./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_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_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 45292d949331e02d780a7679ac12098a89a953bb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 45292d949331e02d780a7679ac12098a89a953bb .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 18:49:08,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:49:08,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:49:08,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:49:08,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:49:08,774 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:49:08,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:49:08,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:49:08,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:49:08,777 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:49:08,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:49:08,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:49:08,778 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:49:08,778 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:49:08,779 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:49:08,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:49:08,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:49:08,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:49:08,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:49:08,782 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:49:08,782 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:49:08,783 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:49:08,784 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:49:08,784 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:49:08,784 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:49:08,785 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:49:08,785 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:49:08,786 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:49:08,786 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:49:08,787 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:49:08,787 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:49:08,787 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:49:08,787 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:49:08,787 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:49:08,788 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:49:08,788 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:49:08,788 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-01 18:49:08,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:49:08,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:49:08,796 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:49:08,796 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 18:49:08,796 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:49:08,796 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:49:08,796 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 18:49:08,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:49:08,797 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:49:08,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:49:08,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 18:49:08,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:49:08,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 18:49:08,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:49:08,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:49:08,798 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:49:08,798 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 18:49:08,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:49:08,798 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_939901b5-28d4-4344-88cc-c43b891a6d74/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 -> 45292d949331e02d780a7679ac12098a89a953bb [2018-12-01 18:49:08,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:49:08,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:49:08,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:49:08,829 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:49:08,830 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:49:08,830 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-12-01 18:49:08,868 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/7ce1d4253/a1ec548aa93b4c97887615e719e700ac/FLAG7fb48b74c [2018-12-01 18:49:09,257 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:49:09,257 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/sv-benchmarks/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-12-01 18:49:09,263 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/7ce1d4253/a1ec548aa93b4c97887615e719e700ac/FLAG7fb48b74c [2018-12-01 18:49:09,607 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/7ce1d4253/a1ec548aa93b4c97887615e719e700ac [2018-12-01 18:49:09,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:49:09,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-01 18:49:09,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:49:09,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:49:09,612 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:49:09,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e0bb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09, skipping insertion in model container [2018-12-01 18:49:09,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:49:09,640 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:49:09,791 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:49:09,798 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:49:09,852 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:49:09,873 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:49:09,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09 WrapperNode [2018-12-01 18:49:09,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:49:09,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:49:09,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:49:09,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:49:09,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... [2018-12-01 18:49:09,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:49:09,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:49:09,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:49:09,904 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:49:09,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 18:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-01 18:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 18:49:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-01 18:49:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-01 18:49:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-01 18:49:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-01 18:49:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-01 18:49:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-01 18:49:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-01 18:49:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-01 18:49:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:49:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 18:49:10,183 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:49:10,183 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 18:49:10,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:49:10 BoogieIcfgContainer [2018-12-01 18:49:10,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:49:10,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 18:49:10,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 18:49:10,185 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 18:49:10,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 06:49:09" (1/3) ... [2018-12-01 18:49:10,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38107acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:49:10, skipping insertion in model container [2018-12-01 18:49:10,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:09" (2/3) ... [2018-12-01 18:49:10,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38107acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:49:10, skipping insertion in model container [2018-12-01 18:49:10,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:49:10" (3/3) ... [2018-12-01 18:49:10,187 INFO L112 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-12-01 18:49:10,193 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 18:49:10,198 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-12-01 18:49:10,207 INFO L257 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2018-12-01 18:49:10,221 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 18:49:10,222 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 18:49:10,222 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-01 18:49:10,222 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 18:49:10,222 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 18:49:10,222 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 18:49:10,222 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 18:49:10,222 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 18:49:10,222 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 18:49:10,231 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2018-12-01 18:49:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 18:49:10,236 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:10,237 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:10,238 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:10,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2132532229, now seen corresponding path program 1 times [2018-12-01 18:49:10,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:10,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:10,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:10,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:10,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:10,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:49:10,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 