./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 043660dc5a969bbd34b12cbb93ba3e467b4f8613 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 01:53:16,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 01:53:16,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 01:53:16,059 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 01:53:16,059 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 01:53:16,060 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 01:53:16,061 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 01:53:16,062 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 01:53:16,063 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 01:53:16,064 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 01:53:16,064 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 01:53:16,064 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 01:53:16,065 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 01:53:16,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 01:53:16,067 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 01:53:16,067 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 01:53:16,068 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 01:53:16,069 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 01:53:16,070 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 01:53:16,071 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 01:53:16,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 01:53:16,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 01:53:16,074 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 01:53:16,075 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 01:53:16,075 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 01:53:16,075 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 01:53:16,076 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 01:53:16,077 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 01:53:16,077 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 01:53:16,078 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 01:53:16,078 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 01:53:16,079 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 01:53:16,079 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 01:53:16,079 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 01:53:16,080 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 01:53:16,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 01:53:16,080 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 01:53:16,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 01:53:16,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 01:53:16,091 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 01:53:16,091 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 01:53:16,091 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 01:53:16,091 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 01:53:16,091 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 01:53:16,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 01:53:16,092 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 01:53:16,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 01:53:16,092 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 01:53:16,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 01:53:16,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 01:53:16,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 01:53:16,093 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 01:53:16,093 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 01:53:16,093 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 01:53:16,093 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 01:53:16,093 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 01:53:16,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 01:53:16,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 01:53:16,094 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 01:53:16,094 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 01:53:16,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 01:53:16,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 01:53:16,094 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 01:53:16,094 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 01:53:16,094 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 01:53:16,094 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 01:53:16,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 01:53:16,095 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_7bea2e0a-df97-4304-8d10-92b9802f8730/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 ! call(__VERIFIER_error())) ) 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 -> 043660dc5a969bbd34b12cbb93ba3e467b4f8613 [2018-11-23 01:53:16,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 01:53:16,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 01:53:16,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 01:53:16,128 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 01:53:16,128 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 01:53:16,129 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c [2018-11-23 01:53:16,165 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/data/d9018e27c/32c3ceb4e1cc4669984a9db899ad48b1/FLAG544649ce2 [2018-11-23 01:53:16,569 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 01:53:16,570 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c [2018-11-23 01:53:16,573 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/data/d9018e27c/32c3ceb4e1cc4669984a9db899ad48b1/FLAG544649ce2 [2018-11-23 01:53:16,582 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/data/d9018e27c/32c3ceb4e1cc4669984a9db899ad48b1 [2018-11-23 01:53:16,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 01:53:16,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 01:53:16,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 01:53:16,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 01:53:16,587 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 01:53:16,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed7bee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16, skipping insertion in model container [2018-11-23 01:53:16,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 01:53:16,609 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 01:53:16,719 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:53:16,724 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 01:53:16,735 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:53:16,744 INFO L195 MainTranslator]: Completed translation [2018-11-23 01:53:16,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16 WrapperNode [2018-11-23 01:53:16,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 01:53:16,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 01:53:16,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 01:53:16,745 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 01:53:16,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 01:53:16,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 01:53:16,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 01:53:16,760 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 01:53:16,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2018-11-23 01:53:16,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 01:53:16,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 01:53:16,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 01:53:16,812 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 01:53:16,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/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 [2018-11-23 01:53:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 01:53:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 01:53:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 01:53:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 01:53:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 01:53:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 01:53:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 01:53:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 01:53:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 01:53:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-23 01:53:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-23 