:30:35,095 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 4 states. [2018-12-09 13:30:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:35,152 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-12-09 13:30:35,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:30:35,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 13:30:35,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:35,153 INFO L225 Difference]: With dead ends: 49 [2018-12-09 13:30:35,153 INFO L226 Difference]: Without dead ends: 49 [2018-12-09 13:30:35,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:30:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-09 13:30:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2018-12-09 13:30:35,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 13:30:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-12-09 13:30:35,157 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 11 [2018-12-09 13:30:35,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:35,157 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-12-09 13:30:35,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:30:35,157 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-12-09 13:30:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 13:30:35,157 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:35,158 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:35,158 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:35,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:35,158 INFO L82 PathProgramCache]: Analyzing trace with hash -850992159, now seen corresponding path program 1 times [2018-12-09 13:30:35,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:35,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:35,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:35,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:35,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 13:30:35,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:30:35,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:30:35,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:30:35,197 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2018-12-09 13:30:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:35,253 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-12-09 13:30:35,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:30:35,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 13:30:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:35,254 INFO L225 Difference]: With dead ends: 56 [2018-12-09 13:30:35,254 INFO L226 Difference]: Without dead ends: 56 [2018-12-09 13:30:35,254 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:30:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-09 13:30:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2018-12-09 13:30:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-09 13:30:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-12-09 13:30:35,256 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 11 [2018-12-09 13:30:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:35,257 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-12-09 13:30:35,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:30:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-12-09 13:30:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 13:30:35,257 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:35,257 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:35,257 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:35,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:35,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1777420732, now seen corresponding path program 1 times [2018-12-09 13:30:35,258 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:35,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:35,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:35,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:35,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:30:35,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:30:35,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:30:35,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:30:35,281 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-12-09 13:30:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:35,320 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-12-09 13:30:35,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:30:35,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-09 13:30:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:35,320 INFO L225 Difference]: With dead ends: 53 [2018-12-09 13:30:35,320 INFO L226 Difference]: Without dead ends: 53 [2018-12-09 13:30:35,321 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 [2018-12-09 13:30:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-09 13:30:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-12-09 13:30:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-09 13:30:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-12-09 13:30:35,323 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 16 [2018-12-09 13:30:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:35,323 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-12-09 13:30:35,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:30:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-12-09 13:30:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 13:30:35,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:35,324 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:35,324 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:35,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:35,324 INFO L82 PathProgramCache]: Analyzing trace with hash -38969261, now seen corresponding path program 1 times [2018-12-09 13:30:35,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:35,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:35,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:35,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:35,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:30:35,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 13:30:35,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 13:30:35,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 13:30:35,363 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 6 states. [2018-12-09 13:30:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:35,458 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2018-12-09 13:30:35,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 13:30:35,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-09 13:30:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:35,460 INFO L225 Difference]: With dead ends: 64 [2018-12-09 13:30:35,460 INFO L226 Difference]: Without dead ends: 64 [2018-12-09 13:30:35,460 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-09 13:30:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-12-09 13:30:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2018-12-09 13:30:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-09 13:30:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-12-09 13:30:35,463 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 19 [2018-12-09 13:30:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:35,464 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-12-09 13:30:35,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 13:30:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-12-09 13:30:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 13:30:35,464 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:35,464 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:35,464 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:35,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:35,465 INFO L82 PathProgramCache]: Analyzing trace with hash -38969260, now seen corresponding path program 1 times [2018-12-09 13:30:35,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:35,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:35,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:35,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:35,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:30:35,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 13:30:35,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 13:30:35,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 13:30:35,514 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-12-09 13:30:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:35,653 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-12-09 13:30:35,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 13:30:35,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-09 13:30:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:35,654 INFO L225 Difference]: With dead ends: 60 [2018-12-09 13:30:35,654 INFO L226 Difference]: Without dead ends: 60 [2018-12-09 13:30:35,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:30:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-09 13:30:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2018-12-09 13:30:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 13:30:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-12-09 13:30:35,657 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 19 [2018-12-09 13:30:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:35,657 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-12-09 13:30:35,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 13:30:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-12-09 13:30:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 13:30:35,658 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:35,658 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:35,658 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:35,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:35,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1662718154, now seen corresponding path program 1 times [2018-12-09 13:30:35,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:35,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:35,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:35,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:30:35,743 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 13:30:35,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:35,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:30:35,826 