./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 214dda1f52c1703a269c56a78db2e7c799b88ed8 ................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:55,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:55,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:55,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:55,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:55,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:55,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:55,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:55,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:55,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:55,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:55,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:55,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:55,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:55,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:55,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:55,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:55,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:55,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:55,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:55,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:55,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:55,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:55,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:55,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:55,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:55,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:55,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:55,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:55,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:55,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:55,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:55,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:55,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:55,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:55,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:55,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:55,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:55,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:55,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:55,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:55,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:55,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:55,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:55,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:55,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:55,983 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:55,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:55,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:55,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:55,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:55,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:55,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:55,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:55,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:55,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:55,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:55,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:55,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:55,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:55,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:55,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:55,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:55,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:55,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:55,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:55,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:55,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:55,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:55,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:55,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:55,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 214dda1f52c1703a269c56a78db2e7c799b88ed8 [2020-11-28 02:56:56,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:56,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:56,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:56,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:56,333 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:56,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-28 02:56:56,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/data/caa2f099e/8c8c9e1f4e244350896ae0abb81c8b1f/FLAG1ee67c77f [2020-11-28 02:56:56,970 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:56,970 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-28 02:56:56,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/data/caa2f099e/8c8c9e1f4e244350896ae0abb81c8b1f/FLAG1ee67c77f [2020-11-28 02:56:57,336 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/data/caa2f099e/8c8c9e1f4e244350896ae0abb81c8b1f [2020-11-28 02:56:57,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:57,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:57,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:57,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:57,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:57,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fddbf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57, skipping insertion in model container [2020-11-28 02:56:57,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:57,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:57,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:57,580 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:57,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:57,612 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:57,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57 WrapperNode [2020-11-28 02:56:57,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:57,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:57,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:57,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:57,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:57,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:57,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:57,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:57,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:57,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:57,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:57,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:57,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/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 [2020-11-28 02:56:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:57,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:58,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:58,111 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 02:56:58,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:58 BoogieIcfgContainer [2020-11-28 02:56:58,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:58,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:58,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:58,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:58,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:57" (1/3) ... [2020-11-28 02:56:58,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa110f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:58, skipping insertion in model container [2020-11-28 02:56:58,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (2/3) ... [2020-11-28 02:56:58,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa110f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:58, skipping insertion in model container [2020-11-28 02:56:58,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:58" (3/3) ... [2020-11-28 02:56:58,122 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-11-28 02:56:58,133 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:58,138 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:56:58,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:56:58,184 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:58,184 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:58,184 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:58,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:58,184 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:58,184 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:58,185 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:58,185 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 02:56:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:56:58,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:58,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:58,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:58,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1269629357, now seen corresponding path program 1 times [2020-11-28 02:56:58,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:58,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765946030] [2020-11-28 02:56:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:58,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765946030] [2020-11-28 02:56:58,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:58,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:58,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846361657] [2020-11-28 02:56:58,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:58,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:58,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:58,504 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-11-28 02:56:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:58,640 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-11-28 02:56:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:58,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 02:56:58,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:58,660 INFO L225 Difference]: With dead ends: 31 [2020-11-28 02:56:58,662 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 02:56:58,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 