./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound20.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_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/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 24eec3a97244e66f365244167855cff7835332d4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 21:31:22,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:31:22,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:31:22,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:31:22,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:31:22,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:31:22,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:31:22,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:31:22,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:31:22,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:31:22,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:31:22,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:31:22,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:31:22,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:31:22,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:31:22,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:31:22,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:31:22,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:31:22,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:31:22,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:31:22,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:31:22,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:31:22,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:31:22,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:31:22,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:31:22,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:31:22,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:31:22,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:31:22,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:31:22,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:31:22,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:31:22,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:31:22,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:31:22,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:31:22,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:31:22,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:31:22,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:31:22,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:31:22,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:31:22,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:31:22,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:31:22,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:31:22,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:31:22,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:31:22,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:31:22,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:31:22,749 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:31:22,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:31:22,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:31:22,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:31:22,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:31:22,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:31:22,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:31:22,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:31:22,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:31:22,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:31:22,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:31:22,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:31:22,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:31:22,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:31:22,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:31:22,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:31:22,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:31:22,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:31:22,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:31:22,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:31:22,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:31:22,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:31:22,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:31:22,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:31:22,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:31:22,757 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_d2f7df2a-5148-4a20-94dc-5b52557e3452/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24eec3a97244e66f365244167855cff7835332d4 [2020-11-29 21:31:23,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:31:23,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:31:23,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:31:23,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:31:23,088 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:31:23,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound20.c [2020-11-29 21:31:23,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/data/1f515c2f5/57025485508c4aaa8d95981603c12b94/FLAG2dfb92545 [2020-11-29 21:31:23,718 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:31:23,719 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound20.c [2020-11-29 21:31:23,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/data/1f515c2f5/57025485508c4aaa8d95981603c12b94/FLAG2dfb92545 [2020-11-29 21:31:24,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/data/1f515c2f5/57025485508c4aaa8d95981603c12b94 [2020-11-29 21:31:24,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:31:24,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:31:24,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:31:24,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:31:24,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:31:24,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5034d4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24, skipping insertion in model container [2020-11-29 21:31:24,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:31:24,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:31:24,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:31:24,341 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:31:24,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:31:24,403 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:31:24,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24 WrapperNode [2020-11-29 21:31:24,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:31:24,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:31:24,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:31:24,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:31:24,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:31:24,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:31:24,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:31:24,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:31:24,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... [2020-11-29 21:31:24,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:31:24,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:31:24,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:31:24,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:31:24,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/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 21:31:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:31:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:31:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:31:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:31:24,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:31:24,919 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-29 21:31:24,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:31:24 BoogieIcfgContainer [2020-11-29 21:31:24,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:31:24,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:31:24,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:31:24,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:31:24,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:31:24" (1/3) ... [2020-11-29 21:31:24,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a505145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:31:24, skipping insertion in model container [2020-11-29 21:31:24,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:24" (2/3) ... [2020-11-29 21:31:24,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a505145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:31:24, skipping insertion in model container [2020-11-29 21:31:24,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:31:24" (3/3) ... [2020-11-29 21:31:24,942 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound20.c [2020-11-29 21:31:24,960 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:31:24,964 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 21:31:24,978 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 21:31:25,004 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:31:25,004 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:31:25,005 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:31:25,005 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:31:25,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:31:25,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:31:25,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:31:25,005 