./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-2.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_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/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 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59 ................................................................................................................................................................................................................................................................................................................................................................... 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 03:02:49,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:49,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:49,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:49,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:49,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:49,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:49,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:49,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:49,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:49,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:49,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:49,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:50,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:50,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:50,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:50,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:50,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:50,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:50,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:50,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:50,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:50,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:50,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:50,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:50,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:50,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:50,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:50,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:50,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:50,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:50,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:50,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:50,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:50,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:50,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:50,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:50,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:50,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:50,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:50,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:50,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:02:50,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:50,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:50,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:50,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:50,132 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:50,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:50,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:02:50,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:02:50,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:02:50,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:50,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:02:50,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:02:50,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:02:50,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:02:50,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:02:50,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:50,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:02:50,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:50,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:50,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:02:50,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:02:50,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:50,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:50,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:02:50,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:02:50,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:02:50,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:02:50,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:02:50,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:50,141 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_f9d893de-252d-4de0-bf35-8fd76bd5774b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59 [2020-11-28 03:02:50,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:50,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:50,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:50,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:50,481 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:50,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2020-11-28 03:02:50,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/data/c8959b226/0b50c8de51c9411ca86649a4b1f73787/FLAGacc6e70ec [2020-11-28 03:02:51,113 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:51,113 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2020-11-28 03:02:51,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/data/c8959b226/0b50c8de51c9411ca86649a4b1f73787/FLAGacc6e70ec [2020-11-28 03:02:51,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/data/c8959b226/0b50c8de51c9411ca86649a4b1f73787 [2020-11-28 03:02:51,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:51,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:02:51,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:51,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:51,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:51,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dce892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51, skipping insertion in model container [2020-11-28 03:02:51,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:51,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:51,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:51,757 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:51,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:51,817 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:51,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51 WrapperNode [2020-11-28 03:02:51,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:51,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:51,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:02:51,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:02:51,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:51,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:51,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:51,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:51,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... [2020-11-28 03:02:51,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:51,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:51,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:51,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:51,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/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 03:02:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:02:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:52,234 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:52,235 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:02:52,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:52 BoogieIcfgContainer [2020-11-28 03:02:52,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:52,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:52,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:52,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:52,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:51" (1/3) ... [2020-11-28 03:02:52,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f63618c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:52, skipping insertion in model container [2020-11-28 03:02:52,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:51" (2/3) ... [2020-11-28 03:02:52,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f63618c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:52, skipping insertion in model container [2020-11-28 03:02:52,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:52" (3/3) ... [2020-11-28 03:02:52,269 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-11-28 03:02:52,283 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:52,301 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:02:52,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:02:52,362 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:52,363 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:02:52,363 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:52,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:52,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:52,364 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:52,364 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:52,364 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 03:02:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:02:52,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:52,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:52,410 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:52,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:52,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1807274184, now seen corresponding path program 1 times [2020-11-28 03:02:52,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:52,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348483426] [2020-11-28 03:02:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:52,679 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 03:02:52,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348483426] [2020-11-28 03:02:52,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:52,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:02:52,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006054767] [2020-11-28 03:02:52,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:02:52,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:52,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:02:52,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:52,715 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 03:02:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:52,735 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-11-28 03:02:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:02:52,737 