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-09 13:30:35,828 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 8 treesize of output 7 [2018-12-09 13:30:35,828 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,830 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,836 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-09 13:30:35,837 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 8 treesize of output 7 [2018-12-09 13:30:35,838 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,839 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,844 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,844 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-12-09 13:30:35,872 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-09 13:30:35,874 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-09 13:30:35,874 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,876 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,880 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-09 13:30:35,882 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-09 13:30:35,882 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,883 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,888 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:35,888 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-12-09 13:30:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:35,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:30:35,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2018-12-09 13:30:35,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 13:30:35,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 13:30:35,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:30:35,912 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2018-12-09 13:30:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:36,042 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-12-09 13:30:36,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 13:30:36,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-12-09 13:30:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:36,043 INFO L225 Difference]: With dead ends: 55 [2018-12-09 13:30:36,043 INFO L226 Difference]: Without dead ends: 55 [2018-12-09 13:30:36,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-12-09 13:30:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-09 13:30:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2018-12-09 13:30:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 13:30:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-12-09 13:30:36,045 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 20 [2018-12-09 13:30:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:36,045 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-12-09 13:30:36,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 13:30:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-12-09 13:30:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 13:30:36,046 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:36,046 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:36,046 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 13:30:36,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 4653910, now seen corresponding path program 1 times [2018-12-09 13:30:36,047 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:30:36,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:30:36,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:36,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:36,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:30:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:30:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:30:36,069 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 13:30:36,077 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 13:30:36,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:30:36 BoogieIcfgContainer [2018-12-09 13:30:36,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 13:30:36,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 13:30:36,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 13:30:36,085 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 13:30:36,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:34" (3/4) ... [2018-12-09 13:30:36,088 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 13:30:36,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 13:30:36,088 INFO L168 Benchmark]: Toolchain (without parser) took 1784.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -123.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:30:36,089 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:30:36,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -139.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:30:36,090 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:30:36,090 INFO L168 Benchmark]: RCFGBuilder took 271.65 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: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. [2018-12-09 13:30:36,091 INFO L168 Benchmark]: TraceAbstraction took 1209.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:30:36,091 INFO L168 Benchmark]: Witness Printer took 3.04 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:30:36,093 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -139.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 271.65 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: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1209.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.04 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 a = (List) malloc(sizeof(struct node)); VAL [a={13:0}, malloc(sizeof(struct node))={13:0}] [L628] COND FALSE !(a == 0) VAL [a={13:0}, malloc(sizeof(struct node))={13:0}] [L629] List t; [L630] List p = a; VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] p->h = 1 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L639] p->n = 0 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L640] p = a VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L641] COND TRUE p!=0 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L642] EXPR p->h VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}, p->h=1] [L642] COND FALSE !(p->h != 1) [L645] EXPR p->n VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}, p->n={0:0}] [L645] p = p->n [L641] COND FALSE !(p!=0) VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={0:0}] [L647] return 0; VAL [\result=0, a={13:0}, malloc(sizeof(struct node))={13:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 15 error locations. UNSAFE Result, 1.1s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 385 SDslu, 278 SDs, 0 SdLazy, 442 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, 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, 7 MinimizatonAttempts, 67 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 10638 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 6/8 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 [2018-12-09 13:30:37,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 13:30:37,359 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 13:30:37,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 13:30:37,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 13:30:37,366 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 13:30:37,367 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 13:30:37,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 13:30:37,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 13:30:37,368 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 13:30:37,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 13:30:37,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 13:30:37,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 13:30:37,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 13:30:37,370 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 13:30:37,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 13:30:37,371 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 13:30:37,372 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 13:30:37,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 13:30:37,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 13:30:37,375 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 13:30:37,376 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 13:30:37,377 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 13:30:37,377 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 13:30:37,377 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 13:30:37,377 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 13:30:37,378 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 13:30:37,378 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 13:30:37,379 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 13:30:37,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 13:30:37,380 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 13:30:37,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 13:30:37,380 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 13:30:37,380 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 13:30:37,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 13:30:37,382 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 13:30:37,382 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-12-09 13:30:37,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 13:30:37,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 13:30:37,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 13:30:37,392 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 13:30:37,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 13:30:37,393 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 13:30:37,393 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 13:30:37,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 13:30:37,393 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 13:30:37,393 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 13:30:37,394 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 13:30:37,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 13:30:37,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 13:30:37,394 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 13:30:37,394 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 13:30:37,394 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 13:30:37,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 