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:31:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-29 21:31:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:31:25,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:31:25,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:31:25,026 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:31:25,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:25,031 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-29 21:31:25,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:25,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933955511] [2020-11-29 21:31:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:25,243 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 21:31:25,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933955511] [2020-11-29 21:31:25,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:31:25,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:31:25,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672519903] [2020-11-29 21:31:25,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:31:25,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:31:25,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:31:25,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:31:25,273 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-29 21:31:25,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:31:25,292 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-11-29 21:31:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:31:25,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 21:31:25,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:31:25,305 INFO L225 Difference]: With dead ends: 43 [2020-11-29 21:31:25,306 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 21:31:25,310 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 21:31:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 21:31:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 21:31:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 21:31:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-29 21:31:25,359 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-11-29 21:31:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:31:25,359 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-29 21:31:25,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:31:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-29 21:31:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:31:25,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:31:25,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:31:25,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:31:25,362 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:31:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-29 21:31:25,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:25,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271719182] [2020-11-29 21:31:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:25,420 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:31:25,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710446649] [2020-11-29 21:31:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/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 21:31:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:25,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:31:25,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:25,601 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 21:31:25,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271719182] [2020-11-29 21:31:25,602 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:31:25,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710446649] [2020-11-29 21:31:25,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:31:25,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:31:25,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697379776] [2020-11-29 21:31:25,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:31:25,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:31:25,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:31:25,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:31:25,605 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2020-11-29 21:31:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:31:25,673 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-29 21:31:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:31:25,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 21:31:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:31:25,676 INFO L225 Difference]: With dead ends: 29 [2020-11-29 21:31:25,676 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 21:31:25,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 21:31:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 21:31:25,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-29 21:31:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 21:31:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-29 21:31:25,682 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-11-29 21:31:25,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:31:25,682 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-29 21:31:25,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:31:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-29 21:31:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 21:31:25,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:31:25,684 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:31:25,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 21:31:25,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:31:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:25,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2132918982, now seen corresponding path program 1 times [2020-11-29 21:31:25,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:25,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090559674] [2020-11-29 21:31:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:25,912 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:31:25,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992508235] [2020-11-29 21:31:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/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 21:31:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:26,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:31:26,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:26,156 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 21:31:26,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090559674] [2020-11-29 21:31:26,156 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:31:26,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992508235] [2020-11-29 21:31:26,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:31:26,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:31:26,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517177695] [2020-11-29 21:31:26,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:31:26,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:31:26,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:31:26,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:31:26,159 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-11-29 21:31:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:31:28,373 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-29 21:31:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:31:28,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 21:31:28,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:31:28,375 INFO L225 Difference]: With dead ends: 29 [2020-11-29 21:31:28,375 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 21:31:28,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:31:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 21:31:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-29 21:31:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 21:31:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-29 21:31:28,386 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2020-11-29 21:31:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:31:28,386 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-29 21:31:28,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:31:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-29 21:31:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:31:28,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:31:28,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:31:28,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:31:28,602 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:31:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:28,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2049083668, now seen corresponding path program 1 times [2020-11-29 21:31:28,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:28,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527709798] [2020-11-29 21:31:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:28,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:31:28,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512431502] [2020-11-29 21:31:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/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 21:31:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:28,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 