01:53:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 01:53:17,002 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 01:53:17,002 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 01:53:17,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:17 BoogieIcfgContainer [2018-11-23 01:53:17,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 01:53:17,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 01:53:17,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 01:53:17,006 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 01:53:17,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:53:16" (1/3) ... [2018-11-23 01:53:17,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7aa0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:17, skipping insertion in model container [2018-11-23 01:53:17,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (2/3) ... [2018-11-23 01:53:17,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7aa0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:17, skipping insertion in model container [2018-11-23 01:53:17,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:17" (3/3) ... [2018-11-23 01:53:17,009 INFO L112 eAbstractionObserver]: Analyzing ICFG test24_true-unreach-call_true-termination.c [2018-11-23 01:53:17,018 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 01:53:17,024 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 01:53:17,038 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 01:53:17,065 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 01:53:17,065 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 01:53:17,065 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 01:53:17,065 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 01:53:17,065 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 01:53:17,066 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 01:53:17,066 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 01:53:17,066 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 01:53:17,066 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 01:53:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-23 01:53:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 01:53:17,086 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:53:17,086 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:53:17,088 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:53:17,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:53:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2018-11-23 01:53:17,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:53:17,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:53:17,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:53:17,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:53:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:53:17,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:53:17,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 01:53:17,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 01:53:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 01:53:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 01:53:17,224 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-23 01:53:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:53:17,239 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-23 01:53:17,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 01:53:17,240 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-23 01:53:17,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:53:17,245 INFO L225 Difference]: With dead ends: 35 [2018-11-23 01:53:17,246 INFO L226 Difference]: Without dead ends: 17 [2018-11-23 01:53:17,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 01:53:17,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-23 01:53:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-23 01:53:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 01:53:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-23 01:53:17,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-11-23 01:53:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:53:17,269 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-23 01:53:17,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 01:53:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-23 01:53:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 01:53:17,269 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:53:17,269 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:53:17,270 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:53:17,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:53:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2018-11-23 01:53:17,270 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:53:17,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:53:17,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:53:17,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:53:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:53:17,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:53:17,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:53:17,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:53:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:53:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:53:17,358 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2018-11-23 01:53:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:53:17,404 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-23 01:53:17,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 01:53:17,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-23 01:53:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:53:17,405 INFO L225 Difference]: With dead ends: 27 [2018-11-23 01:53:17,405 INFO L226 Difference]: Without dead ends: 19 [2018-11-23 01:53:17,405 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:53:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-23 01:53:17,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-23 01:53:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-23 01:53:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-23 01:53:17,409 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-11-23 01:53:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:53:17,409 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-23 01:53:17,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:53:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-23 01:53:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 01:53:17,410 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:53:17,410 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:53:17,410 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:53:17,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:53:17,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2018-11-23 01:53:17,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:53:17,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:53:17,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:53:17,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:53:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:53:17,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:53:17,505 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/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 [2018-11-23 01:53:17,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:53:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:53:17,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:53:17,580 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-23 01:53:17,583 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-23 01:53:17,583 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,589 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,592 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,593 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-23 01:53:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:53:17,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:53:17,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2018-11-23 01:53:17,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 01:53:17,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 01:53:17,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 01:53:17,621 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-11-23 01:53:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:53:17,657 