18:49:10,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 18:49:10,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 18:49:10,349 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2018-12-01 18:49:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:10,448 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2018-12-01 18:49:10,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 18:49:10,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-01 18:49:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:10,456 INFO L225 Difference]: With dead ends: 79 [2018-12-01 18:49:10,456 INFO L226 Difference]: Without dead ends: 70 [2018-12-01 18:49:10,458 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 [2018-12-01 18:49:10,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-12-01 18:49:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2018-12-01 18:49:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-01 18:49:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2018-12-01 18:49:10,480 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 11 [2018-12-01 18:49:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:10,480 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2018-12-01 18:49:10,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 18:49:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2018-12-01 18:49:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 18:49:10,481 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:10,481 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:10,481 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:10,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2132532228, now seen corresponding path program 1 times [2018-12-01 18:49:10,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:10,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:10,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:10,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:10,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:10,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:49:10,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 18:49:10,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 18:49:10,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 18:49:10,521 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 4 states. [2018-12-01 18:49:10,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:10,624 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2018-12-01 18:49:10,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 18:49:10,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-01 18:49:10,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:10,625 INFO L225 Difference]: With dead ends: 88 [2018-12-01 18:49:10,625 INFO L226 Difference]: Without dead ends: 88 [2018-12-01 18:49:10,625 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 [2018-12-01 18:49:10,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-12-01 18:49:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2018-12-01 18:49:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-12-01 18:49:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2018-12-01 18:49:10,629 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 11 [2018-12-01 18:49:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:10,629 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2018-12-01 18:49:10,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 18:49:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2018-12-01 18:49:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:49:10,630 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:10,630 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:10,630 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:10,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:10,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2029512520, now seen corresponding path program 1 times [2018-12-01 18:49:10,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:10,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:10,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:10,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:10,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:10,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 18:49:10,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:10,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:10,665 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2018-12-01 18:49:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:10,761 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2018-12-01 18:49:10,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 18:49:10,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-01 18:49:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:10,762 INFO L225 Difference]: With dead ends: 112 [2018-12-01 18:49:10,762 INFO L226 Difference]: Without dead ends: 112 [2018-12-01 18:49:10,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-12-01 18:49:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-12-01 18:49:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2018-12-01 18:49:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-12-01 18:49:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2018-12-01 18:49:10,766 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 19 [2018-12-01 18:49:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:10,766 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2018-12-01 18:49:10,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2018-12-01 18:49:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:49:10,767 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:10,767 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:10,767 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:10,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:10,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1001615762, now seen corresponding path program 1 times [2018-12-01 18:49:10,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:10,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:10,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:10,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:10,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:10,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:10,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:10,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:10,802 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2018-12-01 18:49:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:10,927 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2018-12-01 18:49:10,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 18:49:10,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-01 18:49:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:10,928 INFO L225 Difference]: With dead ends: 105 [2018-12-01 18:49:10,928 INFO L226 Difference]: Without dead ends: 105 [2018-12-01 18:49:10,928 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 [2018-12-01 18:49:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-12-01 18:49:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2018-12-01 18:49:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-01 18:49:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2018-12-01 18:49:10,931 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2018-12-01 18:49:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:10,932 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2018-12-01 18:49:10,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2018-12-01 18:49:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:49:10,932 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:10,932 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:10,932 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:10,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:10,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1001615761, now seen corresponding path program 1 times [2018-12-01 18:49:10,933 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:10,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:10,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:10,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:10,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:10,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:10,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:10,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:10,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:10,985 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 6 states. [2018-12-01 18:49:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:11,177 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2018-12-01 18:49:11,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 18:49:11,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-01 18:49:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:11,178 INFO L225 Difference]: With dead ends: 106 [2018-12-01 18:49:11,178 INFO L226 Difference]: Without dead ends: 106 [2018-12-01 18:49:11,179 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 [2018-12-01 18:49:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-12-01 18:49:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2018-12-01 18:49:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-12-01 18:49:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2018-12-01 18:49:11,183 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 19 [2018-12-01 18:49:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:11,184 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2018-12-01 18:49:11,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2018-12-01 