./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.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_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/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 ff8bf597c44bf4fad2da445c30313c8319221d6a ..................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:12,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:12,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:12,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:12,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:12,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:12,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:12,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:12,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:12,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:12,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:12,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:12,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:12,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:12,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:12,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:12,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:12,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:12,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:12,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:12,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:12,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:12,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:12,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:12,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:12,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:12,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:12,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:12,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:12,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:12,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:12,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:12,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:12,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:12,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:12,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:12,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:12,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:12,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:12,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:12,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:12,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:12,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:12,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:12,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:12,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:12,776 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:12,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:12,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:12,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:12,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:12,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:12,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:12,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:12,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:12,779 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:12,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:12,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:12,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:12,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:12,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:12,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:12,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:12,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:12,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:12,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:12,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:12,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:12,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:12,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:12,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:12,784 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_54f8cfef-0746-413e-8896-083f0ec2dd1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff8bf597c44bf4fad2da445c30313c8319221d6a [2020-11-28 02:57:13,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:13,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:13,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:13,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:13,040 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:13,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2020-11-28 02:57:13,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/data/ae24b50e2/17fb4467628747a98db5603fc2423187/FLAG8a9f0a1ad [2020-11-28 02:57:13,699 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:13,699 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2020-11-28 02:57:13,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/data/ae24b50e2/17fb4467628747a98db5603fc2423187/FLAG8a9f0a1ad [2020-11-28 02:57:14,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/data/ae24b50e2/17fb4467628747a98db5603fc2423187 [2020-11-28 02:57:14,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:14,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:14,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:14,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:14,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:14,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea6c77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14, skipping insertion in model container [2020-11-28 02:57:14,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:14,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:14,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:14,295 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:14,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:14,328 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:14,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14 WrapperNode [2020-11-28 02:57:14,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:14,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:14,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:14,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:14,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:14,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:14,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:14,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:14,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:14,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:14,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:14,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:14,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:14,894 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:14,895 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 02:57:14,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:14 BoogieIcfgContainer [2020-11-28 02:57:14,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:14,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:14,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:14,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:14,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:14" (1/3) ... [2020-11-28 02:57:14,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a9d139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:14, skipping insertion in model container [2020-11-28 02:57:14,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (2/3) ... [2020-11-28 02:57:14,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a9d139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:14, skipping insertion in model container [2020-11-28 02:57:14,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:14" (3/3) ... [2020-11-28 02:57:14,909 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-11-28 02:57:14,920 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:14,923 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:57:14,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:57:14,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:14,974 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:14,975 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:14,975 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:14,975 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:14,975 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:14,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:14,975 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 02:57:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:14,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:14,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:14,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash -589328979, now seen corresponding path program 1 times [2020-11-28 02:57:15,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:15,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409592543] [2020-11-28 02:57:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:15,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409592543] [2020-11-28 02:57:15,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:15,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:15,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809636162] [2020-11-28 02:57:15,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:15,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:15,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:15,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:15,272 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-11-28 02:57:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:15,374 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-11-28 02:57:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:15,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 02:57:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:15,392 INFO L225 Difference]: With dead ends: 45 [2020-11-28 02:57:15,393 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 02:57:15,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 02:57:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-28 02:57:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 02:57:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 02:57:15,436 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2020-11-28 02:57:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:15,437 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 02:57:15,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 02:57:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:15,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:15,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:15,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:15,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:15,443 INFO L82 PathProgramCache]: Analyzing trace with hash 976013968, now seen corresponding path program 1 times [2020-11-28 02:57:15,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:15,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327332164] [2020-11-28 02:57:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:15,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327332164] [2020-11-28 02:57:15,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:15,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:15,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262400801] [2020-11-28 02:57:15,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:15,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:15,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:15,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:15,552 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-11-28 02:57:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:15,625 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 