./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark14_linear.i --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_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark14_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/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 508cc4537bb2aef4b1661457509d80364f4d0fc9 .................................................................................................................................................................................................................................................................................................................. 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 03:08:12,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:08:12,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:08:12,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:08:12,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:08:12,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:08:12,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:08:12,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:08:12,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:08:12,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:08:12,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:08:12,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:08:12,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:08:12,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:08:12,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:08:12,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:08:12,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:08:12,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:08:12,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:08:12,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:08:12,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:08:12,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:08:12,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:08:12,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:08:12,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:08:12,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:08:12,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:08:12,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:08:12,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:08:12,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:08:12,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:08:12,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:08:12,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:08:12,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:08:12,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:08:12,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:08:12,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:08:12,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:08:12,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:08:12,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:08:12,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:08:12,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:08:12,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:08:12,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:08:12,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:08:12,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:08:12,853 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:08:12,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:08:12,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:08:12,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:08:12,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:08:12,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:08:12,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:08:12,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:08:12,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:08:12,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:08:12,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:08:12,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:08:12,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:08:12,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:08:12,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:08:12,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:08:12,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:08:12,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:08:12,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:08:12,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:08:12,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:08:12,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:08:12,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:08:12,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:08:12,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:08:12,859 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_3c693fcf-381f-443d-9e43-107a5f7cee7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 508cc4537bb2aef4b1661457509d80364f4d0fc9 [2020-11-28 03:08:13,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:08:13,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:08:13,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:08:13,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:08:13,117 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:08:13,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark14_linear.i [2020-11-28 03:08:13,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/data/51f687099/472478e47213422b92c0478fa2b44e2e/FLAG33792062a [2020-11-28 03:08:13,589 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:08:13,590 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/sv-benchmarks/c/loop-zilu/benchmark14_linear.i [2020-11-28 03:08:13,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/data/51f687099/472478e47213422b92c0478fa2b44e2e/FLAG33792062a [2020-11-28 03:08:14,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/data/51f687099/472478e47213422b92c0478fa2b44e2e [2020-11-28 03:08:14,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:08:14,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:08:14,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:08:14,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:08:14,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:08:14,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c87fd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14, skipping insertion in model container [2020-11-28 03:08:14,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:08:14,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:08:14,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:08:14,211 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:08:14,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:08:14,232 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:08:14,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14 WrapperNode [2020-11-28 03:08:14,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:08:14,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:08:14,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:08:14,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:08:14,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:08:14,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:08:14,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:08:14,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:08:14,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... [2020-11-28 03:08:14,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:08:14,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:08:14,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:08:14,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:08:14,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/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 03:08:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:08:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:08:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:08:14,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:08:14,653 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:08:14,653 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:08:14,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:14 BoogieIcfgContainer [2020-11-28 03:08:14,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:08:14,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:08:14,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:08:14,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:08:14,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:08:14" (1/3) ... [2020-11-28 03:08:14,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35564626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:08:14, skipping insertion in model container [2020-11-28 03:08:14,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:14" (2/3) ... [2020-11-28 03:08:14,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35564626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:08:14, skipping insertion in model container [2020-11-28 03:08:14,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:14" (3/3) ... [2020-11-28 03:08:14,668 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark14_linear.i [2020-11-28 03:08:14,677 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:08:14,680 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:08:14,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:08:14,708 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:08:14,709 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:08:14,709 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:08:14,709 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:08:14,709 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:08:14,709 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:08:14,709 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:08:14,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:08:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 03:08:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:08:14,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:14,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:14,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:14,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:14,734 INFO L82 PathProgramCache]: Analyzing trace with hash 185199154, now seen corresponding path program 1 times [2020-11-28 03:08:14,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:14,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106729440] [2020-11-28 03:08:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:14,866 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 03:08:14,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106729440] [2020-11-28 03:08:14,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:14,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:08:14,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209768446] [2020-11-28 03:08:14,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:08:14,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:14,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:08:14,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:08:14,887 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 03:08:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:14,900 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-11-28 03:08:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:08:14,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:08:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:14,909 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:08:14,909 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:08:14,912 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 03:08:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:08:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:08:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:08:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 03:08:14,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-11-28 03:08:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:14,940 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 03:08:14,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:08:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 03:08:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:08:14,941 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:14,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:14,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:08:14,942 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash 181505070, now seen corresponding path program 1 times [2020-11-28 03:08:14,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:14,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597349057] [2020-11-28 03:08:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:15,107 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 5 [2020-11-28 03:08:15,126 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 03:08:15,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597349057] [2020-11-28 03:08:15,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:15,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:08:15,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107968870] [2020-11-28 03:08:15,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:08:15,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:15,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:08:15,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:08:15,130 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 03:08:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:15,174 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 03:08:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:08:15,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:08:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:15,174 INFO L225 Difference]: With dead ends: 9 [2020-11-28 03:08:15,174 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:08:15,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:15,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:08:15,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:08:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:08:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:08:15,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-28 03:08:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:15,177 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:08:15,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:08:15,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:08:15,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:08:15,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:08:15,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:08:15,191 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:08:15,191 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-28 03:08:15,191 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 03:08:15,191 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 03:08:15,192 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-28 03:08:15,192 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:08:15,192 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:08:15,192 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:08:15,192 INFO L277 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2020-11-28 03:08:15,193 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-28 03:08:15,193 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~i~0 1)) [2020-11-28 03:08:15,193 INFO L274 CegarLoopResult]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2020-11-28 03:08:15,193 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 03:08:15,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:08:15 BoogieIcfgContainer [2020-11-28 03:08:15,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:08:15,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:08:15,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:08:15,209 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:08:15,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:14" (3/4) ... [2020-11-28 03:08:15,213 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:08:15,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:08:15,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:08:15,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:08:15,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:08:15,258 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3c693fcf-381f-443d-9e43-107a5f7cee7c/bin/uautomizer/witness.graphml [2020-11-28 03:08:15,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:08:15,259 INFO L168 Benchmark]: Toolchain (without parser) took 1238.92 ms. Allocated memory is still 107.0 MB. Free memory was 77.0 MB in the beginning and 77.3 MB in the end (delta: -284.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:08:15,260 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:08:15,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.72 ms. Allocated memory is still 107.0 MB. Free memory was 76.8 MB in the beginning and 84.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:15,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.12 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:15,262 INFO L168 Benchmark]: Boogie Preprocessor took 18.03 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:08:15,262 INFO L168 Benchmark]: RCFGBuilder took 336.96 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 71.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:15,263 INFO L168 Benchmark]: TraceAbstraction took 551.92 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 79.4 MB in the end (delta: -8.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:08:15,264 INFO L168 Benchmark]: Witness Printer took 49.66 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 77.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:15,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 207.72 ms. Allocated memory is still 107.0 MB. Free memory was 76.8 MB in the beginning and 84.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.12 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.03 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 336.96 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 71.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 551.92 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 79.4 MB in the end (delta: -8.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 49.66 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 77.3 MB in the end (delta: 2.1 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: 11]: 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 < i + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 4 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...