./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/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 d98e71a1078b2449fb14cda1ae702f0946372561 ................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 00:18:54,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:18:54,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:18:54,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:18:54,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:18:54,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:18:54,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:18:54,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:18:54,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:18:54,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:18:54,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:18:54,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:18:54,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:18:54,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:18:54,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:18:54,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:18:54,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:18:54,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:18:54,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:18:54,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:18:54,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:18:54,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:18:54,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:18:54,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:18:54,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:18:54,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:18:54,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:18:54,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:18:54,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:18:54,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:18:54,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:18:54,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:18:54,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:18:54,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:18:54,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:18:54,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:18:54,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:18:54,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:18:54,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:18:54,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:18:54,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:18:54,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 00:18:54,124 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:18:54,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:18:54,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:18:54,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:18:54,126 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:18:54,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:18:54,127 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:18:54,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:18:54,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:18:54,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:18:54,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:18:54,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:18:54,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:18:54,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:18:54,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:18:54,129 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:18:54,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:18:54,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:18:54,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:18:54,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:18:54,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:18:54,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:18:54,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:18:54,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:18:54,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:18:54,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:18:54,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 00:18:54,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:18:54,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/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 -> d98e71a1078b2449fb14cda1ae702f0946372561 [2019-11-20 00:18:54,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:18:54,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:18:54,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:18:54,294 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:18:54,294 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:18:54,295 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/../../sv-benchmarks/c/loops/while_infinite_loop_3.c [2019-11-20 00:18:54,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/data/d843a1dde/c8f5b6f7c7ac44f39f9e6e1ed512bc28/FLAGb44f84104 [2019-11-20 00:18:54,738 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:18:54,738 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/sv-benchmarks/c/loops/while_infinite_loop_3.c [2019-11-20 00:18:54,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/data/d843a1dde/c8f5b6f7c7ac44f39f9e6e1ed512bc28/FLAGb44f84104 [2019-11-20 00:18:54,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/data/d843a1dde/c8f5b6f7c7ac44f39f9e6e1ed512bc28 [2019-11-20 00:18:54,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:18:54,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:18:54,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:18:54,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:18:54,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:18:54,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:18:54" (1/1) ... [2019-11-20 00:18:54,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322d68be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:54, skipping insertion in model container [2019-11-20 00:18:54,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:18:54" (1/1) ... [2019-11-20 00:18:54,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:18:54,796 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:18:54,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:18:54,919 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:18:54,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:18:55,008 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:18:55,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55 WrapperNode [2019-11-20 00:18:55,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:18:55,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:18:55,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:18:55,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:18:55,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:18:55,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:18:55,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:18:55,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:18:55,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... [2019-11-20 00:18:55,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:18:55,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:18:55,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:18:55,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:18:55,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/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 [2019-11-20 00:18:55,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:18:55,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:18:55,294 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:18:55,294 INFO L285 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-20 00:18:55,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:55 BoogieIcfgContainer [2019-11-20 00:18:55,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:18:55,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:18:55,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:18:55,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:18:55,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:18:54" (1/3) ... [2019-11-20 00:18:55,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b283fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:18:55, skipping insertion in model container [2019-11-20 00:18:55,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:55" (2/3) ... [2019-11-20 00:18:55,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b283fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:18:55, skipping insertion in model container [2019-11-20 00:18:55,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:55" (3/3) ... [2019-11-20 00:18:55,302 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2019-11-20 00:18:55,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:18:55,317 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 00:18:55,327 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 00:18:55,352 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:18:55,352 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:18:55,353 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:18:55,353 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:18:55,353 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:18:55,353 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:18:55,353 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:18:55,354 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:18:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-20 00:18:55,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 00:18:55,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:18:55,375 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 00:18:55,375 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:18:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:18:55,380 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2019-11-20 00:18:55,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:18:55,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280148458] [2019-11-20 00:18:55,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:18:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:18:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:18:55,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280148458] [2019-11-20 00:18:55,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:18:55,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:18:55,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503749798] [2019-11-20 00:18:55,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 00:18:55,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:18:55,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 00:18:55,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 00:18:55,501 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-20 00:18:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:18:55,517 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2019-11-20 00:18:55,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 00:18:55,518 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-20 00:18:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:18:55,525 INFO L225 Difference]: With dead ends: 22 [2019-11-20 00:18:55,525 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 00:18:55,528 INFO L630 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 [2019-11-20 00:18:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 00:18:55,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 00:18:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 00:18:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-20 00:18:55,556 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-20 00:18:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:18:55,557 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-20 00:18:55,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 00:18:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-20 00:18:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 00:18:55,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:18:55,557 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:18:55,558 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:18:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:18:55,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2019-11-20 00:18:55,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:18:55,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145589975] [2019-11-20 00:18:55,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:18:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:18:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:18:55,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145589975] [2019-11-20 00:18:55,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:18:55,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 00:18:55,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222828392] [2019-11-20 00:18:55,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:18:55,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:18:55,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:18:55,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:18:55,626 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-20 00:18:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:18:55,666 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-11-20 00:18:55,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:18:55,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 00:18:55,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:18:55,667 INFO L225 Difference]: With dead ends: 11 [2019-11-20 00:18:55,667 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 00:18:55,668 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:18:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 00:18:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 00:18:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 00:18:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 00:18:55,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-20 00:18:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:18:55,669 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:18:55,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:18:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:18:55,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 00:18:55,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 00:18:55,698 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 00:18:55,698 INFO L440 ceAbstractionStarter]: At program point L32(lines 22 33) the Hoare annotation is: false [2019-11-20 00:18:55,698 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 00:18:55,698 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 00:18:55,698 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 00:18:55,699 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 00:18:55,699 INFO L444 ceAbstractionStarter]: For program point L24-2(lines 24 28) no Hoare annotation was computed. [2019-11-20 00:18:55,699 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-20 00:18:55,699 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 28) the Hoare annotation is: (= 0 ~x~0) [2019-11-20 00:18:55,699 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-20 00:18:55,699 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 00:18:55,699 INFO L440 ceAbstractionStarter]: At program point L4-5(lines 3 8) the Hoare annotation is: false [2019-11-20 00:18:55,699 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-20 00:18:55,700 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-20 00:18:55,700 INFO L440 ceAbstractionStarter]: At program point L14loopEntry(lines 14 17) the Hoare annotation is: (= 0 ~x~0) [2019-11-20 00:18:55,700 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 12 19) the Hoare annotation is: (= 0 ~x~0) [2019-11-20 00:18:55,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:18:55 BoogieIcfgContainer [2019-11-20 00:18:55,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 00:18:55,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:18:55,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:18:55,722 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:18:55,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:55" (3/4) ... [2019-11-20 00:18:55,727 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 00:18:55,735 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 00:18:55,735 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 00:18:55,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_16c27d13-3a17-447b-8e56-dee7bacdf243/bin/uautomizer/witness.graphml [2019-11-20 00:18:55,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:18:55,776 INFO L168 Benchmark]: Toolchain (without parser) took 1011.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 00:18:55,776 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:18:55,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:18:55,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:18:55,777 INFO L168 Benchmark]: Boogie Preprocessor took 19.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:18:55,778 INFO L168 Benchmark]: RCFGBuilder took 234.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-20 00:18:55,779 INFO L168 Benchmark]: TraceAbstraction took 424.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-11-20 00:18:55,779 INFO L168 Benchmark]: Witness Printer took 52.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-20 00:18:55,782 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 243.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 234.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 424.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Witness Printer took 52.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 == x - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 0 == x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 7 SDslu, 4 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...