./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv1.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_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/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 7062369ded29eb59a5ee586d71a51c80ef84234b ................................................................................................................................................................................................................................................................................................................................................................... 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 03:15:51,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:15:51,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:15:51,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:15:51,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:15:51,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:15:51,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:15:51,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:15:51,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:15:51,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:15:51,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:15:51,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:15:51,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:15:51,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:15:51,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:15:51,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:15:51,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:15:51,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:15:51,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:15:51,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:15:51,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:15:51,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:15:51,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:15:51,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:15:51,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:15:51,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:15:51,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:15:51,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:15:51,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:15:51,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:15:51,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:15:51,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:15:51,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:15:51,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:15:51,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:15:51,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:15:51,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:15:51,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:15:51,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:15:51,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:15:51,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:15:51,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:15:51,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:15:51,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:15:51,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:15:51,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:15:51,978 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:15:51,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:15:51,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:15:51,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:15:51,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:15:51,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:15:51,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:15:51,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:15:51,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:15:51,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:15:51,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:15:51,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:15:51,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:15:51,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:15:51,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:15:51,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:15:51,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:15:51,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:51,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:15:51,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:15:51,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:15:51,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:15:51,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:15:51,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:15:51,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:15:51,984 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_356b7ebd-379a-4c31-a960-d75c26e9898e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7062369ded29eb59a5ee586d71a51c80ef84234b [2020-11-28 03:15:52,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:15:52,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:15:52,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:15:52,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:15:52,291 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:15:52,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/../../sv-benchmarks/c/loops-crafted-1/loopv1.c [2020-11-28 03:15:52,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/data/c2af56ba4/9849f6c0afdf4b55a87073ebe1e1dd17/FLAG2c1cb9237 [2020-11-28 03:15:52,952 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:15:52,952 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/sv-benchmarks/c/loops-crafted-1/loopv1.c [2020-11-28 03:15:52,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/data/c2af56ba4/9849f6c0afdf4b55a87073ebe1e1dd17/FLAG2c1cb9237 [2020-11-28 03:15:53,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/data/c2af56ba4/9849f6c0afdf4b55a87073ebe1e1dd17 [2020-11-28 03:15:53,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:15:53,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:15:53,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:53,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:15:53,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:15:53,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@262e7dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53, skipping insertion in model container [2020-11-28 03:15:53,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:15:53,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:15:53,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:53,557 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:15:53,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:53,615 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:15:53,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53 WrapperNode [2020-11-28 03:15:53,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:53,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:53,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:15:53,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:15:53,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:53,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:15:53,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:15:53,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:15:53,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... [2020-11-28 03:15:53,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:15:53,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:15:53,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:15:53,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:15:53,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/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 03:15:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:15:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:15:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:15:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:15:54,209 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:15:54,209 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:15:54,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:54 BoogieIcfgContainer [2020-11-28 03:15:54,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:15:54,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:15:54,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:15:54,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:15:54,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:53" (1/3) ... [2020-11-28 03:15:54,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ceef93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:54, skipping insertion in model container [2020-11-28 03:15:54,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:53" (2/3) ... [2020-11-28 03:15:54,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ceef93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:54, skipping insertion in model container [2020-11-28 03:15:54,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:54" (3/3) ... [2020-11-28 03:15:54,220 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-11-28 03:15:54,231 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:15:54,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:15:54,247 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:15:54,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:15:54,272 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:15:54,272 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:15:54,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:15:54,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:15:54,273 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:15:54,273 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:15:54,273 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:15:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 03:15:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:15:54,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:54,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:54,290 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1807274184, now seen corresponding path program 1 times [2020-11-28 03:15:54,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:54,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170034148] [2020-11-28 03:15:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:54,477 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 03:15:54,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170034148] [2020-11-28 03:15:54,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:54,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:15:54,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27085489] [2020-11-28 03:15:54,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:15:54,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:15:54,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:15:54,507 