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-23 01:53:17,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 01:53:17,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-23 01:53:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:53:17,658 INFO L225 Difference]: With dead ends: 29 [2018-11-23 01:53:17,658 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 01:53:17,659 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-23 01:53:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 01:53:17,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 01:53:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 01:53:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-23 01:53:17,662 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-11-23 01:53:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:53:17,662 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-23 01:53:17,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 01:53:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-23 01:53:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 01:53:17,663 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:53:17,663 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:53:17,663 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:53:17,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:53:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2018-11-23 01:53:17,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:53:17,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:53:17,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:53:17,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:53:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:53:17,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:53:17,742 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/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 [2018-11-23 01:53:17,753 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 01:53:17,769 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 01:53:17,769 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:53:17,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:53:17,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-23 01:53:17,783 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-23 01:53:17,783 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,784 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,788 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,788 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:9 [2018-11-23 01:53:17,818 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-23 01:53:17,821 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-23 01:53:17,821 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,823 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,824 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 01:53:17,825 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-23 01:53:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:53:17,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:53:17,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-23 01:53:17,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 01:53:17,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 01:53:17,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-11-23 01:53:17,852 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2018-11-23 01:53:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:53:17,938 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-11-23 01:53:17,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 01:53:17,938 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-11-23 01:53:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:53:17,939 INFO L225 Difference]: With dead ends: 37 [2018-11-23 01:53:17,939 INFO L226 Difference]: Without dead ends: 29 [2018-11-23 01:53:17,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2018-11-23 01:53:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-23 01:53:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-23 01:53:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 01:53:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-23 01:53:17,943 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 20 [2018-11-23 01:53:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:53:17,944 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-23 01:53:17,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 01:53:17,944 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-23 01:53:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-23 01:53:17,944 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:53:17,944 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:53:17,945 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:53:17,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:53:17,945 INFO L82 PathProgramCache]: Analyzing trace with hash 57078483, now seen corresponding path program 3 times [2018-11-23 01:53:17,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:53:17,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:53:17,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:53:17,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:53:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:53:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:53:18,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:53:18,072 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/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 [2018-11-23 01:53:18,081 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 01:53:18,098 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 01:53:18,099 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:53:18,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:53:18,109 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 15 treesize of output 12 [2018-11-23 01:53:18,117 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 12 treesize of output 11 [2018-11-23 01:53:18,117 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 01:53:18,119 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 01:53:18,124 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. [2018-11-23 01:53:18,124 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2018-11-23 01:53:20,257 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#ad1~0.base_BEFORE_CALL_1| Int) (v_main_~i~0_16 Int) (|v_main_~#ad1~0.offset_BEFORE_CALL_1| Int)) (= v_main_~i~0_16 (select (select |c_#memory_int| |v_main_~#ad1~0.base_BEFORE_CALL_1|) (+ (* 8 v_main_~i~0_16) |v_main_~#ad1~0.offset_BEFORE_CALL_1|)))) is different from true [2018-11-23 01:53:26,328 WARN L180 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 28 [2018-11-23 01:53:34,387 WARN L180 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 37 [2018-11-23 01:53:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 01:53:34,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:53:34,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2018-11-23 01:53:34,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 01:53:34,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 01:53:34,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=249, Unknown=3, NotChecked=32, Total=342 [2018-11-23 01:53:34,425 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 19 states. [2018-11-23 01:53:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:53:34,998 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-23 01:53:34,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-23 01:53:34,998 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2018-11-23 01:53:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:53:34,999 INFO L225 Difference]: With dead ends: 37 [2018-11-23 01:53:34,999 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 01:53:34,999 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=286, Invalid=905, Unknown=3, NotChecked=66, Total=1260 [2018-11-23 01:53:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 01:53:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 01:53:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 01:53:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 01:53:35,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-11-23 01:53:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:53:35,001 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 01:53:35,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 