./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006.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_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/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 24166db6f541d35bbfd02c8f0491b41b1a3db1de ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:07:18,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:07:18,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:07:18,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:07:18,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:07:18,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:07:18,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:07:18,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:07:18,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:07:18,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:07:18,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:07:18,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:07:18,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:07:18,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:07:18,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:07:18,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:07:18,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:07:18,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:07:18,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:07:18,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:07:18,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:07:18,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:07:18,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:07:18,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:07:18,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:07:18,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:07:18,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:07:18,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:07:18,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:07:18,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:07:18,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:07:18,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:07:18,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:07:18,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:07:18,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:07:18,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:07:18,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:07:18,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:07:18,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:07:18,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:07:18,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:07:18,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:07:18,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:07:18,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:07:18,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:07:18,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:07:18,626 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:07:18,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:07:18,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:07:18,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:07:18,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:07:18,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:07:18,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:07:18,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:07:18,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:07:18,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:07:18,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:07:18,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:07:18,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:07:18,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:07:18,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:07:18,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:07:18,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:07:18,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:07:18,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:07:18,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:07:18,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:07:18,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:07:18,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:07:18,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:07:18,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:07:18,632 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_3d109d7f-8821-41d6-97b2-0371ee8430f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24166db6f541d35bbfd02c8f0491b41b1a3db1de [2020-11-29 20:07:18,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:07:18,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:07:18,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:07:18,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:07:18,945 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:07:18,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/../../sv-benchmarks/c/loop-lit/jm2006.i [2020-11-29 20:07:19,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/data/741aa033c/fee3eeb5af09489b94cb4fc86a7f3a40/FLAGc0846f889 [2020-11-29 20:07:19,510 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:07:19,511 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/sv-benchmarks/c/loop-lit/jm2006.i [2020-11-29 20:07:19,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/data/741aa033c/fee3eeb5af09489b94cb4fc86a7f3a40/FLAGc0846f889 [2020-11-29 20:07:19,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/data/741aa033c/fee3eeb5af09489b94cb4fc86a7f3a40 [2020-11-29 20:07:19,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:07:19,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:07:19,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:07:19,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:07:19,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:07:19,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:07:19" (1/1) ... [2020-11-29 20:07:19,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6caaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:19, skipping insertion in model container [2020-11-29 20:07:19,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:07:19" (1/1) ... [2020-11-29 20:07:19,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:07:19,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:07:20,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:07:20,126 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:07:20,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:07:20,164 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:07:20,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20 WrapperNode [2020-11-29 20:07:20,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:07:20,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:07:20,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:07:20,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:07:20,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:07:20,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:07:20,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:07:20,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:07:20,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... [2020-11-29 20:07:20,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:07:20,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:07:20,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:07:20,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:07:20,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/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 20:07:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:07:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:07:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:07:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:07:20,581 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:07:20,581 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:07:20,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:20 BoogieIcfgContainer [2020-11-29 20:07:20,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:07:20,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:07:20,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:07:20,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:07:20,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:07:19" (1/3) ... [2020-11-29 20:07:20,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3360f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:07:20, skipping insertion in model container [2020-11-29 20:07:20,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:20" (2/3) ... [2020-11-29 20:07:20,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3360f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:07:20, skipping insertion in model container [2020-11-29 20:07:20,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:20" (3/3) ... [2020-11-29 20:07:20,619 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-11-29 20:07:20,642 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:07:20,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:07:20,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:07:20,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:07:20,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:07:20,713 