13:30:37,395 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 13:30:37,395 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 13:30:37,395 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 13:30:37,395 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 13:30:37,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 13:30:37,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 13:30:37,396 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 13:30:37,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 13:30:37,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:30:37,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 13:30:37,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 13:30:37,396 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 13:30:37,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 13:30:37,397 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 13:30:37,397 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_bb2df934-daf5-4215-b736-c6bbb501e58b/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 -> 62ed6df4fdaf468f52c0eff1159abadc4f432e3d [2018-12-09 13:30:37,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 13:30:37,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 13:30:37,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 13:30:37,431 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 13:30:37,431 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 13:30:37,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-09 13:30:37,467 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/f24a7169a/363b29bddfa84793941869d9d4ba7d58/FLAGb0363c7e2 [2018-12-09 13:30:37,912 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 13:30:37,913 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-09 13:30:37,918 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/f24a7169a/363b29bddfa84793941869d9d4ba7d58/FLAGb0363c7e2 [2018-12-09 13:30:37,926 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/bin-2019/uautomizer/data/f24a7169a/363b29bddfa84793941869d9d4ba7d58 [2018-12-09 13:30:37,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 13:30:37,929 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-09 13:30:37,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 13:30:37,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 13:30:37,931 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 13:30:37,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:30:37" (1/1) ... [2018-12-09 13:30:37,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5554d819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:37, skipping insertion in model container [2018-12-09 13:30:37,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:30:37" (1/1) ... [2018-12-09 13:30:37,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 13:30:37,955 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 13:30:38,099 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:30:38,108 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 13:30:38,133 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:30:38,196 INFO L195 MainTranslator]: Completed translation [2018-12-09 13:30:38,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38 WrapperNode [2018-12-09 13:30:38,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 13:30:38,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 13:30:38,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 13:30:38,197 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 13:30:38,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... [2018-12-09 13:30:38,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... [2018-12-09 13:30:38,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... [2018-12-09 13:30:38,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... [2018-12-09 13:30:38,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... [2018-12-09 13:30:38,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... [2018-12-09 13:30:38,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... [2018-12-09 13:30:38,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 13:30:38,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 13:30:38,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 13:30:38,228 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 13:30:38,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 13:30:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 13:30:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-09 13:30:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-09 13:30:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-09 13:30:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-09 13:30:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-09 13:30:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-09 13:30:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-09 13:30:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-09 13:30:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-09 13:30:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-09 13:30:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-09 13:30:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-09 13:30:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-09 13:30:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-09 13:30:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-09 13:30:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-09 13:30:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-09 13:30:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-09 13:30:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 13:30:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 13:30:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 13:30:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 13:30:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 13:30:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 13:30:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 13:30:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 13:30:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 13:30:38,509 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 13:30:38,510 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 13:30:38,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:38 BoogieIcfgContainer [2018-12-09 13:30:38,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 13:30:38,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 13:30:38,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 13:30:38,512 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 13:30:38,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:30:37" (1/3) ... [2018-12-09 13:30:38,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e26d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:30:38, skipping insertion in model container [2018-12-09 13:30:38,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:38" (2/3) ... [2018-12-09 13:30:38,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e26d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:30:38, skipping insertion in model container [2018-12-09 13:30:38,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:38" (3/3) ... [2018-12-09 13:30:38,514 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-12-09 13:30:38,519 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 13:30:38,524 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-12-09 13:30:38,532 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-12-09 13:30:38,546 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 13:30:38,546 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 13:30:38,546 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 13:30:38,546 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 13:30:38,546 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 13:30:38,546 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 13:30:38,546 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 13:30:38,546 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 13:30:38,547 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 13:30:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-12-09 13:30:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 13:30:38,559 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:38,560 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:38,561 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-09 13:30:38,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:38,564 INFO L82 PathProgramCache]: Analyzing trace with hash 915497384, now seen corresponding path program 1 times [2018-12-09 13:30:38,566 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 13:30:38,567 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:38,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:38,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:30:38,647 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 [2018-12-09 13:30:38,648 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:38,656 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:38,656 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-09 13:30:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:38,676 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:30:38,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:38,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 13:30:38,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:30:38,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:30:38,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:30:38,690 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2018-12-09 13:30:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:38,885 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2018-12-09 13:30:38,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:30:38,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-09 13:30:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:38,894 INFO L225 Difference]: With dead ends: 76 [2018-12-09 13:30:38,894 INFO L226 Difference]: Without dead ends: 65 [2018-12-09 13:30:38,896 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:30:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-09 13:30:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2018-12-09 13:30:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-09 13:30:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2018-12-09 13:30:38,919 