./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/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 bae2699bcd2830a9f6fd8179c1786410249a39fb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:24:01,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:24:01,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:24:01,820 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:24:01,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:24:01,821 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:24:01,822 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:24:01,823 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:24:01,824 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:24:01,825 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:24:01,825 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:24:01,825 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:24:01,826 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:24:01,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:24:01,827 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:24:01,828 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:24:01,828 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:24:01,829 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:24:01,830 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:24:01,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:24:01,831 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:24:01,832 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:24:01,833 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:24:01,833 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:24:01,834 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:24:01,834 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:24:01,835 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:24:01,835 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:24:01,835 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:24:01,836 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:24:01,836 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:24:01,837 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:24:01,837 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:24:01,837 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:24:01,838 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:24:01,838 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:24:01,838 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 11:24:01,846 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:24:01,846 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:24:01,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:24:01,846 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:24:01,847 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:24:01,847 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:24:01,847 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:24:01,847 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:24:01,848 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:24:01,848 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:24:01,848 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:24:01,848 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:24:01,848 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:24:01,848 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 11:24:01,848 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 11:24:01,849 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 11:24:01,849 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:24:01,849 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:24:01,849 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:24:01,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:24:01,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:24:01,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:24:01,850 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:24:01,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:24:01,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:24:01,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:24:01,850 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:24:01,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:24:01,851 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_11cb0b15-5ff9-4a75-8255-f6bc22879754/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 -> bae2699bcd2830a9f6fd8179c1786410249a39fb [2018-11-28 11:24:01,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:24:01,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:24:01,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:24:01,884 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:24:01,884 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:24:01,885 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:24:01,925 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/data/fc4d01382/0c913a1833714e77babb4d8369b4cfb4/FLAG9cbb477a3 [2018-11-28 11:24:02,341 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:24:02,341 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:24:02,347 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/data/fc4d01382/0c913a1833714e77babb4d8369b4cfb4/FLAG9cbb477a3 [2018-11-28 11:24:02,356 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/data/fc4d01382/0c913a1833714e77babb4d8369b4cfb4 [2018-11-28 11:24:02,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:24:02,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 11:24:02,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:24:02,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:24:02,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:24:02,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191e2efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02, skipping insertion in model container [2018-11-28 11:24:02,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:24:02,393 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:24:02,562 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:24:02,615 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:24:02,645 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:24:02,668 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:24:02,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02 WrapperNode [2018-11-28 11:24:02,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:24:02,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:24:02,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:24:02,670 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:24:02,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... [2018-11-28 11:24:02,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:24:02,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:24:02,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:24:02,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:24:02,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/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 [2018-11-28 11:24:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:24:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:24:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 11:24:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 11:24:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrspn [2018-11-28 11:24:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:24:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 11:24:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 11:24:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 11:24:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 11:24:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 11:24:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 11:24:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 11:24:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 11:24:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 11:24:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 11:24:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure cstrspn [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:24:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:24:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:24:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:24:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:24:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:24:03,002 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:24:03,002 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 11:24:03,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:24:03 BoogieIcfgContainer [2018-11-28 11:24:03,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:24:03,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:24:03,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:24:03,005 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:24:03,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:24:02" (1/3) ... [2018-11-28 11:24:03,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28082f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:24:03, skipping insertion in model container [2018-11-28 11:24:03,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:24:02" (2/3) ... [2018-11-28 11:24:03,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28082f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:24:03, skipping insertion in model container [2018-11-28 11:24:03,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:24:03" (3/3) ... [2018-11-28 11:24:03,007 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:24:03,015 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:24:03,021 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-11-28 11:24:03,035 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-11-28 11:24:03,056 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:24:03,057 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:24:03,057 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 11:24:03,057 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:24:03,057 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:24:03,057 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:24:03,057 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:24:03,057 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:24:03,058 