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 03:15:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:54,523 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-28 03:15:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:15:54,525 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 03:15:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:54,535 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:15:54,535 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:15:54,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:15:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:15:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:15:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:15:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 03:15:54,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2020-11-28 03:15:54,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:54,580 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 03:15:54,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:15:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 03:15:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:15:54,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:54,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:54,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:15:54,583 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1806976274, now seen corresponding path program 1 times [2020-11-28 03:15:54,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:54,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610294564] [2020-11-28 03:15:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:54,721 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 03:15:54,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610294564] [2020-11-28 03:15:54,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:54,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:15:54,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789240973] [2020-11-28 03:15:54,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:15:54,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:54,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:15:54,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:15:54,723 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2020-11-28 03:15:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:54,796 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-28 03:15:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:15:54,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:15:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:54,799 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:15:54,799 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:15:54,800 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 03:15:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:15:54,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-28 03:15:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:15:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-28 03:15:54,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2020-11-28 03:15:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:54,814 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-28 03:15:54,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:15:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 03:15:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:15:54,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:54,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:54,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:15:54,815 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:54,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1387754645, now seen corresponding path program 1 times [2020-11-28 03:15:54,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:54,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712088198] [2020-11-28 03:15:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:54,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712088198] [2020-11-28 03:15:54,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169014423] [2020-11-28 03:15:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/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 03:15:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:55,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:15:55,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:55,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:15:55,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-28 03:15:55,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132565303] [2020-11-28 03:15:55,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:15:55,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:55,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:15:55,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:15:55,096 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 7 states. [2020-11-28 03:15:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:55,202 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2020-11-28 03:15:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:15:55,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 03:15:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:55,203 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:15:55,203 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:15:55,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:15:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:15:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:15:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:15:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:15:55,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 03:15:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:55,205 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:15:55,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:15:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:15:55,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:15:55,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:15:55,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:15:55,473 INFO L277 CegarLoopResult]: At program point L33(lines 20 34) the Hoare annotation is: true [2020-11-28 03:15:55,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:15:55,473 INFO L274 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-11-28 03:15:55,473 INFO L270 CegarLoopResult]: At program point L27-2(lines 25 31) the Hoare annotation is: (= ULTIMATE.start_main_~i~0 (* (div ULTIMATE.start_main_~i~0 3) 3)) [2020-11-28 03:15:55,473 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 03:15:55,473 INFO L274 CegarLoopResult]: For program point L25-2(lines 25 31) no Hoare annotation was computed. [2020-11-28 03:15:55,473 INFO L274 CegarLoopResult]: For program point L13(lines 13 15) no Hoare annotation was computed. [2020-11-28 03:15:55,473 INFO L277 CegarLoopResult]: At program point L13-2(lines 12 17) the Hoare annotation is: true [2020-11-28 03:15:55,474 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-28 03:15:55,474 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:15:55,474 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:15:55,474 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:15:55,474 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-11-28 03:15:55,474 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-28 03:15:55,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:15:55 BoogieIcfgContainer [2020-11-28 03:15:55,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:15:55,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:15:55,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:15:55,491 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:15:55,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:54" (3/4) ... [2020-11-28 03:15:55,494 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:15:55,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:15:55,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:15:55,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:55,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:55,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_356b7ebd-379a-4c31-a960-d75c26e9898e/bin/uautomizer/witness.graphml [2020-11-28 03:15:55,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:15:55,553 INFO L168 Benchmark]: Toolchain (without parser) took 2215.65 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 42.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:55,553 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 67.1 MB. Free memory was 29.4 MB in the beginning and 29.4 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:55,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.40 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 74.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:55,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.67 ms. Allocated memory is still 96.5 MB. Free memory was 74.1 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:55,555 INFO L168 Benchmark]: Boogie Preprocessor took 34.52 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:55,555 INFO L168 Benchmark]: RCFGBuilder took 514.84 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 60.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:55,556 INFO L168 Benchmark]: TraceAbstraction took 1277.62 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 44.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:55,557 INFO L168 Benchmark]: Witness Printer took 61.09 ms. Allocated memory is still 96.5 MB. Free memory was 44.9 MB in the beginning and 42.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:55,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 67.1 MB. Free memory was 29.4 MB in the beginning and 29.4 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.40 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 74.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.67 ms. Allocated memory is still 96.5 MB. Free memory was 74.1 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.52 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 514.84 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 60.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1277.62 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 44.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 61.09 ms. Allocated memory is still 96.5 MB. Free memory was 44.9 MB in the beginning and 42.3 MB in the end (delta: 2.6 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: 7]: 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: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i == i / 3 * 3 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 9 SDslu, 15 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 474 SizeOfPredicates, 3 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...