./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c --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_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/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 c5e2258de6ff8f26c9f54c35b2950a3b6898eace ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 21:25:24,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:25:24,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:25:24,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:25:24,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:25:24,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:25:24,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:25:24,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:25:24,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:25:24,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:25:24,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:25:24,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:25:24,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:25:24,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:25:24,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:25:24,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:25:24,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:25:24,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:25:24,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:25:24,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:25:24,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:25:24,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:25:24,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:25:24,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:25:24,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:25:24,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:25:24,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:25:24,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:25:24,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:25:24,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:25:24,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:25:24,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:25:24,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:25:24,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:25:24,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:25:24,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:25:24,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:25:24,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:25:24,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:25:24,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:25:24,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:25:24,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:25:24,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:25:24,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:25:24,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:25:24,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:25:24,733 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:25:24,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:25:24,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:25:24,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:25:24,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:25:24,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:25:24,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:25:24,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:25:24,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:25:24,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:25:24,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:25:24,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:25:24,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:25:24,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:25:24,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:25:24,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:25:24,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:25:24,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:25:24,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:25:24,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:25:24,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:25:24,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:25:24,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:25:24,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:25:24,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:25:24,740 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_d3d882d0-0869-4463-aa1c-e26f209d4370/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e2258de6ff8f26c9f54c35b2950a3b6898eace [2020-11-29 21:25:25,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:25:25,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:25:25,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:25:25,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:25:25,138 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:25:25,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c [2020-11-29 21:25:25,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/data/9a5dd3d93/1f46bf95bdae407aa71ac517bff57eb3/FLAG008e33f67 [2020-11-29 21:25:25,899 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:25:25,899 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c [2020-11-29 21:25:25,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/data/9a5dd3d93/1f46bf95bdae407aa71ac517bff57eb3/FLAG008e33f67 [2020-11-29 21:25:26,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/data/9a5dd3d93/1f46bf95bdae407aa71ac517bff57eb3 [2020-11-29 21:25:26,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:25:26,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:25:26,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:25:26,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:25:26,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:25:26,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106b977b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26, skipping insertion in model container [2020-11-29 21:25:26,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:25:26,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:25:26,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:25:26,528 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:25:26,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:25:26,590 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:25:26,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26 WrapperNode [2020-11-29 21:25:26,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:25:26,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:25:26,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:25:26,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:25:26,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:25:26,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:25:26,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:25:26,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:25:26,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... [2020-11-29 21:25:26,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:25:26,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:25:26,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:25:26,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:25:26,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/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 21:25:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:25:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:25:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:25:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:25:27,240 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:25:27,241 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 21:25:27,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:25:27 BoogieIcfgContainer [2020-11-29 21:25:27,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:25:27,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:25:27,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:25:27,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:25:27,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:25:26" (1/3) ... [2020-11-29 21:25:27,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704925e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:25:27, skipping insertion in model container [2020-11-29 21:25:27,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:26" (2/3) ... [2020-11-29 21:25:27,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704925e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:25:27, skipping insertion in model container [2020-11-29 21:25:27,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:25:27" (3/3) ... [2020-11-29 21:25:27,257 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound100.c [2020-11-29 21:25:27,270 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:25:27,276 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 21:25:27,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 21:25:27,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:25:27,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:25:27,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:25:27,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:25:27,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:25:27,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:25:27,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:25:27,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:25:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 21:25:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:25:27,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:27,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:27,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:25:27,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-11-29 21:25:27,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:27,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951532336] [2020-11-29 21:25:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:27,604 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 21:25:27,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951532336] [2020-11-29 21:25:27,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:27,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:25:27,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050544729] [2020-11-29 21:25:27,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:25:27,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:27,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:25:27,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:25:27,637 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-29 21:25:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:27,657 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-11-29 21:25:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:25:27,658 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 21:25:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:27,670 INFO L225 Difference]: With dead ends: 35 [2020-11-29 21:25:27,670 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 21:25:27,677 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 21:25:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 21:25:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 21:25:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 21:25:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-29 21:25:27,724 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-11-29 21:25:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:27,725 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-29 21:25:27,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:25:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-29 