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:24:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-28 11:24:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:24:03,077 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,077 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,079 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1015483689, now seen corresponding path program 1 times [2018-11-28 11:24:03,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:24:03,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:24:03,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:24:03,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:24:03,226 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2018-11-28 11:24:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:03,280 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-11-28 11:24:03,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:24:03,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 11:24:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:03,289 INFO L225 Difference]: With dead ends: 37 [2018-11-28 11:24:03,289 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 11:24:03,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:24:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 11:24:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 11:24:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 11:24:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-11-28 11:24:03,319 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 10 [2018-11-28 11:24:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:03,320 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-11-28 11:24:03,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:24:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-11-28 11:24:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:24:03,320 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,320 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,321 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1015483690, now seen corresponding path program 1 times [2018-11-28 11:24:03,321 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:24:03,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:24:03,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:24:03,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:24:03,362 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 4 states. [2018-11-28 11:24:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:03,379 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-11-28 11:24:03,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:24:03,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 11:24:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:03,380 INFO L225 Difference]: With dead ends: 33 [2018-11-28 11:24:03,380 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 11:24:03,381 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:24:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 11:24:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 11:24:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 11:24:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-28 11:24:03,383 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 10 [2018-11-28 11:24:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:03,384 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-28 11:24:03,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:24:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-28 11:24:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 11:24:03,384 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,384 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,384 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1415223278, now seen corresponding path program 1 times [2018-11-28 11:24:03,385 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:24:03,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:24:03,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:24:03,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:24:03,415 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2018-11-28 11:24:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:03,441 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-28 11:24:03,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:24:03,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 11:24:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:03,442 INFO L225 Difference]: With dead ends: 32 [2018-11-28 11:24:03,442 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 11:24:03,442 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:24:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 11:24:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-28 11:24:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 11:24:03,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-11-28 11:24:03,446 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 11 [2018-11-28 11:24:03,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:03,446 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-11-28 11:24:03,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:24:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-11-28 11:24:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 11:24:03,447 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,447 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,447 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1415223279, now seen corresponding path program 1 times [2018-11-28 11:24:03,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:24:03,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:24:03,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:24:03,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:24:03,501 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 4 states. [2018-11-28 11:24:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:03,525 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-28 11:24:03,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:24:03,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 11:24:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:03,526 INFO L225 Difference]: With dead ends: 31 [2018-11-28 11:24:03,526 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 11:24:03,526 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:24:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 11:24:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 11:24:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 11:24:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-11-28 11:24:03,528 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 11 [2018-11-28 11:24:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:03,528 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-11-28 11:24:03,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:24:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-11-28 11:24:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 11:24:03,529 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,529 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,529 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,529 INFO L82 PathProgramCache]: Analyzing trace with hash -195009075, now seen corresponding path program 1 times [2018-11-28 11:24:03,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:24:03,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:24:03,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:24:03,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:24:03,567 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2018-11-28 11:24:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:03,610 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-11-28 11:24:03,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:24:03,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-28 11:24:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:03,611 INFO L225 Difference]: With dead ends: 30 [2018-11-28 11:24:03,611 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 11:24:03,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:24:03,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 11:24:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-28 11:24:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 11:24:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-11-28 11:24:03,614 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 15 [2018-11-28 11:24:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:03,615 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-11-28 11:24:03,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:24:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-11-28 11:24:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 11:24:03,615 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,615 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,615 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash -195009074, now seen corresponding path program 1 times [2018-11-28 11:24:03,616 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 11:24:03,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 11:24:03,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 11:24:03,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:24:03,686 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2018-11-28 11:24:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:03,763 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-11-28 11:24:03,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:24:03,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-28 11:24:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:03,764 INFO L225 Difference]: With dead ends: 33 [2018-11-28 11:24:03,764 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 11:24:03,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:24:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 11:24:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2018-11-28 11:24:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 11:24:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-11-28 11:24:03,768 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 15 [2018-11-28 11:24:03,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:03,768 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-11-28 11:24:03,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 