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:07:20,713 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:07:20,715 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:07:20,717 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:07:20,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:07:20,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:07:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 20:07:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:07:20,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:20,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:20,756 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1448112267, now seen corresponding path program 1 times [2020-11-29 20:07:20,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:20,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580760856] [2020-11-29 20:07:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:20,995 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 20:07:20,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580760856] [2020-11-29 20:07:20,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:20,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:07:21,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474711853] [2020-11-29 20:07:21,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:07:21,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:07:21,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:07:21,028 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-29 20:07:21,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:21,047 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2020-11-29 20:07:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:07:21,049 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 20:07:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:21,062 INFO L225 Difference]: With dead ends: 25 [2020-11-29 20:07:21,062 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 20:07:21,077 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 20:07:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 20:07:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:07:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:07:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 20:07:21,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-11-29 20:07:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:21,143 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 20:07:21,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:07:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 20:07:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:07:21,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:21,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:21,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:07:21,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:21,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1333595663, now seen corresponding path program 1 times [2020-11-29 20:07:21,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:21,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694888183] [2020-11-29 20:07:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:21,465 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-11-29 20:07:21,484 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 20:07:21,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694888183] [2020-11-29 20:07:21,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:21,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:07:21,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42214518] [2020-11-29 20:07:21,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:07:21,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:21,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:07:21,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:07:21,488 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2020-11-29 20:07:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:21,673 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-29 20:07:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:07:21,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-29 20:07:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:21,676 INFO L225 Difference]: With dead ends: 17 [2020-11-29 20:07:21,676 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 20:07:21,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:07:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 20:07:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:07:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:07:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 20:07:21,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 20:07:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:21,681 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 20:07:21,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:07:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 20:07:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:07:21,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:21,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:21,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:07:21,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash -65068201, now seen corresponding path program 1 times [2020-11-29 20:07:21,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:21,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508989581] [2020-11-29 20:07:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:21,890 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 20:07:21,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508989581] [2020-11-29 20:07:21,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253097210] [2020-11-29 20:07:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/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 20:07:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:21,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:07:21,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:07:22,126 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:07:22,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:07:22,183 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 20:07:22,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:07:22,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-11-29 20:07:22,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882881389] [2020-11-29 20:07:22,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:07:22,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:22,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:07:22,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:07:22,186 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2020-11-29 20:07:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:22,299 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-29 20:07:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:07:22,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-11-29 20:07:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:22,302 INFO L225 Difference]: With dead ends: 18 [2020-11-29 20:07:22,302 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 20:07:22,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:07:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 20:07:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 20:07:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 20:07:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-29 20:07:22,306 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-11-29 20:07:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:22,306 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-29 20:07:22,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:07:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-29 20:07:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:07:22,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:22,307 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:22,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:07:22,508 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:22,509 INFO L82 PathProgramCache]: Analyzing trace with hash -473975025, now seen corresponding path program 2 times [2020-11-29 20:07:22,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:22,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557283046] [2020-11-29 20:07:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:22,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557283046] [2020-11-29 20:07:22,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175971958] [2020-11-29 20:07:22,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/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 [2020-11-29 20:07:22,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:07:22,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:07:22,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 20:07:22,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:07:22,797 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:07:22,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:07:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:22,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:07:22,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-11-29 20:07:22,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032688785] [2020-11-29 