18:49:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 18:49:11,184 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:11,185 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] [2018-12-01 18:49:11,185 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:11,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash 398800981, now seen corresponding path program 1 times [2018-12-01 18:49:11,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:11,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:11,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:11,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:11,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:11,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 18:49:11,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:11,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:11,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:11,234 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2018-12-01 18:49:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:11,325 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2018-12-01 18:49:11,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:49:11,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-12-01 18:49:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:11,326 INFO L225 Difference]: With dead ends: 101 [2018-12-01 18:49:11,326 INFO L226 Difference]: Without dead ends: 101 [2018-12-01 18:49:11,326 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-12-01 18:49:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-12-01 18:49:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2018-12-01 18:49:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-12-01 18:49:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2018-12-01 18:49:11,329 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 21 [2018-12-01 18:49:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:11,329 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2018-12-01 18:49:11,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2018-12-01 18:49:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 18:49:11,330 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:11,330 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:11,330 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:11,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:11,330 INFO L82 PathProgramCache]: Analyzing trace with hash 102986752, now seen corresponding path program 1 times [2018-12-01 18:49:11,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:11,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:11,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:11,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:11,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:11,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:11,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:11,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:11,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:11,365 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 6 states. [2018-12-01 18:49:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:11,452 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2018-12-01 18:49:11,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 18:49:11,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-12-01 18:49:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:11,452 INFO L225 Difference]: With dead ends: 86 [2018-12-01 18:49:11,452 INFO L226 Difference]: Without dead ends: 86 [2018-12-01 18:49:11,453 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 [2018-12-01 18:49:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-12-01 18:49:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2018-12-01 18:49:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-12-01 18:49:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2018-12-01 18:49:11,456 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 21 [2018-12-01 18:49:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:11,456 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2018-12-01 18:49:11,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2018-12-01 18:49:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 18:49:11,457 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:11,457 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:11,457 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:11,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:11,458 INFO L82 PathProgramCache]: Analyzing trace with hash 102986753, now seen corresponding path program 1 times [2018-12-01 18:49:11,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:11,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:11,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:11,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:11,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:11,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:11,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:11,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:11,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:11,520 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2018-12-01 18:49:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:11,651 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2018-12-01 18:49:11,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 18:49:11,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-12-01 18:49:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:11,652 INFO L225 Difference]: With dead ends: 83 [2018-12-01 18:49:11,652 INFO L226 Difference]: Without dead ends: 83 [2018-12-01 18:49:11,652 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 [2018-12-01 18:49:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-12-01 18:49:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2018-12-01 18:49:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-12-01 18:49:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2018-12-01 18:49:11,654 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 21 [2018-12-01 18:49:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:11,654 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2018-12-01 18:49:11,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2018-12-01 18:49:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 18:49:11,655 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:11,655 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, 1] [2018-12-01 18:49:11,655 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-01 18:49:11,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:11,655 INFO L82 PathProgramCache]: Analyzing trace with hash -523696583, now seen corresponding path program 1 times [2018-12-01 18:49:11,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:49:11,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:49:11,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:11,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:49:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:49:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:49:11,677 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 18:49:11,685 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-01 18:49:11,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 06:49:11 BoogieIcfgContainer [2018-12-01 18:49:11,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 18:49:11,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:49:11,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:49:11,693 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:49:11,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:49:10" (3/4) ... [2018-12-01 18:49:11,695 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 18:49:11,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:49:11,696 INFO L168 Benchmark]: Toolchain (without parser) took 2086.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 950.6 MB in the beginning and 1.0 GB in the end (delta: -54.7 MB). Peak memory consumption was 50.2 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:11,697 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-12-01 18:49:11,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -143.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:11,697 INFO L168 Benchmark]: Boogie Preprocessor took 30.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:11,698 INFO L168 Benchmark]: RCFGBuilder took 279.50 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: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:11,698 INFO L168 Benchmark]: TraceAbstraction took 1508.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:11,698 INFO L168 Benchmark]: Witness Printer took 2.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:49:11,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 263.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -143.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 279.50 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: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1508.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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={11:0}, malloc(sizeof(struct node))={11:0}] [L628] COND FALSE !