11:24:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-11-28 11:24:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 11:24:03,769 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,769 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,769 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1575404250, now seen corresponding path program 1 times [2018-11-28 11:24:03,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 11:24:03,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:24:03,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:24:03,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:24:03,818 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 7 states. [2018-11-28 11:24:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:03,899 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-28 11:24:03,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:24:03,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-11-28 11:24:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:03,900 INFO L225 Difference]: With dead ends: 32 [2018-11-28 11:24:03,900 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 11:24:03,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:24:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 11:24:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-11-28 11:24:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 11:24:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-11-28 11:24:03,903 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2018-11-28 11:24:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:03,904 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-11-28 11:24:03,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:24:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-11-28 11:24:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 11:24:03,904 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:03,904 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:03,905 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:03,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:03,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1575404251, now seen corresponding path program 1 times [2018-11-28 11:24:03,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:03,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:03,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:03,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:03,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:03,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 11:24:03,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 11:24:03,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 11:24:03,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:24:03,992 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2018-11-28 11:24:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:04,065 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-11-28 11:24:04,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:24:04,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-11-28 11:24:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:04,066 INFO L225 Difference]: With dead ends: 35 [2018-11-28 11:24:04,066 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 11:24:04,067 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-28 11:24:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 11:24:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 11:24:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 11:24:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-28 11:24:04,069 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 18 [2018-11-28 11:24:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:04,069 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-28 11:24:04,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 11:24:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-28 11:24:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:24:04,070 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:04,070 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, 1, 1] [2018-11-28 11:24:04,070 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:04,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash -489606055, now seen corresponding path program 1 times [2018-11-28 11:24:04,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:04,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:04,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:04,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:04,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:04,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:04,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-28 11:24:04,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:24:04,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:24:04,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:24:04,195 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 11 states. [2018-11-28 11:24:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:04,318 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-11-28 11:24:04,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 11:24:04,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-11-28 11:24:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:04,319 INFO L225 Difference]: With dead ends: 58 [2018-11-28 11:24:04,319 INFO L226 Difference]: Without dead ends: 58 [2018-11-28 11:24:04,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-11-28 11:24:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-28 11:24:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2018-11-28 11:24:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 11:24:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2018-11-28 11:24:04,323 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2018-11-28 11:24:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:04,324 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2018-11-28 11:24:04,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:24:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2018-11-28 11:24:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:24:04,324 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:04,325 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, 1, 1] [2018-11-28 11:24:04,325 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:04,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:04,325 INFO L82 PathProgramCache]: Analyzing trace with hash -489603877, now seen corresponding path program 1 times [2018-11-28 11:24:04,325 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:04,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:04,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:04,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:04,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:04,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:04,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-28 11:24:04,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:24:04,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:24:04,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:24:04,454 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 11 states. [2018-11-28 11:24:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:04,551 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2018-11-28 11:24:04,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 11:24:04,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-11-28 11:24:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:04,554 INFO L225 Difference]: With dead ends: 85 [2018-11-28 11:24:04,554 INFO L226 Difference]: Without dead ends: 85 [2018-11-28 11:24:04,554 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-28 11:24:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-28 11:24:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2018-11-28 11:24:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 11:24:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-11-28 11:24:04,558 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 23 [2018-11-28 11:24:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:04,558 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-11-28 11:24:04,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:24:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-11-28 11:24:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:24:04,559 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:04,559 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, 1, 1] [2018-11-28 11:24:04,559 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:04,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:04,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1510672231, now seen corresponding path program 1 times [2018-11-28 11:24:04,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:04,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:04,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:04,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:04,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:04,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:24:04,773 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 11:24:04,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:04,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:24:04,854 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 14 treesize of output 11 [2018-11-28 11:24:04,856 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 11 treesize of output 10 [2018-11-28 11:24:04,856 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:04,858 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:04,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:24:04,868 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-11-28 11:24:05,045 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 20 treesize of output 16 [2018-11-28 11:24:05,054 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 11:24:05,055 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:24:05,059 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:05,081 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:05,082 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:29 [2018-11-28 11:24:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:05,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:24:05,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2018-11-28 