./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1.i --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_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/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 43bf08ab7eab650af2134651dc434d79e4859447 ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:39:25,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:39:25,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:39:25,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:39:25,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:39:25,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:39:25,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:39:25,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:39:25,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:39:25,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:39:25,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:39:25,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:39:25,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:39:25,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:39:25,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:39:25,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:39:25,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:39:25,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:39:25,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:39:25,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:39:25,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:39:25,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:39:25,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:39:25,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:39:25,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:39:25,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:39:25,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:39:25,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:39:25,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:39:25,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:39:25,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:39:25,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:39:25,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:39:25,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:39:25,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:39:25,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:39:25,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:39:25,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:39:25,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:39:25,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:39:25,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:39:25,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:39:25,239 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:39:25,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:39:25,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:39:25,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:39:25,241 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:39:25,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:39:25,242 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:39:25,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:39:25,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:39:25,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:39:25,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:39:25,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:39:25,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:39:25,245 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:39:25,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:39:25,245 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:39:25,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:39:25,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:39:25,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:39:25,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:39:25,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:39:25,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:39:25,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:39:25,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:39:25,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:39:25,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:39:25,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:39:25,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:39:25,248 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_efc792d0-3de6-43a2-8f25-d7025e06c123/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 -> 43bf08ab7eab650af2134651dc434d79e4859447 [2019-11-19 22:39:25,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:39:25,472 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:39:25,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:39:25,477 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:39:25,478 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:39:25,479 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/../../sv-benchmarks/c/loop-new/count_by_1.i [2019-11-19 22:39:25,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/data/2b55e3648/69546f9c6c6b4fd5acdbe8d5ad3fed33/FLAG8e09728a6 [2019-11-19 22:39:25,979 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:39:25,980 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/sv-benchmarks/c/loop-new/count_by_1.i [2019-11-19 22:39:25,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/data/2b55e3648/69546f9c6c6b4fd5acdbe8d5ad3fed33/FLAG8e09728a6 [2019-11-19 22:39:26,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/data/2b55e3648/69546f9c6c6b4fd5acdbe8d5ad3fed33 [2019-11-19 22:39:26,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:39:26,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:39:26,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:39:26,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:39:26,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:39:26,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3340a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26, skipping insertion in model container [2019-11-19 22:39:26,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,377 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:39:26,394 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:39:26,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:39:26,554 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:39:26,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:39:26,658 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:39:26,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26 WrapperNode [2019-11-19 22:39:26,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:39:26,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:39:26,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:39:26,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:39:26,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:39:26,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:39:26,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:39:26,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:39:26,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... [2019-11-19 22:39:26,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:39:26,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:39:26,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:39:26,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:39:26,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/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 [2019-11-19 22:39:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:39:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:39:26,947 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:39:26,948 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 22:39:26,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:39:26 BoogieIcfgContainer [2019-11-19 22:39:26,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:39:26,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:39:26,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:39:26,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:39:26,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:39:26" (1/3) ... [2019-11-19 22:39:26,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:39:26, skipping insertion in model container [2019-11-19 22:39:26,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:39:26" (2/3) ... [2019-11-19 22:39:26,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:39:26, skipping insertion in model container [2019-11-19 22:39:26,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:39:26" (3/3) ... [2019-11-19 22:39:26,957 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2019-11-19 22:39:26,967 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:39:26,973 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 22:39:26,984 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 22:39:27,006 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:39:27,006 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:39:27,006 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:39:27,007 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:39:27,007 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:39:27,007 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:39:27,007 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:39:27,007 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:39:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-19 22:39:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-19 22:39:27,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:27,026 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-19 22:39:27,027 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:39:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash 29776202, now seen corresponding path program 1 times [2019-11-19 22:39:27,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:39:27,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752152393] [2019-11-19 