(a == 0) VAL [a={11:0}, malloc(sizeof(struct node))={11:0}] [L629] List t; [L630] List p = a; VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L645] p->h = 3 VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L646] p = a VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L647] EXPR p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 25 error locations. UNSAFE Result, 1.4s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 349 SDtfs, 596 SDslu, 757 SDs, 0 SdLazy, 1010 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 146 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 8760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 12/12 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 [2018-12-01 18:49:12,983 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:49:12,984 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:49:12,990 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:49:12,990 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:49:12,990 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:49:12,991 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:49:12,992 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:49:12,993 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:49:12,993 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:49:12,993 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:49:12,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:49:12,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:49:12,994 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:49:12,995 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:49:12,995 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:49:12,996 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:49:12,997 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:49:12,997 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:49:12,998 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:49:12,999 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:49:12,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:49:13,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:49:13,000 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:49:13,000 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:49:13,001 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:49:13,001 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:49:13,002 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:49:13,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:49:13,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:49:13,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:49:13,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:49:13,003 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:49:13,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:49:13,004 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:49:13,004 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:49:13,004 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-12-01 18:49:13,011 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:49:13,011 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:49:13,012 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:49:13,012 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 18:49:13,012 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:49:13,012 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:49:13,012 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 18:49:13,013 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:49:13,013 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:49:13,014 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:49:13,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:49:13,014 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:49:13,015 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 18:49:13,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:49:13,015 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 18:49:13,015 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_939901b5-28d4-4344-88cc-c43b891a6d74/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 -> 45292d949331e02d780a7679ac12098a89a953bb [2018-12-01 18:49:13,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:49:13,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:49:13,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:49:13,042 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:49:13,043 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:49:13,043 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-12-01 18:49:13,077 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/c14f6b626/496a97acbb4a48fca489ffdc14b42d28/FLAG2fad0861c [2018-12-01 18:49:13,452 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:49:13,452 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/sv-benchmarks/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-12-01 18:49:13,458 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/c14f6b626/496a97acbb4a48fca489ffdc14b42d28/FLAG2fad0861c [2018-12-01 18:49:13,812 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/data/c14f6b626/496a97acbb4a48fca489ffdc14b42d28 [2018-12-01 18:49:13,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:49:13,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-01 18:49:13,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:49:13,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:49:13,817 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:49:13,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:49:13" (1/1) ... [2018-12-01 18:49:13,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49da4dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:13, skipping insertion in model container [2018-12-01 18:49:13,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:49:13" (1/1) ... [2018-12-01 18:49:13,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:49:13,841 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:49:13,984 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:49:13,992 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:49:14,016 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:49:14,038 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:49:14,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14 WrapperNode [2018-12-01 18:49:14,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:49:14,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:49:14,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:49:14,039 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:49:14,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... [2018-12-01 18:49:14,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... [2018-12-01 18:49:14,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... [2018-12-01 18:49:14,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... [2018-12-01 18:49:14,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... [2018-12-01 18:49:14,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... [2018-12-01 18:49:14,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... [2018-12-01 18:49:14,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:49:14,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:49:14,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:49:14,101 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:49:14,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 18:49:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:49:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-01 18:49:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 18:49:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-01 18:49:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-01 18:49:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-01 18:49:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-01 18:49:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-01 18:49:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-01 18:49:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-01 18:49:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 18:49:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 18:49:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-01 18:49:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 18:49:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 18:49:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 18:49:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 18:49:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:49:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 18:49:14,416 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:49:14,417 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 18:49:14,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:49:14 BoogieIcfgContainer [2018-12-01 18:49:14,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:49:14,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 18:49:14,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 18:49:14,420 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 18:49:14,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 06:49:13" (1/3) ... [2018-12-01 18:49:14,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74326b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:49:14, skipping insertion in model container [2018-12-01 18:49:14,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:49:14" (2/3) ... [2018-12-01 18:49:14,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74326b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:49:14, skipping insertion in model container [2018-12-01 18:49:14,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:49:14" (3/3) ... [2018-12-01 18:49:14,423 INFO L112 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-12-01 18:49:14,431 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 18:49:14,437 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-12-01 18:49:14,450 INFO L257 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2018-12-01 18:49:14,466 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 18:49:14,466 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 18:49:14,466 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-01 18:49:14,466 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 18:49:14,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 18:49:14,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 18:49:14,466 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 18:49:14,466 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 18:49:14,467 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 18:49:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-12-01 