02:57:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:15,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 02:57:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:15,626 INFO L225 Difference]: With dead ends: 22 [2020-11-28 02:57:15,626 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 02:57:15,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 02:57:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-28 02:57:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 02:57:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 02:57:15,633 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-11-28 02:57:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:15,633 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 02:57:15,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 02:57:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:57:15,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:15,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:15,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:15,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1941679302, now seen corresponding path program 1 times [2020-11-28 02:57:15,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:15,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160128176] [2020-11-28 02:57:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:15,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160128176] [2020-11-28 02:57:15,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711444056] [2020-11-28 02:57:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:15,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:57:15,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:15,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:15,924 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:15,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:15,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-11-28 02:57:15,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064805202] [2020-11-28 02:57:15,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:57:15,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:57:15,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:57:15,997 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2020-11-28 02:57:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:16,158 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-28 02:57:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:57:16,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-11-28 02:57:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:16,160 INFO L225 Difference]: With dead ends: 28 [2020-11-28 02:57:16,161 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 02:57:16,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:57:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 02:57:16,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-11-28 02:57:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 02:57:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-28 02:57:16,167 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-11-28 02:57:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:16,167 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-28 02:57:16,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:57:16,170 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-28 02:57:16,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:57:16,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:16,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:16,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 02:57:16,388 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:16,388 INFO L82 PathProgramCache]: Analyzing trace with hash 105888848, now seen corresponding path program 2 times [2020-11-28 02:57:16,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:16,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106268883] [2020-11-28 02:57:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 02:57:16,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106268883] [2020-11-28 02:57:16,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395815633] [2020-11-28 02:57:16,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:16,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 02:57:16,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:16,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:57:16,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:16,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 02:57:16,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:16,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:57:16,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568494013] [2020-11-28 02:57:16,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:16,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:16,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:16,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:16,575 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-11-28 02:57:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:16,634 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 02:57:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:16,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-28 02:57:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:16,635 INFO L225 Difference]: With dead ends: 22 [2020-11-28 02:57:16,635 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:16,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:57:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:16,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-28 02:57:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:16,637 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:16,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:16,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:16,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:16,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:57:17,039 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,039 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-28 02:57:17,039 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-28 02:57:17,039 INFO L277 CegarLoopResult]: At program point L44(lines 25 45) the Hoare annotation is: true [2020-11-28 02:57:17,039 INFO L277 CegarLoopResult]: At program point L44-1(lines 24 45) the Hoare annotation is: true [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,040 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,041 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-28 02:57:17,041 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-28 02:57:17,041 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:57:17,041 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-11-28 02:57:17,041 INFO L270 CegarLoopResult]: At program point L38-2(lines 38 43) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~glob2_p_off~0)) (.cse1 (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) (.cse2 (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0))) (or (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2) (and (<= ULTIMATE.start_main_~glob2_p_off~0 0) .cse0 .cse1 .cse2))) [2020-11-28 02:57:17,041 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-28 02:57:17,041 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0)) [2020-11-28 02:57:17,041 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-28 02:57:17,042 INFO L270 CegarLoopResult]: At program point L18-5(lines 1 45) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0)) [2020-11-28 02:57:17,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:17 BoogieIcfgContainer [2020-11-28 02:57:17,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:17,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:17,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:17,068 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:17,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:14" (3/4) ... [2020-11-28 02:57:17,071 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:17,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 02:57:17,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:17,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:17,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:17,127 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_54f8cfef-0746-413e-8896-083f0ec2dd1e/bin/uautomizer/witness.graphml [2020-11-28 02:57:17,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:17,129 INFO L168 Benchmark]: Toolchain (without parser) took 3066.52 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 63.9 MB in the beginning and 94.2 MB in the end (delta: -30.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:17,130 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 94.4 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:17,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.36 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 63.6 MB in the beginning and 98.3 MB in the end (delta: -34.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:17,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.84 ms. Allocated memory is still 121.6 MB. Free memory was 98.3 MB in the beginning and 96.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:17,132 INFO L168 Benchmark]: Boogie Preprocessor took 19.38 ms. Allocated memory is still 121.6 MB. Free memory was 96.8 MB in the beginning and 95.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:17,132 INFO L168 Benchmark]: RCFGBuilder took 513.52 ms. Allocated memory is still 121.6 MB. Free memory was 95.6 MB in the beginning and 83.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:17,133 INFO L168 Benchmark]: TraceAbstraction took 2166.42 ms. Allocated memory is still 121.6 MB. Free memory was 83.0 MB in the beginning and 97.4 MB in the end (delta: -14.4 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:17,133 INFO L168 Benchmark]: Witness Printer took 60.38 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 94.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:17,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 94.4 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.36 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 63.6 MB in the beginning and 98.3 MB in the end (delta: -34.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.84 ms. Allocated memory is still 121.6 MB. Free memory was 98.3 MB in the beginning and 96.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.38 ms. Allocated memory is still 121.6 MB. Free memory was 96.8 MB in the beginning and 95.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 513.52 ms. Allocated memory is still 121.6 MB. Free memory was 95.6 MB in the beginning and 83.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2166.42 ms. Allocated memory is still 121.6 MB. Free memory was 83.0 MB in the beginning and 97.4 MB in the end (delta: -14.4 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.38 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 94.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 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: 17]: Loop Invariant Derived loop invariant: (((!(0 == cond) && 0 <= glob2_p_off) && glob2_pathlim_off <= MAXPATHLEN) && glob2_p_off <= MAXPATHLEN) && 1 <= MAXPATHLEN - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((0 <= glob2_p_off && 1 <= cond) && glob2_pathlim_off <= MAXPATHLEN) && glob2_p_off <= MAXPATHLEN) && 1 <= MAXPATHLEN - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((0 <= glob2_p_off && 1 <= cond) && glob2_pathlim_off <= MAXPATHLEN) && 1 <= MAXPATHLEN) || (((glob2_p_off <= 0 && 0 <= glob2_p_off) && glob2_pathlim_off <= MAXPATHLEN) && 1 <= MAXPATHLEN) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 54 SDslu, 78 SDs, 0 SdLazy, 80 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s 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, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 62 HoareAnnotationTreeSize, 5 FomulaSimplifications, 228 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 94 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 4009 SizeOfPredicates, 13 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/34 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...