21:25:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:25:27,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:27,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:27,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:25:27,729 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:25:27,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:27,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-11-29 21:25:27,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:27,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599540961] [2020-11-29 21:25:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:27,773 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:25:27,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823999900] [2020-11-29 21:25:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/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 21:25:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:27,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:25:27,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:27,993 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 21:25:27,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599540961] [2020-11-29 21:25:27,994 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:25:27,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823999900] [2020-11-29 21:25:27,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:27,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:25:27,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282177290] [2020-11-29 21:25:27,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:25:27,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:27,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:25:27,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:25:27,998 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-29 21:25:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:28,102 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-29 21:25:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:25:28,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 21:25:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:28,104 INFO L225 Difference]: With dead ends: 25 [2020-11-29 21:25:28,104 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 21:25:28,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:25:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 21:25:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-29 21:25:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 21:25:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-29 21:25:28,111 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-11-29 21:25:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:28,112 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-29 21:25:28,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:25:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-29 21:25:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:25:28,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:28,113 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:28,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 21:25:28,314 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:25:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:28,315 INFO L82 PathProgramCache]: Analyzing trace with hash 637918818, now seen corresponding path program 1 times [2020-11-29 21:25:28,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:28,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854222239] [2020-11-29 21:25:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:28,332 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:25:28,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7556626] [2020-11-29 21:25:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/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 21:25:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:28,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:25:28,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:28,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854222239] [2020-11-29 21:25:28,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:25:28,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7556626] [2020-11-29 21:25:28,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:25:28,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:25:28,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191614960] [2020-11-29 21:25:28,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:25:28,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:28,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:25:28,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:25:28,709 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-11-29 21:25:28,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:28,915 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-29 21:25:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:25:28,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 21:25:28,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:28,917 INFO L225 Difference]: With dead ends: 28 [2020-11-29 21:25:28,917 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 21:25:28,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:25:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 21:25:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-29 21:25:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 21:25:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-29 21:25:28,923 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-11-29 21:25:28,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:28,924 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-29 21:25:28,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:25:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-29 21:25:28,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:25:28,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:28,925 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:29,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:25:29,152 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:25:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:29,152 INFO L82 PathProgramCache]: Analyzing trace with hash -984884012, now seen corresponding path program 2 times [2020-11-29 21:25:29,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:29,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353631701] [2020-11-29 21:25:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:29,170 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:25:29,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291495775] [2020-11-29 21:25:29,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/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 21:25:29,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:25:29,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:25:29,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 21:25:29,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:31,365 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0))))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1))) is different from false [2020-11-29 21:25:31,372 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:25:31,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:25:35,772 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 21:25:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-29 21:25:35,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353631701] [2020-11-29 21:25:35,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:25:35,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291495775] [2020-11-29 21:25:35,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:25:35,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 21:25:35,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715937322] [2020-11-29 21:25:35,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:25:35,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:35,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:25:35,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2020-11-29 21:25:35,887 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-11-29 21:25:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:52,012 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-29 21:25:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:25:52,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-29 21:25:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:52,015 INFO L225 Difference]: With dead ends: 31 [2020-11-29 21:25:52,015 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 21:25:52,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=26, Invalid=65, Unknown=3, NotChecked=16, Total=110 [2020-11-29 21:25:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 21:25:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2020-11-29 21:25:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 21:25:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-29 21:25:52,022 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 15 [2020-11-29 21:25:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:52,022 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-29 21:25:52,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:25:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-29 21:25:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:25:52,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:52,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:52,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:25:52,225 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:25:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:52,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1752148488, now seen corresponding path program 1 times [2020-11-29 21:25:52,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:52,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133489821] [2020-11-29 21:25:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:52,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:25:52,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240197925] [2020-11-29 21:25:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:25:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:52,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:25:52,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:52,487 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 21:25:52,491 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:25:52,491 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:25:52,535 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:25:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 21:25:52,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133489821] [2020-11-29 21:25:52,595 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:25:52,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240197925] [2020-11-29 21:25:52,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:52,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:25:52,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171658613] [2020-11-29 21:25:52,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:25:52,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:52,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:25:52,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:25:52,597 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2020-11-29 21:25:53,112 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-29 21:25:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:57,236 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-29 