18:49:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 18:49:14,480 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:14,481 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:14,482 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:14,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:14,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1817106079, now seen corresponding path program 1 times [2018-12-01 18:49:14,489 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:14,489 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:14,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:14,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:14,644 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 [2018-12-01 18:49:14,646 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:14,651 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:14,651 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-01 18:49:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:14,662 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:14,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:14,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:49:14,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 18:49:14,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 18:49:14,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 18:49:14,675 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2018-12-01 18:49:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:14,874 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-12-01 18:49:14,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 18:49:14,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-01 18:49:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:14,880 INFO L225 Difference]: With dead ends: 75 [2018-12-01 18:49:14,881 INFO L226 Difference]: Without dead ends: 66 [2018-12-01 18:49:14,882 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 [2018-12-01 18:49:14,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-12-01 18:49:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2018-12-01 18:49:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-12-01 18:49:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-12-01 18:49:14,905 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 10 [2018-12-01 18:49:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:14,905 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-12-01 18:49:14,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 18:49:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-12-01 18:49:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 18:49:14,906 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:14,906 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:14,906 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:14,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:14,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1817106080, now seen corresponding path program 1 times [2018-12-01 18:49:14,907 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:14,907 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:14,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:14,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:14,945 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 [2018-12-01 18:49:14,946 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:14,951 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:14,951 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-01 18:49:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:14,970 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:14,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:14,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:49:14,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 18:49:14,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 18:49:14,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 18:49:14,972 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 4 states. [2018-12-01 18:49:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:15,206 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2018-12-01 18:49:15,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 18:49:15,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-01 18:49:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:15,208 INFO L225 Difference]: With dead ends: 84 [2018-12-01 18:49:15,208 INFO L226 Difference]: Without dead ends: 84 [2018-12-01 18:49:15,208 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 [2018-12-01 18:49:15,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-12-01 18:49:15,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2018-12-01 18:49:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-12-01 18:49:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-12-01 18:49:15,213 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 10 [2018-12-01 18:49:15,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:15,213 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-12-01 18:49:15,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 18:49:15,213 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-12-01 18:49:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 18:49:15,213 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:15,214 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:15,214 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:15,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:15,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2045963699, now seen corresponding path program 1 times [2018-12-01 18:49:15,214 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:15,214 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:15,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:15,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:15,279 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 [2018-12-01 18:49:15,281 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 [2018-12-01 18:49:15,281 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,283 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,287 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,288 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-12-01 18:49:15,309 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 17 treesize of output 13 [2018-12-01 18:49:15,311 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 13 treesize of output 5 [2018-12-01 18:49:15,311 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,312 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,313 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,313 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2018-12-01 18:49:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:15,320 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:15,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:15,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 18:49:15,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 18:49:15,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 18:49:15,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-01 18:49:15,322 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 7 states. [2018-12-01 18:49:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:15,648 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2018-12-01 18:49:15,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 18:49:15,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-12-01 18:49:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:15,649 INFO L225 Difference]: With dead ends: 108 [2018-12-01 18:49:15,649 INFO L226 Difference]: Without dead ends: 108 [2018-12-01 18:49:15,650 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-01 18:49:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-12-01 18:49:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 78. [2018-12-01 18:49:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-12-01 18:49:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2018-12-01 18:49:15,654 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 17 [2018-12-01 18:49:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:15,654 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2018-12-01 18:49:15,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 18:49:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2018-12-01 18:49:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 18:49:15,655 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:15,655 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:15,655 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:15,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:15,655 INFO L82 PathProgramCache]: Analyzing trace with hash 498009381, now seen corresponding path program 1 times [2018-12-01 18:49:15,656 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:15,656 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:15,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:15,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:15,718 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 [2018-12-01 18:49:15,718 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,724 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,724 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-01 18:49:15,735 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 [2018-12-01 18:49:15,737 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 [2018-12-01 18:49:15,737 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,739 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,747 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,747 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-12-01 18:49:15,765 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 [2018-12-01 18:49:15,768 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 [2018-12-01 18:49:15,769 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,770 