22:39:27,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:39:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:39:27,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752152393] [2019-11-19 22:39:27,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:27,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:39:27,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881717224] [2019-11-19 22:39:27,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:39:27,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:39:27,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:39:27,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:39:27,179 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-19 22:39:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:27,248 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-19 22:39:27,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:39:27,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-19 22:39:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:27,259 INFO L225 Difference]: With dead ends: 21 [2019-11-19 22:39:27,259 INFO L226 Difference]: Without dead ends: 9 [2019-11-19 22:39:27,266 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:39:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-19 22:39:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-19 22:39:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-19 22:39:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-19 22:39:27,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-11-19 22:39:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:27,299 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-19 22:39:27,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:39:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-19 22:39:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:39:27,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:27,300 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:27,300 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:39:27,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:27,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1396608660, now seen corresponding path program 1 times [2019-11-19 22:39:27,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:39:27,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936851635] [2019-11-19 22:39:27,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:39:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:39:27,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936851635] [2019-11-19 22:39:27,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575791863] [2019-11-19 22:39:27,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:39:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:27,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:39:27,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:39:27,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:39:27,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-19 22:39:27,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164750646] [2019-11-19 22:39:27,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:39:27,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:39:27,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:39:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:39:27,413 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-19 22:39:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:27,437 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-19 22:39:27,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:39:27,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-19 22:39:27,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:27,438 INFO L225 Difference]: With dead ends: 15 [2019-11-19 22:39:27,438 INFO L226 Difference]: Without dead ends: 11 [2019-11-19 22:39:27,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:39:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-19 22:39:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-19 22:39:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-19 22:39:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-19 22:39:27,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2019-11-19 22:39:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:27,443 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-19 22:39:27,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:39:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-19 22:39:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 22:39:27,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:27,444 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-19 22:39:27,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:39:27,649 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:39:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:27,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2057893618, now seen corresponding path program 2 times [2019-11-19 22:39:27,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:39:27,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915638954] [2019-11-19 22:39:27,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:39:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:39:27,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915638954] [2019-11-19 22:39:27,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:27,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-19 22:39:27,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559792628] [2019-11-19 22:39:27,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:39:27,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:39:27,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:39:27,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:39:27,749 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2019-11-19 22:39:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:27,787 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-11-19 22:39:27,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:39:27,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-19 22:39:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:27,787 INFO L225 Difference]: With dead ends: 10 [2019-11-19 22:39:27,788 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 22:39:27,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:39:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 22:39:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 22:39:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 22:39:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:39:27,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-19 22:39:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:27,790 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:39:27,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:39:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:39:27,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 22:39:27,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 22:39:27,819 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 22:39:27,819 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-19 22:39:27,819 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 22:39:27,820 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 22:39:27,820 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-19 22:39:27,820 INFO L447 ceAbstractionStarter]: At program point L14(lines 10 15) the Hoare annotation is: true [2019-11-19 22:39:27,820 INFO L444 ceAbstractionStarter]: For program point L12-2(line 12) no Hoare annotation was computed. [2019-11-19 22:39:27,820 INFO L440 ceAbstractionStarter]: At program point L12-3(line 12) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2019-11-19 22:39:27,821 INFO L444 ceAbstractionStarter]: For program point L12-4(line 12) no Hoare annotation was computed. [2019-11-19 22:39:27,821 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-19 22:39:27,821 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-19 22:39:27,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:39:27 BoogieIcfgContainer [2019-11-19 22:39:27,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:39:27,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:39:27,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:39:27,836 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:39:27,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:39:26" (3/4) ... [2019-11-19 22:39:27,840 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 22:39:27,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-19 22:39:27,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 22:39:27,890 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_efc792d0-3de6-43a2-8f25-d7025e06c123/bin/uautomizer/witness.graphml [2019-11-19 22:39:27,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:39:27,892 INFO L168 Benchmark]: Toolchain (without parser) took 1546.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:39:27,893 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:39:27,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -222.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:39:27,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:39:27,895 INFO L168 Benchmark]: Boogie Preprocessor took 20.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:39:27,895 INFO L168 Benchmark]: RCFGBuilder took 244.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:39:27,896 INFO L168 Benchmark]: TraceAbstraction took 884.86 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:39:27,897 INFO L168 Benchmark]: Witness Printer took 54.42 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. [2019-11-19 22:39:27,900 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -222.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 244.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 884.86 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. * Witness Printer took 54.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 8 SDslu, 11 SDs, 0 SdLazy, 29 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 1 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/6 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...