02:56:58,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 02:56:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:56:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 02:56:58,707 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-11-28 02:56:58,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:58,708 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 02:56:58,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 02:56:58,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:58,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:58,710 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:58,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:58,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:58,713 INFO L82 PathProgramCache]: Analyzing trace with hash 341011600, now seen corresponding path program 1 times [2020-11-28 02:56:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:58,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377203673] [2020-11-28 02:56:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:58,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377203673] [2020-11-28 02:56:58,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42154311] [2020-11-28 02:56:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/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 [2020-11-28 02:56:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:58,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:56:58,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:58,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:58,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:59,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:59,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 02:56:59,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341588722] [2020-11-28 02:56:59,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:59,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:59,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:59,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:59,033 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2020-11-28 02:56:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:59,071 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 02:56:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:59,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-28 02:56:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:59,073 INFO L225 Difference]: With dead ends: 17 [2020-11-28 02:56:59,073 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 02:56:59,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 02:56:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 02:56:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 02:56:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-28 02:56:59,091 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-11-28 02:56:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:59,092 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-28 02:56:59,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-28 02:56:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:56:59,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:59,093 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:59,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:56:59,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:59,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1292544691, now seen corresponding path program 2 times [2020-11-28 02:56:59,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:59,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956215063] [2020-11-28 02:56:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 02:56:59,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956215063] [2020-11-28 02:56:59,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:59,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:59,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595429465] [2020-11-28 02:56:59,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:59,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:59,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:59,374 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2020-11-28 02:56:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:59,400 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-28 02:56:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:59,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 02:56:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:59,400 INFO L225 Difference]: With dead ends: 14 [2020-11-28 02:56:59,400 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:59,401 INFO L677 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 [2020-11-28 02:56:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:59,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 02:56:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:59,402 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:59,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:59,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:59,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:59,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:56:59,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:56:59,435 INFO L270 CegarLoopResult]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) [2020-11-28 02:56:59,435 INFO L274 CegarLoopResult]: For program point L40(lines 40 66) no Hoare annotation was computed. [2020-11-28 02:56:59,435 INFO L274 CegarLoopResult]: For program point L32(lines 32 71) no Hoare annotation was computed. [2020-11-28 02:56:59,435 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:56:59,435 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:56:59,435 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:56:59,435 INFO L274 CegarLoopResult]: For program point L26(lines 26 72) no Hoare annotation was computed. [2020-11-28 02:56:59,436 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:56:59,436 INFO L274 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-11-28 02:56:59,436 INFO L274 CegarLoopResult]: For program point L20(lines 20 73) no Hoare annotation was computed. [2020-11-28 02:56:59,436 INFO L270 CegarLoopResult]: At program point L70(lines 14 74) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 50) 0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) [2020-11-28 02:56:59,436 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 02:56:59,436 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-28 02:56:59,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:59 BoogieIcfgContainer [2020-11-28 02:56:59,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:59,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:59,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:59,452 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:59,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:58" (3/4) ... [2020-11-28 02:56:59,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:59,466 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 02:56:59,466 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:56:59,467 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:59,467 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:59,508 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d861564-37b8-48af-93cf-6362a8352503/bin/uautomizer/witness.graphml [2020-11-28 02:56:59,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:59,510 INFO L168 Benchmark]: Toolchain (without parser) took 2169.94 ms. Allocated memory is still 119.5 MB. Free memory was 89.0 MB in the beginning and 84.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:59,511 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory is still 35.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:59,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.15 ms. Allocated memory is still 119.5 MB. Free memory was 89.0 MB in the beginning and 96.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:59,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.16 ms. Allocated memory is still 119.5 MB. Free memory was 96.9 MB in the beginning and 95.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:59,512 INFO L168 Benchmark]: Boogie Preprocessor took 16.33 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 94.8 MB in the end (delta: 674.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:59,513 INFO L168 Benchmark]: RCFGBuilder took 433.57 ms. Allocated memory is still 119.5 MB. Free memory was 94.8 MB in the beginning and 82.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:59,514 INFO L168 Benchmark]: TraceAbstraction took 1336.73 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 86.9 MB in the end (delta: -4.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:59,514 INFO L168 Benchmark]: Witness Printer took 56.82 ms. Allocated memory is still 119.5 MB. Free memory was 86.9 MB in the beginning and 84.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:59,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory is still 35.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.15 ms. Allocated memory is still 119.5 MB. Free memory was 89.0 MB in the beginning and 96.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.16 ms. Allocated memory is still 119.5 MB. Free memory was 96.9 MB in the beginning and 95.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.33 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 94.8 MB in the end (delta: 674.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 433.57 ms. Allocated memory is still 119.5 MB. Free memory was 94.8 MB in the beginning and 82.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1336.73 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 86.9 MB in the end (delta: -4.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.82 ms. Allocated memory is still 119.5 MB. Free memory was 86.9 MB in the beginning and 84.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 14]: Loop Invariant Derived loop invariant: main__x + 50 <= 0 || !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 51 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 15 HoareAnnotationTreeSize, 2 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1414 SizeOfPredicates, 4 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...