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 10 [2018-12-09 13:30:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:38,919 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2018-12-09 13:30:38,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:30:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2018-12-09 13:30:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 13:30:38,920 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:38,920 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:38,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-09 13:30:38,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:38,920 INFO L82 PathProgramCache]: Analyzing trace with hash 915497383, now seen corresponding path program 1 times [2018-12-09 13:30:38,921 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 13:30:38,921 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:38,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:38,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:30:38,948 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 [2018-12-09 13:30:38,949 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:38,950 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:38,950 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-09 13:30:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:38,957 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:30:38,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:38,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 13:30:38,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:30:38,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:30:38,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:30:38,960 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 4 states. [2018-12-09 13:30:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:39,067 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-09 13:30:39,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:30:39,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-09 13:30:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:39,069 INFO L225 Difference]: With dead ends: 51 [2018-12-09 13:30:39,069 INFO L226 Difference]: Without dead ends: 51 [2018-12-09 13:30:39,069 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:30:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-09 13:30:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-09 13:30:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-09 13:30:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-12-09 13:30:39,073 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 10 [2018-12-09 13:30:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:39,074 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-12-09 13:30:39,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:30:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-12-09 13:30:39,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 13:30:39,074 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:39,075 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:39,075 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-09 13:30:39,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:39,075 INFO L82 PathProgramCache]: Analyzing trace with hash -533544812, now seen corresponding path program 1 times [2018-12-09 13:30:39,075 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 13:30:39,076 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:39,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:39,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:30:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:39,121 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:30:39,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:39,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:30:39,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:30:39,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:30:39,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:30:39,123 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-12-09 13:30:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:39,245 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-09 13:30:39,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:30:39,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-12-09 13:30:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:39,246 INFO L225 Difference]: With dead ends: 51 [2018-12-09 13:30:39,246 INFO L226 Difference]: Without dead ends: 51 [2018-12-09 13:30:39,247 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:30:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-09 13:30:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-09 13:30:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-09 13:30:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-12-09 13:30:39,250 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 15 [2018-12-09 13:30:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:39,250 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-12-09 13:30:39,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:30:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-12-09 13:30:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 13:30:39,251 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:39,251 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:39,252 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-09 13:30:39,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:39,252 INFO L82 PathProgramCache]: Analyzing trace with hash -895242068, now seen corresponding path program 1 times [2018-12-09 13:30:39,252 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 13:30:39,252 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:39,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:39,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:30:39,308 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 [2018-12-09 13:30:39,308 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,313 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,313 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-09 13:30:39,330 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 13:30:39,334 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 10 treesize of output 9 [2018-12-09 13:30:39,334 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,337 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,356 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 13:30:39,359 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 10 treesize of output 9 [2018-12-09 13:30:39,360 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,362 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,372 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,373 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-12-09 13:30:39,389 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-12-09 13:30:39,392 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-12-09 13:30:39,393 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,395 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,406 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2018-12-09 13:30:39,410 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2018-12-09 13:30:39,410 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,412 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,416 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,416 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-12-09 13:30:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:39,437 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:30:39,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:39,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:30:39,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 13:30:39,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 13:30:39,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 13:30:39,439 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-12-09 13:30:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:39,785 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-12-09 13:30:39,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 13:30:39,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-09 13:30:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:39,787 INFO L225 Difference]: With dead ends: 60 [2018-12-09 13:30:39,787 INFO L226 Difference]: Without dead ends: 60 [2018-12-09 13:30:39,787 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:30:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-09 13:30:39,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2018-12-09 13:30:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 13:30:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-12-09 13:30:39,790 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2018-12-09 13:30:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:39,790 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-12-09 13:30:39,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 13:30:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-12-09 13:30:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 13:30:39,790 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:39,790 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:39,790 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-09 13:30:39,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash -895242069, now seen corresponding path program 1 times [2018-12-09 13:30:39,791 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 13:30:39,791 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:39,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:39,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:30:39,841 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-12-09 13:30:39,841 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,845 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,846 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-09 13:30:39,859 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 13:30:39,863 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 10 treesize of output 9 [2018-12-09 13:30:39,863 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,875 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,876 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-12-09 13:30:39,894 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-12-09 13:30:39,896 