20:07:22,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:07:22,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:22,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:07:22,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:07:22,829 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2020-11-29 20:07:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:23,054 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-29 20:07:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:07:23,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-29 20:07:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:23,057 INFO L225 Difference]: With dead ends: 22 [2020-11-29 20:07:23,057 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 20:07:23,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:07:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 20:07:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 20:07:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 20:07:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-29 20:07:23,063 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-11-29 20:07:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:23,063 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-29 20:07:23,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:07:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-29 20:07:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:07:23,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:23,064 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:23,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:07:23,265 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:23,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1912348687, now seen corresponding path program 3 times [2020-11-29 20:07:23,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:23,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115665726] [2020-11-29 20:07:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:07:23,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115665726] [2020-11-29 20:07:23,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323713130] [2020-11-29 20:07:23,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:07:23,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 20:07:23,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:07:23,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 20:07:23,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:07:23,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:07:23,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:07:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:23,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:07:23,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2020-11-29 20:07:23,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41768818] [2020-11-29 20:07:23,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:07:23,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:07:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:07:23,761 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2020-11-29 20:07:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:23,978 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-11-29 20:07:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:07:23,978 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-11-29 20:07:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:23,979 INFO L225 Difference]: With dead ends: 17 [2020-11-29 20:07:23,979 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:07:23,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:07:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:07:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:07:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:07:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:07:23,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-29 20:07:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:23,981 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:07:23,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:07:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:07:23,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:07:24,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:07:24,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:07:24,294 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:07:24,295 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~j~0)) (.cse0 (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-29 20:07:24,295 INFO L274 CegarLoopResult]: For program point L31-3(lines 24 39) no Hoare annotation was computed. [2020-11-29 20:07:24,295 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-29 20:07:24,295 INFO L277 CegarLoopResult]: At program point L38(lines 24 39) the Hoare annotation is: true [2020-11-29 20:07:24,295 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:07:24,295 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:07:24,296 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:07:24,296 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-29 20:07:24,296 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 20:07:24,296 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-29 20:07:24,296 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:07:24,296 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 20:07:24,297 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-29 20:07:24,299 INFO L277 CegarLoopResult]: At program point L35(lines 35 37) the Hoare annotation is: true [2020-11-29 20:07:24,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:07:24 BoogieIcfgContainer [2020-11-29 20:07:24,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:07:24,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:07:24,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:07:24,321 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:07:24,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:20" (3/4) ... [2020-11-29 20:07:24,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:07:24,338 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:07:24,339 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:07:24,339 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:07:24,339 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:07:24,394 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3d109d7f-8821-41d6-97b2-0371ee8430f7/bin/uautomizer/witness.graphml [2020-11-29 20:07:24,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:07:24,395 INFO L168 Benchmark]: Toolchain (without parser) took 4532.95 ms. Allocated memory is still 136.3 MB. Free memory was 109.4 MB in the beginning and 47.2 MB in the end (delta: 62.2 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:24,396 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 98.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:07:24,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.09 ms. Allocated memory is still 136.3 MB. Free memory was 108.9 MB in the beginning and 112.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:24,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 136.3 MB. Free memory was 112.6 MB in the beginning and 111.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:24,398 INFO L168 Benchmark]: Boogie Preprocessor took 25.74 ms. Allocated memory is still 136.3 MB. Free memory was 111.0 MB in the beginning and 109.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:07:24,398 INFO L168 Benchmark]: RCFGBuilder took 349.37 ms. Allocated memory is still 136.3 MB. Free memory was 109.8 MB in the beginning and 97.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:24,399 INFO L168 Benchmark]: TraceAbstraction took 3719.06 ms. Allocated memory is still 136.3 MB. Free memory was 97.3 MB in the beginning and 49.4 MB in the end (delta: 47.9 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:24,399 INFO L168 Benchmark]: Witness Printer took 73.95 ms. Allocated memory is still 136.3 MB. Free memory was 49.4 MB in the beginning and 47.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:24,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 98.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.09 ms. Allocated memory is still 136.3 MB. Free memory was 108.9 MB in the beginning and 112.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 136.3 MB. Free memory was 112.6 MB in the beginning and 111.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.74 ms. Allocated memory is still 136.3 MB. Free memory was 111.0 MB in the beginning and 109.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 349.37 ms. Allocated memory is still 136.3 MB. Free memory was 109.8 MB in the beginning and 97.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3719.06 ms. Allocated memory is still 136.3 MB. Free memory was 97.3 MB in the beginning and 49.4 MB in the end (delta: 47.9 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. * Witness Printer took 73.95 ms. Allocated memory is still 136.3 MB. Free memory was 49.4 MB in the beginning and 47.2 MB in the end (delta: 2.2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: y + i <= x + j && x + j <= y + i - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 24 SDslu, 92 SDs, 0 SdLazy, 163 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 17 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 5363 SizeOfPredicates, 18 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/28 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...