21:31:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:28,706 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:31:28,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:31:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 21:31:28,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527709798] [2020-11-29 21:31:28,786 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:31:28,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512431502] [2020-11-29 21:31:28,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:31:28,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:31:28,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804595674] [2020-11-29 21:31:28,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:31:28,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:31:28,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:31:28,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:31:28,789 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2020-11-29 21:31:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:31:33,005 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-29 21:31:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:31:33,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 21:31:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:31:33,006 INFO L225 Difference]: With dead ends: 24 [2020-11-29 21:31:33,007 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 21:31:33,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:31:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 21:31:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 21:31:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 21:31:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-29 21:31:33,013 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-11-29 21:31:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:31:33,014 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-29 21:31:33,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:31:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-29 21:31:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:31:33,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:31:33,015 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:31:33,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:31:33,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:31:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:33,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2049123390, now seen corresponding path program 2 times [2020-11-29 21:31:33,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:33,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326794046] [2020-11-29 21:31:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:33,244 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:31:33,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366710075] [2020-11-29 21:31:33,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/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 21:31:33,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:31:33,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:31:33,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 21:31:33,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:35,410 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_~y~0 c_ULTIMATE.start_main_~x~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_~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 21:31:35,414 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:31:35,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:31:41,796 WARN L193 SmtUtils]: Spent 4.34 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 21:31:42,245 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 21:31:42,292 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 21:31:42,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326794046] [2020-11-29 21:31:42,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:31:42,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366710075] [2020-11-29 21:31:42,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:31:42,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 21:31:42,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945387961] [2020-11-29 21:31:42,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:31:42,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:31:42,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:31:42,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2020-11-29 21:31:42,295 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-11-29 21:31:53,667 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 21:31:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:31:54,378 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 21:31:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:31:54,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-29 21:31:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:31:54,380 INFO L225 Difference]: With dead ends: 27 [2020-11-29 21:31:54,380 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 21:31:54,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=26, Invalid=65, Unknown=3, NotChecked=16, Total=110 [2020-11-29 21:31:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 21:31:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-29 21:31:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 21:31:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-29 21:31:54,386 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2020-11-29 21:31:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:31:54,386 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-29 21:31:54,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:31:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-29 21:31:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:31:54,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:31:54,388 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:31:54,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:31:54,588 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:31:54,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:54,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1070641094, now seen corresponding path program 3 times [2020-11-29 21:31:54,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:54,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917763460] [2020-11-29 21:31:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:54,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:31:54,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083838411] [2020-11-29 21:31:54,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/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 21:31:57,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 21:31:57,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:31:57,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 21:31:57,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:57,705 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 21:31:57,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:31:57,756 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:31:57,757 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:31:58,814 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 15 [2020-11-29 21:32:01,273 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 21:32:01,278 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:32:01,280 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:32:06,795 WARN L193 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 21:32:30,356 WARN L193 SmtUtils]: Spent 15.09 s on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-29 21:32:30,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:32:30,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 21:32:57,340 WARN L193 SmtUtils]: Spent 26.93 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 21:33:08,854 WARN L193 SmtUtils]: Spent 11.51 s on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 21:33:26,003 WARN L193 SmtUtils]: Spent 9.26 s on a formula simplification that was a NOOP. DAG size: 34 [2020-11-29 21:33:28,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:33:36,311 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (and (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (not (= (+ (* .cse1 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0))) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse1) (* .cse1 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= ULTIMATE.start_main_~z~0 20) (<= 1 ULTIMATE.start_main_~z~0))))) is different from false [2020-11-29 21:33:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 21:33:36,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917763460] [2020-11-29 21:33:36,346 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:33:36,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083838411] [2020-11-29 21:33:36,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:33:36,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 21:33:36,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695395038] [2020-11-29 21:33:36,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:33:36,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:33:36,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:33:36,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=4, NotChecked=18, Total=132 [2020-11-29 21:33:36,349 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2020-11-29 