./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.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_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/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 6e3d50e5c95506905bfc503f1fcedc0356db6a24 .................................................................................................................................................................................................................................................................................................................................................................................................................... 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 21:56:32,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:56:32,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:56:32,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:56:32,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:56:32,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:56:32,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:56:32,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:56:32,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:56:32,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:56:32,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:56:32,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:56:32,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:56:32,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:56:32,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:56:32,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:56:32,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:56:32,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:56:32,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:56:32,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:56:32,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:56:32,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:56:32,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:56:32,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:56:32,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:56:32,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:56:32,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:56:32,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:56:32,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:56:32,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:56:32,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:56:32,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:56:32,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:56:32,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:56:32,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:56:32,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:56:32,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:56:32,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:56:32,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:56:32,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:56:32,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:56:32,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:56:32,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:56:32,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:56:32,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:56:32,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:56:32,757 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:56:32,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:56:32,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:56:32,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:56:32,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:56:32,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:56:32,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:56:32,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:56:32,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:56:32,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:56:32,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:56:32,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:56:32,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:56:32,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:56:32,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:56:32,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:56:32,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:56:32,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:56:32,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:56:32,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:56:32,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:56:32,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:56:32,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:56:32,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:56:32,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:56:32,768 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_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3d50e5c95506905bfc503f1fcedc0356db6a24 [2020-11-29 21:56:33,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:56:33,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:56:33,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:56:33,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:56:33,156 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:56:33,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-29 21:56:33,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/data/c026fda35/0f4f33e657214fee88596dbbf896d7b6/FLAG620e1faf1 [2020-11-29 21:56:33,801 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:56:33,802 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-29 21:56:33,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/data/c026fda35/0f4f33e657214fee88596dbbf896d7b6/FLAG620e1faf1 [2020-11-29 21:56:34,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/data/c026fda35/0f4f33e657214fee88596dbbf896d7b6 [2020-11-29 21:56:34,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:56:34,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:56:34,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:56:34,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:56:34,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:56:34,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cfd20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34, skipping insertion in model container [2020-11-29 21:56:34,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:56:34,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:56:34,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:56:34,380 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:56:34,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:56:34,414 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:56:34,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34 WrapperNode [2020-11-29 21:56:34,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:56:34,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:56:34,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:56:34,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:56:34,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:56:34,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:56:34,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:56:34,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:56:34,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... [2020-11-29 21:56:34,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:56:34,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:56:34,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:56:34,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:56:34,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/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 21:56:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:56:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:56:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:56:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:56:34,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:56:34,800 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 21:56:34,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:56:34 BoogieIcfgContainer [2020-11-29 21:56:34,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:56:34,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:56:34,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:56:34,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:56:34,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:56:34" (1/3) ... [2020-11-29 21:56:34,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efe2554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:56:34, skipping insertion in model container [2020-11-29 21:56:34,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:34" (2/3) ... [2020-11-29 21:56:34,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efe2554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:56:34, skipping insertion in model container [2020-11-29 21:56:34,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:56:34" (3/3) ... [2020-11-29 21:56:34,812 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2020-11-29 21:56:34,829 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:56:34,834 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 21:56:34,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 21:56:34,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:56:34,901 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:56:34,902 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:56:34,902 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:56:34,902 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:56:34,902 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:56:34,902 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:56:34,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:56:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-29 21:56:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:56:34,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:34,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:34,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:56:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:34,949 INFO L82 PathProgramCache]: Analyzing trace with hash 185199154, now seen corresponding path program 1 times [2020-11-29 21:56:34,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:34,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285178699] [2020-11-29 21:56:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:35,177 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 21:56:35,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285178699] [2020-11-29 21:56:35,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:35,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:56:35,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294663620] [2020-11-29 21:56:35,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:56:35,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:35,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:56:35,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:56:35,210 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-29 21:56:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:35,229 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-11-29 21:56:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:56:35,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 21:56:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:35,245 INFO L225 Difference]: With dead ends: 22 [2020-11-29 21:56:35,246 INFO L226 Difference]: Without dead ends: 9 [2020-11-29 21:56:35,256 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 21:56:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-29 21:56:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 21:56:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 21:56:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-29 21:56:35,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-11-29 21:56:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:35,298 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-29 21:56:35,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:56:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-29 21:56:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:56:35,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:35,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:35,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:56:35,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:56:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash 181505070, now seen corresponding path program 1 times [2020-11-29 21:56:35,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:35,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251185711] [2020-11-29 21:56:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:35,436 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 21:56:35,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251185711] [2020-11-29 21:56:35,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:35,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:56:35,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859877859] [2020-11-29 21:56:35,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:56:35,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:35,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:56:35,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:56:35,440 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-11-29 21:56:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:35,571 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-29 21:56:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:56:35,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 21:56:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:35,574 INFO L225 Difference]: With dead ends: 15 [2020-11-29 21:56:35,574 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 21:56:35,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:56:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 21:56:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 21:56:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 21:56:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 21:56:35,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-29 21:56:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:35,580 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 21:56:35,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:56:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 21:56:35,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:56:35,580 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:35,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:35,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:56:35,581 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:56:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1383312870, now seen corresponding path program 1 times [2020-11-29 21:56:35,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:35,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933068193] [2020-11-29 21:56:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:35,709 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 21:56:35,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933068193] [2020-11-29 21:56:35,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123663846] [2020-11-29 21:56:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/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 21:56:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:35,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:56:35,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:35,857 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:35,863 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:35,884 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 21:56:35,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:56:35,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 21:56:35,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588794594] [2020-11-29 21:56:35,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:56:35,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:35,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:56:35,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:56:35,888 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2020-11-29 21:56:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:35,943 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 21:56:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:56:35,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-29 21:56:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:35,946 INFO L225 Difference]: With dead ends: 16 [2020-11-29 21:56:35,946 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 21:56:35,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:56:35,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 21:56:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 21:56:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 21:56:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 21:56:35,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 21:56:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:35,955 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 21:56:35,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:56:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 21:56:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:56:35,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:35,959 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:36,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 21:56:36,180 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:56:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:36,181 INFO L82 PathProgramCache]: Analyzing trace with hash -15350994, now seen corresponding path program 2 times [2020-11-29 21:56:36,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:36,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972787210] [2020-11-29 21:56:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:36,297 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 21:56:36,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972787210] [2020-11-29 21:56:36,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287045552] [2020-11-29 21:56:36,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/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 21:56:36,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:56:36,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:56:36,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:56:36,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:36,470 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:36,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:36,515 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 21:56:36,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:56:36,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-11-29 21:56:36,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413284596] [2020-11-29 21:56:36,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:56:36,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:36,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:56:36,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:56:36,519 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2020-11-29 21:56:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:36,623 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-29 21:56:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:56:36,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-11-29 21:56:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:36,623 INFO L225 Difference]: With dead ends: 11 [2020-11-29 21:56:36,624 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:56:36,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:56:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:56:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:56:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:56:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:56:36,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-29 21:56:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:36,626 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:56:36,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:56:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:56:36,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:56:36,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:36,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:56:36,892 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:56:36,892 INFO L277 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-11-29 21:56:36,893 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-29 21:56:36,893 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 21:56:36,893 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 21:56:36,893 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-29 21:56:36,893 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:56:36,893 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:56:36,893 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:56:36,894 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-29 21:56:36,894 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= 0 ULTIMATE.start_main_~k~0)) [2020-11-29 21:56:36,894 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 27) no Hoare annotation was computed. [2020-11-29 21:56:36,894 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 21:56:36,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:56:36 BoogieIcfgContainer [2020-11-29 21:56:36,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:56:36,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:56:36,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:56:36,913 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:56:36,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:56:34" (3/4) ... [2020-11-29 21:56:36,917 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:56:36,929 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 21:56:36,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:56:36,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:56:36,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:56:36,975 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d7c74d2e-08e3-43f8-b8fc-28171b9ae310/bin/uautomizer/witness.graphml [2020-11-29 21:56:36,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:56:36,977 INFO L168 Benchmark]: Toolchain (without parser) took 2826.19 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 70.8 MB in the beginning and 81.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:56:36,978 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:56:36,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.76 ms. Allocated memory is still 92.3 MB. Free memory was 70.6 MB in the beginning and 61.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:56:36,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.41 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:56:36,980 INFO L168 Benchmark]: Boogie Preprocessor took 25.54 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 58.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:56:36,981 INFO L168 Benchmark]: RCFGBuilder took 314.74 ms. Allocated memory is still 92.3 MB. Free memory was 58.8 MB in the beginning and 69.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:56:36,982 INFO L168 Benchmark]: TraceAbstraction took 2108.18 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 69.3 MB in the beginning and 83.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:56:36,982 INFO L168 Benchmark]: Witness Printer took 62.50 ms. Allocated memory is still 115.3 MB. Free memory was 83.7 MB in the beginning and 81.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:56:36,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.76 ms. Allocated memory is still 92.3 MB. Free memory was 70.6 MB in the beginning and 61.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.41 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.54 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 58.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 314.74 ms. Allocated memory is still 92.3 MB. Free memory was 58.8 MB in the beginning and 69.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2108.18 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 69.3 MB in the beginning and 83.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Witness Printer took 62.50 ms. Allocated memory is still 115.3 MB. Free memory was 83.7 MB in the beginning and 81.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: n <= k + j && 0 <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 4 SDslu, 30 SDs, 0 SdLazy, 36 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 899 SizeOfPredicates, 8 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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...