21:25:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:25:57,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:25:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:57,243 INFO L225 Difference]: With dead ends: 23 [2020-11-29 21:25:57,243 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 21:25:57,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:25:57,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 21:25:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 21:25:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 21:25:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-29 21:25:57,249 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-11-29 21:25:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:57,250 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-29 21:25:57,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:25:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-29 21:25:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:25:57,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:57,254 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:57,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:25:57,455 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:25:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:57,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1752108766, now seen corresponding path program 3 times [2020-11-29 21:25:57,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:57,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201165384] [2020-11-29 21:25:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:57,471 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:25:57,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331904676] [2020-11-29 21:25:57,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:25:57,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 21:25:57,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:25:57,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 21:25:57,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:57,802 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2020-11-29 21:25:58,767 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 21:25:58,770 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:25:58,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:26:00,316 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 21:26:07,999 WARN L193 SmtUtils]: Spent 5.85 s on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-11-29 21:26:08,012 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:26:08,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:26:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 21:26:08,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201165384] [2020-11-29 21:26:08,103 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:26:08,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331904676] [2020-11-29 21:26:08,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:26:08,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:26:08,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726124092] [2020-11-29 21:26:08,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:26:08,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:26:08,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:26:08,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:26:08,106 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-11-29 21:26:12,314 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 21:26:16,725 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-29 21:26:22,706 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 21:27:03,168 WARN L193 SmtUtils]: Spent 39.48 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-11-29 21:27:45,847 WARN L193 SmtUtils]: Spent 41.69 s on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-11-29 21:27:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:46,186 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-29 21:27:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:27:46,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-29 21:27:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:46,191 INFO L225 Difference]: With dead ends: 19 [2020-11-29 21:27:46,191 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:27:46,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 98.7s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:27:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:27:46,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:27:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:27:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:27:46,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 21:27:46,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:46,193 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:27:46,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:27:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:27:46,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:27:46,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 21:27:46,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:28:04,658 WARN L193 SmtUtils]: Spent 18.16 s on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-11-29 21:29:28,953 WARN L193 SmtUtils]: Spent 1.40 m on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-11-29 21:29:28,957 INFO L270 CegarLoopResult]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse0 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 1)) (and .cse0 (let ((.cse1 (= ULTIMATE.start_main_~z~0 0))) (or (and (= ULTIMATE.start_main_~y~0 0) .cse1) (let ((.cse3 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0) (let ((.cse4 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 .cse3) .cse4) (+ (* .cse4 ULTIMATE.start_main_~z~0) 1))) (not .cse1)))))))) [2020-11-29 21:29:28,957 INFO L274 CegarLoopResult]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2020-11-29 21:29:28,957 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 21:29:28,957 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 21:29:28,958 INFO L270 CegarLoopResult]: At program point L15-1(lines 38 39) the Hoare annotation is: (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)))) (or (let ((.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) .cse1 (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (let ((.cse3 (div .cse0 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 .cse2) .cse3) (+ (* .cse3 ULTIMATE.start_main_~z~0) 1))) (not (= ULTIMATE.start_main_~z~0 0)) .cse4)) (and .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))) (and .cse1 .cse4 (= ULTIMATE.start_main_~y~0 1)))) [2020-11-29 21:29:28,958 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 21:29:28,958 INFO L277 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: true [2020-11-29 21:29:28,958 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-29 21:29:28,958 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-11-29 21:29:28,958 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:29:28,958 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:29:28,959 INFO L277 CegarLoopResult]: At program point L46(lines 23 47) the Hoare annotation is: true [2020-11-29 21:29:28,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:29:28 BoogieIcfgContainer [2020-11-29 21:29:28,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:29:28,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:29:28,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:29:28,981 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:29:28,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:25:27" (3/4) ... [2020-11-29 21:29:28,984 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:29:28,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 21:29:28,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:29:28,995 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:29:28,995 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:29:29,084 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d3d882d0-0869-4463-aa1c-e26f209d4370/bin/uautomizer/witness.graphml [2020-11-29 21:29:29,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:29:29,088 INFO L168 Benchmark]: Toolchain (without parser) took 242831.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 58.2 MB in the beginning and 55.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:29:29,089 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:29:29,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.30 ms. Allocated memory is still 90.2 MB. Free memory was 58.0 MB in the beginning and 67.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:29:29,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.83 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 65.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:29:29,090 INFO L168 Benchmark]: Boogie Preprocessor took 53.04 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 64.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:29:29,091 INFO L168 Benchmark]: RCFGBuilder took 541.59 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 52.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:29:29,091 INFO L168 Benchmark]: TraceAbstraction took 241732.61 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.1 MB in the beginning and 57.4 MB in the end (delta: -5.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:29:29,092 INFO L168 Benchmark]: Witness Printer took 106.42 ms. Allocated memory is still 109.1 MB. Free memory was 57.4 MB in the beginning and 55.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:29:29,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.30 ms. Allocated memory is still 90.2 MB. Free memory was 58.0 MB in the beginning and 67.2 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 52.83 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 65.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.04 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 64.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 541.59 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 52.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 241732.61 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.1 MB in the beginning and 57.4 MB in the end (delta: -5.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. * Witness Printer took 106.42 ms. Allocated memory is still 109.1 MB. Free memory was 57.4 MB in the beginning and 55.0 MB in the end (delta: 2.4 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: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((1 == cond && z == y) && x == z + 1) || (x == 1 && y == 1)) || (1 == cond && ((y == 0 && z == 0) || ((((y % z == 0 && (x + -1) % z == 0) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)))) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((y % z == 0 && (x + -1) % z == 0) && 1 == cond) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)) && z * y + x == z * x + 1) || (((1 == cond && z == y) && z * y + x == z * x + 1) && x == z + 1)) || ((1 == cond && z * y + x == z * x + 1) && y == 1) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 139.0s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 119.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 102.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 34 SDslu, 130 SDs, 0 SdLazy, 123 SolverSat, 25 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 27.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 108.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 180 HoareAnnotationTreeSize, 4 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 133 FormulaSimplificationTreeSizeReductionInter, 102.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 81 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 6042 SizeOfPredicates, 32 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 23/33 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...