./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007b.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_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007b.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/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 d6c7a19e50bb32a5896b861b4b348ab0b4232809 ....................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:00:18,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:00:18,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:00:18,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:00:18,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:00:18,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:00:18,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:00:18,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:00:18,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:00:18,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:00:18,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:00:18,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:00:18,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:00:18,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:00:18,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:00:18,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:00:18,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:00:18,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:00:18,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:00:18,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:00:18,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:00:18,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:00:18,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:00:18,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:00:18,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:00:18,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:00:18,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:00:18,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:00:18,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:00:18,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:00:18,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:00:18,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:00:18,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:00:18,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:00:18,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:00:18,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:00:18,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:00:18,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:00:18,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:00:18,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:00:18,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:00:18,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:00:18,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:00:18,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:00:18,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:00:18,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:00:18,735 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:00:18,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:00:18,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:00:18,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:00:18,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:00:18,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:00:18,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:00:18,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:00:18,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:00:18,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:00:18,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:00:18,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:00:18,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:00:18,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:00:18,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:00:18,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:00:18,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:00:18,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:00:18,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:00:18,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:00:18,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:00:18,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:00:18,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:00:18,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:00:18,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:00:18,743 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_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c7a19e50bb32a5896b861b4b348ab0b4232809 [2020-11-29 20:00:19,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:00:19,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:00:19,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:00:19,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:00:19,066 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:00:19,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gj2007b.i [2020-11-29 20:00:19,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/data/6e5f20633/ae572a05e4704956ac9741de4ba3907a/FLAG0567a62c2 [2020-11-29 20:00:19,606 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:00:19,606 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/sv-benchmarks/c/loop-lit/gj2007b.i [2020-11-29 20:00:19,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/data/6e5f20633/ae572a05e4704956ac9741de4ba3907a/FLAG0567a62c2 [2020-11-29 20:00:19,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/data/6e5f20633/ae572a05e4704956ac9741de4ba3907a [2020-11-29 20:00:20,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:00:20,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:00:20,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:20,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:00:20,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:00:20,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdb5297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20, skipping insertion in model container [2020-11-29 20:00:20,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:00:20,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:00:20,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:20,227 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:00:20,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:20,270 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:00:20,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20 WrapperNode [2020-11-29 20:00:20,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:20,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:20,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:00:20,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:00:20,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:20,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:00:20,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:00:20,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:00:20,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... [2020-11-29 20:00:20,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:00:20,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:00:20,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:00:20,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:00:20,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/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 [2020-11-29 20:00:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:00:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:00:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:00:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:00:20,738 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:00:20,739 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 20:00:20,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:20 BoogieIcfgContainer [2020-11-29 20:00:20,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:00:20,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:00:20,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:00:20,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:00:20,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:00:20" (1/3) ... [2020-11-29 20:00:20,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49298296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:20, skipping insertion in model container [2020-11-29 20:00:20,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:20" (2/3) ... [2020-11-29 20:00:20,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49298296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:20, skipping insertion in model container [2020-11-29 20:00:20,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:20" (3/3) ... [2020-11-29 20:00:20,750 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-11-29 20:00:20,763 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:00:20,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 20:00:20,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 20:00:20,839 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:00:20,840 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:00:20,840 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:00:20,840 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:00:20,840 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:00:20,840 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:00:20,840 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:00:20,841 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:00:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-29 20:00:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:00:20,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:20,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:20,876 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:20,882 INFO L82 PathProgramCache]: Analyzing trace with hash 561225128, now seen corresponding path program 1 times [2020-11-29 20:00:20,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:20,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110391856] [2020-11-29 20:00:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:00:21,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110391856] [2020-11-29 20:00:21,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:21,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:00:21,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230696329] [2020-11-29 20:00:21,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:00:21,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:21,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:00:21,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:00:21,042 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-29 20:00:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:21,058 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-11-29 20:00:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:00:21,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 20:00:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:21,067 INFO L225 Difference]: With dead ends: 39 [2020-11-29 20:00:21,067 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 20:00:21,070 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 [2020-11-29 20:00:21,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 20:00:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 20:00:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 20:00:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-29 20:00:21,102 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2020-11-29 20:00:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:21,103 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-29 20:00:21,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:00:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-29 20:00:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:00:21,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:21,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:21,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:00:21,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:21,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:21,105 INFO L82 PathProgramCache]: Analyzing trace with hash 246304467, now seen corresponding path program 1 times [2020-11-29 20:00:21,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:21,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151515599] [2020-11-29 