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2018-12-09 13:30:39,897 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,898 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:39,901 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 13:30:39,901 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-12-09 13:30:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:39,912 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:30:39,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:30:39,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:30:39,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 13:30:39,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 13:30:39,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 13:30:39,914 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2018-12-09 13:30:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:40,112 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-12-09 13:30:40,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 13:30:40,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-09 13:30:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:40,113 INFO L225 Difference]: With dead ends: 39 [2018-12-09 13:30:40,113 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 13:30:40,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-09 13:30:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 13:30:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2018-12-09 13:30:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 13:30:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-12-09 13:30:40,115 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2018-12-09 13:30:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:40,116 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-12-09 13:30:40,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 13:30:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-12-09 13:30:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 13:30:40,116 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:40,116 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:40,116 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-09 13:30:40,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1536484195, now seen corresponding path program 1 times [2018-12-09 13:30:40,117 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 13:30:40,117 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:40,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:30:40,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:30:40,190 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 13:30:40,193 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 10 treesize of output 9 [2018-12-09 13:30:40,193 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,196 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,212 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 13:30:40,214 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 10 treesize of output 9 [2018-12-09 13:30:40,214 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,216 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,227 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,227 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2018-12-09 13:30:40,250 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-09 13:30:40,252 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-09 13:30:40,253 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,254 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,259 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-09 13:30:40,261 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-09 13:30:40,261 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,262 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,264 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,265 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-12-09 13:30:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:40,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 13:30:40,362 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-12-09 13:30:40,365 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-12-09 13:30:40,365 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,366 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,368 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-12-09 13:30:40,370 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-12-09 13:30:40,371 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,372 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:30:40,385 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-09 13:30:40,385 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:39, output treesize:7 [2018-12-09 13:30:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:30:40,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:30:40,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-12-09 13:30:40,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 13:30:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 13:30:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:30:40,403 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2018-12-09 13:30:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:30:40,748 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-12-09 13:30:40,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 13:30:40,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-12-09 13:30:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:30:40,749 INFO L225 Difference]: With dead ends: 53 [2018-12-09 13:30:40,749 INFO L226 Difference]: Without dead ends: 53 [2018-12-09 13:30:40,750 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-12-09 13:30:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-09 13:30:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2018-12-09 13:30:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 13:30:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-12-09 13:30:40,752 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 19 [2018-12-09 13:30:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:30:40,752 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-12-09 13:30:40,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 13:30:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-12-09 13:30:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 13:30:40,753 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:30:40,753 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:30:40,754 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-09 13:30:40,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:30:40,754 INFO L82 PathProgramCache]: Analyzing trace with hash 386368445, now seen corresponding path program 1 times [2018-12-09 13:30:40,754 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 13:30:40,754 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2df934-daf5-4215-b736-c6bbb501e58b/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 [2018-12-09 13:30:40,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:30:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:30:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:30:40,876 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 13:30:40,883 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 13:30:40,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:30:40 BoogieIcfgContainer [2018-12-09 13:30:40,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 13:30:40,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 13:30:40,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 13:30:40,892 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 13:30:40,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:38" (3/4) ... [2018-12-09 13:30:40,895 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 13:30:40,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 13:30:40,895 INFO L168 Benchmark]: Toolchain (without parser) took 2966.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.2 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -257.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:30:40,896 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:30:40,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 43.3 MB. Max. memory is 11.5 GB. [2018-12-09 13:30:40,897 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 13:30:40,897 INFO L168 Benchmark]: RCFGBuilder took 282.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 11.5 GB. [2018-12-09 13:30:40,897 INFO L168 Benchmark]: TraceAbstraction took 2381.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -122.4 MB). Peak memory consumption was 279.1 MB. Max. memory is 11.5 GB. [2018-12-09 13:30:40,898 INFO L168 Benchmark]: Witness Printer took 2.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:30:40,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 43.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 282.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2381.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -122.4 MB). Peak memory consumption was 279.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 a = (List) malloc(sizeof(struct node)); VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L628] COND FALSE !(a == 0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L629] List t; [L630] List p = a; VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] p->h = 1 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L639] p->n = 0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L640] p = a VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L641] COND TRUE p!=0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L642] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=1] [L642] COND FALSE !(p->h != 1) [L645] EXPR p->n VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->n={0:0}] [L645] p = p->n [L641] COND FALSE !(p!=0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] [L647] return 0; VAL [\result=0, a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 50 locations, 15 error locations. UNSAFE Result, 2.3s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 310 SDslu, 282 SDs, 0 SdLazy, 458 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=1, 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, 6 MinimizatonAttempts, 57 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 8900 SizeOfPredicates, 35 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/6 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...