11:24:05,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 11:24:05,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 11:24:05,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2018-11-28 11:24:05,181 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 20 states. [2018-11-28 11:24:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:05,884 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2018-11-28 11:24:05,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 11:24:05,884 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-11-28 11:24:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:05,885 INFO L225 Difference]: With dead ends: 91 [2018-11-28 11:24:05,885 INFO L226 Difference]: Without dead ends: 91 [2018-11-28 11:24:05,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2018-11-28 11:24:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-28 11:24:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2018-11-28 11:24:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-28 11:24:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2018-11-28 11:24:05,891 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 23 [2018-11-28 11:24:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:05,891 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2018-11-28 11:24:05,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 11:24:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2018-11-28 11:24:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:24:05,892 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:05,892 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, 1, 1] [2018-11-28 11:24:05,892 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:05,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1195944985, now seen corresponding path program 1 times [2018-11-28 11:24:05,895 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:05,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:05,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:05,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:05,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:06,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:24:06,184 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 11:24:06,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:06,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:24:06,222 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-28 11:24:06,223 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:06,225 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:06,225 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2018-11-28 11:24:06,253 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-11-28 11:24:06,258 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 11 treesize of output 10 [2018-11-28 11:24:06,258 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:06,260 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:06,266 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:24:06,266 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2018-11-28 11:24:06,294 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2018-11-28 11:24:06,296 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 11 treesize of output 10 [2018-11-28 11:24:06,296 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:06,300 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:06,306 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-11-28 11:24:06,307 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:39, output treesize:35 [2018-11-28 11:24:06,484 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2018-11-28 11:24:06,493 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 11:24:06,493 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:24:06,502 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 8 treesize of output 1 [2018-11-28 11:24:06,502 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:06,507 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:06,515 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:06,516 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:52, output treesize:29 [2018-11-28 11:24:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:06,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:24:06,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2018-11-28 11:24:06,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-28 11:24:06,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-28 11:24:06,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2018-11-28 11:24:06,633 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 27 states. [2018-11-28 11:24:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:07,284 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2018-11-28 11:24:07,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 11:24:07,284 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 23 [2018-11-28 11:24:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:07,285 INFO L225 Difference]: With dead ends: 97 [2018-11-28 11:24:07,285 INFO L226 Difference]: Without dead ends: 97 [2018-11-28 11:24:07,286 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 11:24:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-28 11:24:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2018-11-28 11:24:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-28 11:24:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2018-11-28 11:24:07,291 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 23 [2018-11-28 11:24:07,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:07,292 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2018-11-28 11:24:07,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-28 11:24:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2018-11-28 11:24:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 11:24:07,295 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:07,295 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, 1, 1, 1] [2018-11-28 11:24:07,295 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:07,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1885053830, now seen corresponding path program 1 times [2018-11-28 11:24:07,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:07,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:07,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:07,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:07,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:07,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:07,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:24:07,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:24:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:24:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:24:07,342 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand 4 states. [2018-11-28 11:24:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:07,375 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2018-11-28 11:24:07,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:24:07,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 11:24:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:07,376 INFO L225 Difference]: With dead ends: 91 [2018-11-28 11:24:07,376 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 11:24:07,376 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:24:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 11:24:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-28 11:24:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-28 11:24:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2018-11-28 11:24:07,379 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 25 [2018-11-28 11:24:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:07,379 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2018-11-28 11:24:07,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:24:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2018-11-28 11:24:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 11:24:07,380 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:07,380 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:07,380 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:07,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:07,380 INFO L82 PathProgramCache]: Analyzing trace with hash 680848861, now seen corresponding path program 2 times [2018-11-28 11:24:07,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:07,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:07,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:07,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:24:07,585 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 11:24:07,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:24:07,609 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:24:07,609 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:24:07,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:24:07,614 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-28 11:24:07,621 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 2 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 11:24:07,621 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:24:07,634 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:07,641 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:07,641 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2018-11-28 11:24:07,657 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 16 treesize of output 13 [2018-11-28 11:24:07,658 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 13 treesize of output 12 [2018-11-28 11:24:07,658 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:07,660 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:07,663 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:24:07,663 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-11-28 11:24:07,839 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 22 treesize of output 18 [2018-11-28 11:24:07,843 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2018-11-28 11:24:07,844 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:24:07,846 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:07,852 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:07,852 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:37 [2018-11-28 11:24:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:07,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:24:07,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-11-28 11:24:07,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-28 11:24:07,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-28 11:24:07,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2018-11-28 11:24:07,927 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 24 states. [2018-11-28 11:24:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:08,617 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2018-11-28 11:24:08,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 11:24:08,618 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-11-28 11:24:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:08,618 INFO L225 Difference]: With dead ends: 79 [2018-11-28 11:24:08,618 INFO L226 Difference]: Without dead ends: 56 [2018-11-28 11:24:08,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=1109, Unknown=0, NotChecked=0, Total=1332 [2018-11-28 11:24:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-28 11:24:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 32. [2018-11-28 11:24:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 11:24:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-11-28 11:24:08,621 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2018-11-28 11:24:08,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:08,621 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-11-28 11:24:08,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-28 11:24:08,621 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-11-28 11:24:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 11:24:08,621 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:08,622 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:08,622 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, cstrspnErr2REQUIRES_VIOLATION, cstrspnErr1REQUIRES_VIOLATION, cstrspnErr0REQUIRES_VIOLATION, cstrspnErr3REQUIRES_VIOLATION]=== [2018-11-28 11:24:08,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:08,622 INFO L82 PathProgramCache]: Analyzing trace with hash -199229532, now seen corresponding path program 2 times [2018-11-28 11:24:08,622 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:08,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:08,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:08,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:24:08,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:08,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:24:08,838 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 11:24:08,845 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:24:08,859 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:24:08,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:24:08,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:24:08,875 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-28 11:24:08,875 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,881 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-28 11:24:08,886 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 11:24:08,886 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,890 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,896 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,896 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2018-11-28 11:24:08,921 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 11:24:08,923 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 13 treesize of output 12 [2018-11-28 11:24:08,924 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,925 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,931 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:24:08,931 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2018-11-28 11:24:08,953 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 30 [2018-11-28 11:24:08,954 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 13 treesize of output 12 [2018-11-28 11:24:08,954 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,958 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:24:08,963 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:24:08,964 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:38 [2018-11-28 11:24:09,448 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2018-11-28 11:24:09,454 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2018-11-28 11:24:09,454 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:24:09,463 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-11-28 11:24:09,463 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 11:24:09,476 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:24:09,493 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-28 11:24:09,494 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:66, output treesize:69 [2018-11-28 11:24:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:24:09,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:24:09,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 33 [2018-11-28 11:24:09,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-28 11:24:09,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-28 11:24:09,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 11:24:09,693 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 34 states. [2018-11-28 11:24:10,666 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2018-11-28 11:24:10,919 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2018-11-28 11:24:11,080 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2018-11-28 11:24:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:12,186 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-11-28 11:24:12,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-28 11:24:12,187 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 31 [2018-11-28 11:24:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:12,187 INFO L225 Difference]: With dead ends: 57 [2018-11-28 11:24:12,187 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:24:12,188 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=481, Invalid=3679, Unknown=0, NotChecked=0, Total=4160 [2018-11-28 11:24:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:24:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:24:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:24:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:24:12,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-11-28 11:24:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:12,189 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:24:12,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-28 11:24:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:24:12,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:24:12,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:24:12 BoogieIcfgContainer [2018-11-28 11:24:12,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:24:12,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:24:12,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:24:12,193 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:24:12,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:24:03" (3/4) ... [2018-11-28 11:24:12,195 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:24:12,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:24:12,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 11:24:12,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 11:24:12,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:24:12,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrspn [2018-11-28 11:24:12,203 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-28 11:24:12,203 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 11:24:12,203 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 11:24:12,233 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_11cb0b15-5ff9-4a75-8255-f6bc22879754/bin-2019/uautomizer/witness.graphml [2018-11-28 11:24:12,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:24:12,234 INFO L168 Benchmark]: Toolchain (without parser) took 9876.36 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 240.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -131.4 MB). Peak memory consumption was 109.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:12,235 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 971.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:24:12,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:12,235 INFO L168 Benchmark]: Boogie Preprocessor took 36.92 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. [2018-11-28 11:24:12,236 INFO L168 Benchmark]: RCFGBuilder took 295.79 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:12,237 INFO L168 Benchmark]: TraceAbstraction took 9189.71 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.6 MB). Peak memory consumption was 103.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:12,237 INFO L168 Benchmark]: Witness Printer took 41.01 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-28 11:24:12,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 971.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.92 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 295.79 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9189.71 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.6 MB). Peak memory consumption was 103.2 MB. Max. memory is 11.5 GB. * Witness Printer took 41.01 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 564]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 563]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 563]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 564]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 9 error locations. SAFE Result, 9.1s OverallTime, 15 OverallIterations, 3 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 366 SDtfs, 798 SDslu, 1820 SDs, 0 SdLazy, 1956 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=12, 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, 15 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 370 ConstructedInterpolants, 45 QuantifiedInterpolants, 106460 SizeOfPredicates, 67 NumberOfNonLiveVariables, 607 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 9/54 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...