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 03:02:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:52,748 INFO L225 Difference]: With dead ends: 20 [2020-11-28 03:02:52,749 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:02:52,754 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 03:02:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:02:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:02:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:02:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 03:02:52,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2020-11-28 03:02:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:52,812 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 03:02:52,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:02:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 03:02:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:02:52,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:52,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:52,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:02:52,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1806976274, now seen corresponding path program 1 times [2020-11-28 03:02:52,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:52,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580629429] [2020-11-28 03:02:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:53,156 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 03:02:53,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580629429] [2020-11-28 03:02:53,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:53,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:02:53,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041685394] [2020-11-28 03:02:53,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:02:53,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:53,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:02:53,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:02:53,160 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2020-11-28 03:02:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:53,275 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-28 03:02:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:02:53,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-28 03:02:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:53,277 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:02:53,277 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:02:53,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:02:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:02:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:02:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-28 03:02:53,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2020-11-28 03:02:53,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:53,284 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-28 03:02:53,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:02:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-28 03:02:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:02:53,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:53,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:53,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:02:53,286 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:53,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:53,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1389601687, now seen corresponding path program 1 times [2020-11-28 03:02:53,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:53,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702431777] [2020-11-28 03:02:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:53,304 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:02:53,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855744] [2020-11-28 03:02:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/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 03:02:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:53,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:02:53,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:53,517 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:02:53,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-28 03:02:53,582 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 03:02:53,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702431777] [2020-11-28 03:02:53,583 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:02:53,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855744] [2020-11-28 03:02:53,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:02:53,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:02:53,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335130399] [2020-11-28 03:02:53,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:02:53,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:53,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:02:53,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:53,586 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 7 states. [2020-11-28 03:02:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:53,641 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-11-28 03:02:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:53,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 03:02:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:53,643 INFO L225 Difference]: With dead ends: 12 [2020-11-28 03:02:53,643 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:02:53,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:02:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:02:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:02:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:02:53,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 03:02:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:53,645 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:02:53,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:02:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:02:53,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:02:53,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:02:53,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:02:53,882 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:02:53,882 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-28 03:02:53,882 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 29) no Hoare annotation was computed. [2020-11-28 03:02:53,882 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-28 03:02:53,882 INFO L277 CegarLoopResult]: At program point L11-2(lines 1 32) the Hoare annotation is: true [2020-11-28 03:02:53,883 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:02:53,883 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:02:53,883 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:02:53,883 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:02:53,883 INFO L274 CegarLoopResult]: For program point L24(lines 24 28) no Hoare annotation was computed. [2020-11-28 03:02:53,883 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:02:53,883 INFO L270 CegarLoopResult]: At program point L24-2(lines 23 29) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 1) (<= (+ (* 4294967296 (div ULTIMATE.start_main_~y~0 4294967296)) 1) ULTIMATE.start_main_~y~0)) [2020-11-28 03:02:53,884 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 03:02:53,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:53 BoogieIcfgContainer [2020-11-28 03:02:53,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:53,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:53,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:53,912 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:53,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:52" (3/4) ... [2020-11-28 03:02:53,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:02:53,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:02:53,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:02:53,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:53,939 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:53,998 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f9d893de-252d-4de0-bf35-8fd76bd5774b/bin/uautomizer/witness.graphml [2020-11-28 03:02:53,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:54,000 INFO L168 Benchmark]: Toolchain (without parser) took 2526.40 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 65.4 MB in the beginning and 92.0 MB in the end (delta: -26.5 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:54,001 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:54,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 72.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:54,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.81 ms. Allocated memory is still 94.4 MB. Free memory was 72.0 MB in the beginning and 70.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:54,003 INFO L168 Benchmark]: Boogie Preprocessor took 34.43 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.4 MB in the end (delta: 892.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:54,004 INFO L168 Benchmark]: RCFGBuilder took 342.65 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 58.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:54,005 INFO L168 Benchmark]: TraceAbstraction took 1664.97 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 57.7 MB in the beginning and 54.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:54,006 INFO L168 Benchmark]: Witness Printer took 87.09 ms. Allocated memory is still 115.3 MB. Free memory was 54.5 MB in the beginning and 92.0 MB in the end (delta: -37.5 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:54,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 72.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.81 ms. Allocated memory is still 94.4 MB. Free memory was 72.0 MB in the beginning and 70.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.43 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.4 MB in the end (delta: 892.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.65 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 58.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1664.97 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 57.7 MB in the beginning and 54.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * Witness Printer took 87.09 ms. Allocated memory is still 115.3 MB. Free memory was 54.5 MB in the beginning and 92.0 MB in the end (delta: -37.5 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 23]: Loop Invariant Derived loop invariant: x == 1 && 4294967296 * (y / 4294967296) + 1 <= y - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 9 SDslu, 13 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 5 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 712 SizeOfPredicates, 4 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...