20:00:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:00:21,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151515599] [2020-11-29 20:00:21,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:21,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:00:21,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899510891] [2020-11-29 20:00:21,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:00:21,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:21,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:00:21,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:00:21,215 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2020-11-29 20:00:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:21,345 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-29 20:00:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:00:21,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:00:21,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:21,348 INFO L225 Difference]: With dead ends: 32 [2020-11-29 20:00:21,348 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 20:00:21,349 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 [2020-11-29 20:00:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 20:00:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 20:00:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 20:00:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-29 20:00:21,359 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2020-11-29 20:00:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:21,360 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-29 20:00:21,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:00:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-29 20:00:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:00:21,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:21,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:21,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:00:21,363 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:21,365 INFO L82 PathProgramCache]: Analyzing trace with hash -967617348, now seen corresponding path program 1 times [2020-11-29 20:00:21,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:21,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273056385] [2020-11-29 20:00:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:00:21,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273056385] [2020-11-29 20:00:21,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997961142] [2020-11-29 20:00:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/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 [2020-11-29 20:00:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:21,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:00:21,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:00:21,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:00:21,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:00:21,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-29 20:00:21,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977598117] [2020-11-29 20:00:21,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:00:21,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:21,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:00:21,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:00:21,651 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2020-11-29 20:00:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:21,829 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-11-29 20:00:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:00:21,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-29 20:00:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:21,832 INFO L225 Difference]: With dead ends: 35 [2020-11-29 20:00:21,832 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 20:00:21,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:00:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 20:00:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-11-29 20:00:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 20:00:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-29 20:00:21,839 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2020-11-29 20:00:21,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:21,839 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-29 20:00:21,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:00:21,839 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-29 20:00:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:00:21,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:21,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:22,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:00:22,057 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash -803185864, now seen corresponding path program 1 times [2020-11-29 20:00:22,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:22,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054995732] [2020-11-29 20:00:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:00:22,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054995732] [2020-11-29 20:00:22,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:22,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:00:22,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360889270] [2020-11-29 20:00:22,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:00:22,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:22,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:00:22,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:00:22,136 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2020-11-29 20:00:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:22,237 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-11-29 20:00:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:00:22,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 20:00:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:22,238 INFO L225 Difference]: With dead ends: 21 [2020-11-29 20:00:22,239 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:00:22,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:00:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:00:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:00:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:00:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:00:22,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-29 20:00:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:22,240 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:00:22,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:00:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:00:22,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:00:22,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:00:22,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:00:22,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,362 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-29 20:00:22,362 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-29 20:00:22,362 INFO L277 CegarLoopResult]: At program point L36(lines 24 37) the Hoare annotation is: true [2020-11-29 20:00:22,362 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:00:22,362 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:00:22,363 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:00:22,363 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~x~0))) (or (and (<= 0 ULTIMATE.start_main_~m~0) (<= (+ ULTIMATE.start_main_~m~0 1) ULTIMATE.start_main_~n~0) .cse0) (and .cse0 (= ULTIMATE.start_main_~m~0 0)))) [2020-11-29 20:00:22,363 INFO L274 CegarLoopResult]: For program point L28-3(lines 28 33) no Hoare annotation was computed. [2020-11-29 20:00:22,363 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,363 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,363 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,364 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,364 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,364 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,364 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-29 20:00:22,364 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:00:22,364 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-11-29 20:00:22,365 INFO L274 CegarLoopResult]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2020-11-29 20:00:22,365 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-29 20:00:22,365 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (and (<= 0 ULTIMATE.start_main_~m~0) (<= (+ ULTIMATE.start_main_~m~0 1) ULTIMATE.start_main_~n~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~x~0)) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~m~0 0))) [2020-11-29 20:00:22,365 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-29 20:00:22,365 INFO L277 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: true [2020-11-29 20:00:22,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:00:22 BoogieIcfgContainer [2020-11-29 20:00:22,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:00:22,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:00:22,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:00:22,392 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:00:22,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:20" (3/4) ... [2020-11-29 20:00:22,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:00:22,412 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 20:00:22,412 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:00:22,413 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:00:22,413 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:00:22,486 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2e02f0b4-6356-4fb4-bf3a-7c40ef80fe01/bin/uautomizer/witness.graphml [2020-11-29 20:00:22,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:00:22,488 INFO L168 Benchmark]: Toolchain (without parser) took 2484.19 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 60.4 MB in the beginning and 87.7 MB in the end (delta: -27.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:22,489 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:22,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.98 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 71.6 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:22,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 69.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:22,497 INFO L168 Benchmark]: Boogie Preprocessor took 20.77 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 69.0 MB in the end (delta: 966.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:22,497 INFO L168 Benchmark]: RCFGBuilder took 410.29 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 56.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:22,498 INFO L168 Benchmark]: TraceAbstraction took 1646.71 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 56.9 MB in the beginning and 90.5 MB in the end (delta: -33.7 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:22,498 INFO L168 Benchmark]: Witness Printer took 94.80 ms. Allocated memory is still 127.9 MB. Free memory was 90.5 MB in the beginning and 87.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:22,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.98 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 71.6 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 69.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.77 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 69.0 MB in the end (delta: 966.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 410.29 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 56.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1646.71 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 56.9 MB in the beginning and 90.5 MB in the end (delta: -33.7 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 94.80 ms. Allocated memory is still 127.9 MB. Free memory was 90.5 MB in the beginning and 87.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((0 <= m && m + 1 <= n) && 0 <= x) || (0 <= x && m == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((0 <= m && m + 1 <= n) && 1 <= cond) && 0 <= x) || (!(0 == cond) && m == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 55 SDs, 0 SdLazy, 61 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 46 HoareAnnotationTreeSize, 4 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1227 SizeOfPredicates, 5 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 5/7 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...