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:15,774 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. [2018-12-01 18:49:15,775 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-12-01 18:49:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:15,787 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:15,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:15,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:15,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:15,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:15,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:15,789 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2018-12-01 18:49:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:16,088 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-12-01 18:49:16,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:49:16,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-01 18:49:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:16,090 INFO L225 Difference]: With dead ends: 85 [2018-12-01 18:49:16,090 INFO L226 Difference]: Without dead ends: 85 [2018-12-01 18:49:16,090 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 [2018-12-01 18:49:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-12-01 18:49:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2018-12-01 18:49:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-12-01 18:49:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2018-12-01 18:49:16,093 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 17 [2018-12-01 18:49:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:16,094 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2018-12-01 18:49:16,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2018-12-01 18:49:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 18:49:16,094 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:16,094 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:16,095 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:16,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash 498009382, now seen corresponding path program 1 times [2018-12-01 18:49:16,095 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:16,095 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:16,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:16,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:16,151 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 [2018-12-01 18:49:16,151 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,155 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,155 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-01 18:49:16,172 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 [2018-12-01 18:49:16,175 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 [2018-12-01 18:49:16,176 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,179 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,196 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 [2018-12-01 18:49:16,199 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 [2018-12-01 18:49:16,199 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,202 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,212 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,212 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-12-01 18:49:16,230 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 [2018-12-01 18:49:16,233 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 [2018-12-01 18:49:16,233 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,236 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,248 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 [2018-12-01 18:49:16,250 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 [2018-12-01 18:49:16,251 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,253 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,256 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:16,256 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-12-01 18:49:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:16,275 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:16,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:16,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:16,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:16,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:16,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:16,278 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 6 states. [2018-12-01 18:49:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:16,952 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2018-12-01 18:49:16,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 18:49:16,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-01 18:49:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:16,954 INFO L225 Difference]: With dead ends: 101 [2018-12-01 18:49:16,954 INFO L226 Difference]: Without dead ends: 101 [2018-12-01 18:49:16,954 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 [2018-12-01 18:49:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-12-01 18:49:16,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2018-12-01 18:49:16,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-12-01 18:49:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2018-12-01 18:49:16,959 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 17 [2018-12-01 18:49:16,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:16,959 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2018-12-01 18:49:16,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2018-12-01 18:49:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 18:49:16,960 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:16,960 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:16,960 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:16,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1681294365, now seen corresponding path program 1 times [2018-12-01 18:49:16,961 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:16,961 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:16,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:17,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:17,012 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 [2018-12-01 18:49:17,012 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,015 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-01 18:49:17,026 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 [2018-12-01 18:49:17,028 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 [2018-12-01 18:49:17,028 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,031 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,039 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,039 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-12-01 18:49:17,053 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 [2018-12-01 18:49:17,056 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 [2018-12-01 18:49:17,056 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,057 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,061 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. [2018-12-01 18:49:17,061 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-12-01 18:49:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:17,070 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:17,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:17,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:17,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:17,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:17,073 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 6 states. [2018-12-01 18:49:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:17,310 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2018-12-01 18:49:17,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:49:17,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-12-01 18:49:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:17,311 INFO L225 Difference]: With dead ends: 71 [2018-12-01 18:49:17,312 INFO L226 Difference]: Without dead ends: 71 [2018-12-01 18:49:17,312 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-01 18:49:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-12-01 18:49:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2018-12-01 18:49:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-12-01 18:49:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2018-12-01 18:49:17,314 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 18 [2018-12-01 18:49:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:17,315 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2018-12-01 18:49:17,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2018-12-01 18:49:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 18:49:17,315 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:17,315 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:17,315 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:17,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:17,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1681294366, now seen corresponding path program 1 times [2018-12-01 18:49:17,315 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:17,316 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/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 [2018-12-01 18:49:17,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:17,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:17,365 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 [2018-12-01 18:49:17,366 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,369 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,369 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-01 18:49:17,381 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 [2018-12-01 18:49:17,385 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 [2018-12-01 18:49:17,385 