01:53:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 01:53:35,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 01:53:35,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 01:53:35,052 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 01:53:35,052 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 01:53:35,053 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 01:53:35,053 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 01:53:35,053 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 01:53:35,053 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 01:53:35,053 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 01:53:35,053 INFO L448 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-23 01:53:35,053 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2018-11-23 01:53:35,053 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2018-11-23 01:53:35,054 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 32) no Hoare annotation was computed. [2018-11-23 01:53:35,054 INFO L448 ceAbstractionStarter]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2018-11-23 01:53:35,054 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2018-11-23 01:53:35,054 INFO L444 ceAbstractionStarter]: At program point L30(lines 15 38) the Hoare annotation is: false [2018-11-23 01:53:35,054 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 38) the Hoare annotation is: true [2018-11-23 01:53:35,054 INFO L448 ceAbstractionStarter]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2018-11-23 01:53:35,054 INFO L444 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: (and (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pa~0.base |main_~#ad1~0.base|) (exists ((v_main_~i~0_16 Int)) (let ((.cse0 (+ (* 8 v_main_~i~0_16) |main_~#ad1~0.offset|))) (and (= v_main_~i~0_16 (select (select |#memory_int| main_~pa~0.base) .cse0)) (= .cse0 main_~pa~0.offset))))) [2018-11-23 01:53:35,055 INFO L444 ceAbstractionStarter]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pa~0.base |main_~#ad1~0.base|) (exists ((v_main_~i~0_16 Int)) (let ((.cse0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* 8 v_main_~i~0_16) |main_~#ad1~0.offset|)))) (and (<= .cse0 main_~i~0) (<= main_~i~0 .cse0) (= v_main_~i~0_16 .cse0)))) (exists ((v_main_~i~0_16 Int)) (let ((.cse1 (+ (* 8 v_main_~i~0_16) |main_~#ad1~0.offset|))) (and (= v_main_~i~0_16 (select (select |#memory_int| main_~pa~0.base) .cse1)) (= .cse1 main_~pa~0.offset))))) [2018-11-23 01:53:35,055 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2018-11-23 01:53:35,055 INFO L451 ceAbstractionStarter]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2018-11-23 01:53:35,055 INFO L448 ceAbstractionStarter]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2018-11-23 01:53:35,055 INFO L448 ceAbstractionStarter]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2018-11-23 01:53:35,060 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,060 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,061 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,062 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 01:53:35,063 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 01:53:35,067 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,067 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,067 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,067 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 01:53:35,068 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 01:53:35,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:53:35 BoogieIcfgContainer [2018-11-23 01:53:35,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 01:53:35,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 01:53:35,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 01:53:35,070 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 01:53:35,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:17" (3/4) ... [2018-11-23 01:53:35,074 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 01:53:35,078 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 01:53:35,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 01:53:35,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2018-11-23 01:53:35,081 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-23 01:53:35,081 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 01:53:35,082 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 01:53:35,082 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 01:53:35,099 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (i <= unknown-#memory_int-unknown[pa][pa] && pa == ad1) && (\exists v_main_~i~0_16 : int :: v_main_~i~0_16 == unknown-#memory_int-unknown[pa][8 * v_main_~i~0_16 + ad1] && 8 * v_main_~i~0_16 + ad1 == pa) [2018-11-23 01:53:35,112 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7bea2e0a-df97-4304-8d10-92b9802f8730/bin-2019/uautomizer/witness.graphml [2018-11-23 01:53:35,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 01:53:35,113 INFO L168 Benchmark]: Toolchain (without parser) took 18528.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 959.1 MB in the beginning and 837.8 MB in the end (delta: 121.3 MB). Peak memory consumption was 279.1 MB. Max. memory is 11.5 GB. [2018-11-23 01:53:35,113 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:53:35,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.07 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:53:35,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.93 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:53:35,114 INFO L168 Benchmark]: Boogie Preprocessor took 51.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -207.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 01:53:35,115 INFO L168 Benchmark]: RCFGBuilder took 191.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 01:53:35,115 INFO L168 Benchmark]: TraceAbstraction took 18066.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 839.6 MB in the end (delta: 299.0 MB). Peak memory consumption was 299.0 MB. Max. memory is 11.5 GB. [2018-11-23 01:53:35,115 INFO L168 Benchmark]: Witness Printer took 41.72 ms. Allocated memory is still 1.2 GB. Free memory was 839.6 MB in the beginning and 837.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2018-11-23 01:53:35,118 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.07 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.93 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -207.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 191.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18066.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 839.6 MB in the end (delta: 299.0 MB). Peak memory consumption was 299.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.72 ms. Allocated memory is still 1.2 GB. Free memory was 839.6 MB in the beginning and 837.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2018-11-23 01:53:35,122 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,122 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,122 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,123 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 01:53:35,123 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 01:53:35,123 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,123 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,135 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_16,QUANTIFIED] [2018-11-23 01:53:35,135 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 01:53:35,136 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (i <= unknown-#memory_int-unknown[pa][pa] && pa == ad1) && (\exists v_main_~i~0_16 : int :: v_main_~i~0_16 == unknown-#memory_int-unknown[pa][8 * v_main_~i~0_16 + ad1] && 8 * v_main_~i~0_16 + ad1 == pa) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 17.9s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 77 SDtfs, 30 SDslu, 202 SDs, 0 SdLazy, 159 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 21 NumberOfFragments, 103 HoareAnnotationTreeSize, 13 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 269 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 163 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 155 ConstructedInterpolants, 18 QuantifiedInterpolants, 22629 SizeOfPredicates, 25 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 36/100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...