21:33:53,384 WARN L193 SmtUtils]: Spent 13.04 s on a formula simplification. DAG size of input: 47 DAG size of output: 21 [2020-11-29 21:34:01,288 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse1 (div .cse0 c_ULTIMATE.start_main_~z~0))) (and (= (mod c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 c_ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) c_ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* c_ULTIMATE.start_main_~z~0 .cse1) (* .cse1 (- 1)) 1) c_ULTIMATE.start_main_~z~0) 0) (<= c_ULTIMATE.start_main_~z~0 20) (or (<= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) (and (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse3 (div .cse2 ULTIMATE.start_main_~z~0))) (and (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse3 (- 1)) ULTIMATE.start_main_~z~0) 0) (not (= (+ (* .cse3 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ (* .cse3 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0))) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse3) (* .cse3 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= ULTIMATE.start_main_~z~0 20) (<= 1 ULTIMATE.start_main_~z~0))))) (<= 0 c_ULTIMATE.start___VERIFIER_assert_~cond))) (= (+ (* .cse1 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (+ (* .cse1 c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~z~0)) (<= 1 c_ULTIMATE.start_main_~z~0)))) is different from false [2020-11-29 21:35:27,406 WARN L193 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-11-29 21:35:29,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:35:29,442 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-29 21:35:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 21:35:29,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-11-29 21:35:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:35:29,465 INFO L225 Difference]: With dead ends: 23 [2020-11-29 21:35:29,465 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:35:29,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 152.7s TimeCoverageRelationStatistics Valid=62, Invalid=147, Unknown=9, NotChecked=54, Total=272 [2020-11-29 21:35:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:35:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:35:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:35:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:35:29,467 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-29 21:35:29,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:35:29,467 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:35:29,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:35:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:35:29,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:35:29,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 21:35:29,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:35:36,603 WARN L193 SmtUtils]: Spent 6.88 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 21:36:20,375 WARN L193 SmtUtils]: Spent 43.77 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-11-29 21:36:20,383 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 21:36:20,383 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~z~0 20)) (.cse1 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) .cse0 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse1) (let ((.cse3 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse2 (div .cse3 ULTIMATE.start_main_~z~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (+ (* .cse2 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse2 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0))) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse2 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse2) (* .cse2 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1))))) [2020-11-29 21:36:20,383 INFO L274 CegarLoopResult]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2020-11-29 21:36:20,383 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:36:20,384 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:36:20,384 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:36:20,384 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 21:36:20,384 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-29 21:36:20,384 INFO L270 CegarLoopResult]: At program point L16-1(lines 39 40) the Hoare annotation is: (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ ULTIMATE.start_main_~x~0 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~z~0 20) (<= 1 ULTIMATE.start_main_~z~0)) [2020-11-29 21:36:20,384 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-29 21:36:20,384 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-29 21:36:20,384 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-29 21:36:20,384 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L274 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-11-29 21:36:20,385 INFO L277 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-11-29 21:36:20,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:36:20 BoogieIcfgContainer [2020-11-29 21:36:20,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:36:20,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:36:20,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:36:20,409 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:36:20,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:31:24" (3/4) ... [2020-11-29 21:36:20,413 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:36:20,424 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 21:36:20,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:36:20,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:36:20,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:36:20,471 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d2f7df2a-5148-4a20-94dc-5b52557e3452/bin/uautomizer/witness.graphml [2020-11-29 21:36:20,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:36:20,473 INFO L168 Benchmark]: Toolchain (without parser) took 296379.14 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.1 MB in the beginning and 65.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:36:20,473 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:36:20,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.60 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.1 MB in the beginning and 94.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:36:20,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.70 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 92.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:36:20,475 INFO L168 Benchmark]: Boogie Preprocessor took 43.31 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:36:20,475 INFO L168 Benchmark]: RCFGBuilder took 411.25 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 78.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:36:20,476 INFO L168 Benchmark]: TraceAbstraction took 295485.26 ms. Allocated memory is still 117.4 MB. Free memory was 78.3 MB in the beginning and 68.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:36:20,477 INFO L168 Benchmark]: Witness Printer took 62.37 ms. Allocated memory is still 117.4 MB. Free memory was 68.6 MB in the beginning and 65.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:36:20,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.60 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.1 MB in the beginning and 94.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.70 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 92.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.31 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 411.25 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 78.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 295485.26 ms. Allocated memory is still 117.4 MB. Free memory was 78.3 MB in the beginning and 68.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 62.37 ms. Allocated memory is still 117.4 MB. Free memory was 68.6 MB in the beginning and 65.5 MB in the end (delta: 3.1 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: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: 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: 39]: Loop Invariant Derived loop invariant: ((((y % z == 0 && (x + -1) % z == 0) && z * x + 1 == x + y) && 1 == cond) && z <= 20) && 1 <= z - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((x == 1 && z <= 20) && z == y) && 1 <= z) || (((((((y % z == 0 && (x + -1) / z * z + y == z + (x + -1) / z * z * z) && (x + -1) % z == 0) && ((x + -1) / z + -1) % z == 0) && (z * ((x + -1) / z) + (x + -1) / z * -1 + 1) % z == 0) && z <= 20) && 1 <= cond) && 1 <= z) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 244.6s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 131.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 50.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 35 SDslu, 167 SDs, 0 SdLazy, 144 SolverSat, 20 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 25.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 164.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 120 HoareAnnotationTreeSize, 4 FomulaSimplifications, 533 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 50.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 108.0s InterpolantComputationTime, 102 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 2 QuantifiedInterpolants, 13533 SizeOfPredicates, 35 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 14/27 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...