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,388 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,405 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 [2018-12-01 18:49:17,408 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 [2018-12-01 18:49:17,408 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,410 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,418 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,418 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-12-01 18:49:17,431 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 [2018-12-01 18:49:17,434 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 [2018-12-01 18:49:17,435 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,437 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,446 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 [2018-12-01 18:49:17,449 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 [2018-12-01 18:49:17,449 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,451 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,456 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:17,457 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-12-01 18:49:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:17,481 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:17,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:17,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 18:49:17,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:49:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:49:17,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:49:17,484 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 6 states. [2018-12-01 18:49:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:17,941 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2018-12-01 18:49:17,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 18:49:17,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-12-01 18:49:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:17,942 INFO L225 Difference]: With dead ends: 88 [2018-12-01 18:49:17,943 INFO L226 Difference]: Without dead ends: 88 [2018-12-01 18:49:17,943 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-01 18:49:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-12-01 18:49:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2018-12-01 18:49:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-12-01 18:49:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-12-01 18:49:17,946 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 18 [2018-12-01 18:49:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:17,947 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-12-01 18:49:17,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:49:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-12-01 18:49:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:49:17,948 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:17,948 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:49:17,948 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:17,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:17,948 INFO L82 PathProgramCache]: Analyzing trace with hash 876328410, now seen corresponding path program 1 times [2018-12-01 18:49:17,949 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:17,949 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 18:49:17,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:49:18,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:49:18,024 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 [2018-12-01 18:49:18,025 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 [2018-12-01 18:49:18,025 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:18,027 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:18,030 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:18,030 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-12-01 18:49:18,045 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 17 treesize of output 13 [2018-12-01 18:49:18,047 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 13 treesize of output 5 [2018-12-01 18:49:18,047 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 18:49:18,048 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:18,049 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 18:49:18,049 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2018-12-01 18:49:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:49:18,055 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:49:18,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:49:18,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 18:49:18,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 18:49:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 18:49:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-01 18:49:18,057 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 7 states. [2018-12-01 18:49:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:49:18,314 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2018-12-01 18:49:18,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:49:18,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-01 18:49:18,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:49:18,315 INFO L225 Difference]: With dead ends: 83 [2018-12-01 18:49:18,315 INFO L226 Difference]: Without dead ends: 83 [2018-12-01 18:49:18,315 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-01 18:49:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-12-01 18:49:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2018-12-01 18:49:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-01 18:49:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-12-01 18:49:18,318 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 19 [2018-12-01 18:49:18,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:49:18,318 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-12-01 18:49:18,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 18:49:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-12-01 18:49:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 18:49:18,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:49:18,319 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] [2018-12-01 18:49:18,319 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-12-01 18:49:18,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:49:18,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1394751826, now seen corresponding path program 1 times [2018-12-01 18:49:18,319 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:49:18,319 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_939901b5-28d4-4344-88cc-c43b891a6d74/bin-2019/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 18:49:18,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:49:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:49:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:49:18,409 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 18:49:18,417 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-01 18:49:18,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 06:49:18 BoogieIcfgContainer [2018-12-01 18:49:18,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 18:49:18,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:49:18,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:49:18,425 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:49:18,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:49:14" (3/4) ... [2018-12-01 18:49:18,428 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 18:49:18,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:49:18,428 INFO L168 Benchmark]: Toolchain (without parser) took 4614.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.5 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -117.1 MB). Peak memory consumption was 77.4 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:18,429 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. [2018-12-01 18:49:18,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.35 ms. Allocated memory is still 1.0 GB. Free memory was 938.0 MB in the beginning and 916.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:18,430 INFO L168 Benchmark]: Boogie Preprocessor took 61.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 916.5 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:18,430 INFO L168 Benchmark]: RCFGBuilder took 315.67 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:18,430 INFO L168 Benchmark]: TraceAbstraction took 4007.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.7 MB). Peak memory consumption was 74.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:49:18,431 INFO L168 Benchmark]: Witness Printer took 3.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:49:18,432 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 224.35 ms. Allocated memory is still 1.0 GB. Free memory was 938.0 MB in the beginning and 916.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 916.5 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 315.67 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4007.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.7 MB). Peak memory consumption was 74.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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] COND FALSE !(__VERIFIER_nondet_int()) [L645] p->h = 3 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L646] p = a VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L647] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 25 error locations. UNSAFE Result, 3.9s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 310 SDtfs, 690 SDslu, 606 SDs, 0 SdLazy, 974 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 134 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 8828 SizeOfPredicates, 50 NumberOfNonLiveVariables, 476 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 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...