./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/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 fbf067540b591146948080eee51e37609cfd9933 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:28:15,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:28:15,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:28:15,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:28:15,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:28:15,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:28:15,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:28:15,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:28:15,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:28:15,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:28:15,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:28:15,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:28:15,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:28:15,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:28:15,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:28:15,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:28:15,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:28:15,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:28:15,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:28:15,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:28:15,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:28:15,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:28:15,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:28:15,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:28:15,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:28:15,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:28:15,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:28:15,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:28:15,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:28:15,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:28:15,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:28:15,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:28:15,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:28:15,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:28:15,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:28:15,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:28:15,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:28:15,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:28:15,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:28:15,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:28:15,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:28:15,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:28:15,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:28:15,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:28:15,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:28:15,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:28:15,690 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:28:15,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:28:15,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:28:15,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:28:15,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:28:15,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:28:15,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:28:15,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:28:15,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:28:15,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:28:15,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:28:15,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:28:15,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:28:15,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:28:15,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:28:15,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:28:15,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:28:15,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:28:15,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:28:15,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:28:15,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:28:15,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:28:15,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:28:15,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:28:15,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:28:15,695 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_d4108401-84ba-43e6-a49b-12fbce2745f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbf067540b591146948080eee51e37609cfd9933 [2020-11-29 20:28:16,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:28:16,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:28:16,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:28:16,078 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:28:16,080 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:28:16,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i [2020-11-29 20:28:16,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/data/5793df9bb/2f0be21665994c4f92b46947d8d388ac/FLAG8a6b1763a [2020-11-29 20:28:16,718 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:28:16,719 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/sv-benchmarks/c/array-lopstr16/flag_loopdep.i [2020-11-29 20:28:16,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/data/5793df9bb/2f0be21665994c4f92b46947d8d388ac/FLAG8a6b1763a [2020-11-29 20:28:17,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/data/5793df9bb/2f0be21665994c4f92b46947d8d388ac [2020-11-29 20:28:17,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:28:17,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:28:17,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:28:17,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:28:17,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:28:17,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736e07f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17, skipping insertion in model container [2020-11-29 20:28:17,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:28:17,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:28:17,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:28:17,389 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:28:17,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:28:17,432 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:28:17,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17 WrapperNode [2020-11-29 20:28:17,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:28:17,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:28:17,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:28:17,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:28:17,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:28:17,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:28:17,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:28:17,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:28:17,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... [2020-11-29 20:28:17,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:28:17,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:28:17,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:28:17,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:28:17,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:28:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:28:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:28:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:28:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:28:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:28:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:28:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:28:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:28:18,181 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:28:18,183 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 20:28:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:18 BoogieIcfgContainer [2020-11-29 20:28:18,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:28:18,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:28:18,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:28:18,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:28:18,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:28:17" (1/3) ... [2020-11-29 20:28:18,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4ac71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:28:18, skipping insertion in model container [2020-11-29 20:28:18,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:17" (2/3) ... [2020-11-29 20:28:18,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4ac71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:28:18, skipping insertion in model container [2020-11-29 20:28:18,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:18" (3/3) ... [2020-11-29 20:28:18,197 INFO L111 eAbstractionObserver]: Analyzing ICFG flag_loopdep.i [2020-11-29 20:28:18,210 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:28:18,215 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:28:18,231 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:28:18,277 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:28:18,277 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:28:18,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:28:18,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:28:18,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:28:18,278 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:28:18,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:28:18,278 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:28:18,295 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-29 20:28:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:28:18,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:18,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:18,304 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:18,311 INFO L82 PathProgramCache]: Analyzing trace with hash -362844109, now seen corresponding path program 1 times [2020-11-29 20:28:18,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:18,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75178209] [2020-11-29 20:28:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:18,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75178209] [2020-11-29 20:28:18,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:18,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:28:18,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488374306] [2020-11-29 20:28:18,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:28:18,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:18,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:28:18,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:28:18,539 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-29 20:28:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:18,557 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-11-29 20:28:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:28:18,558 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-29 20:28:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:18,576 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:28:18,576 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 20:28:18,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:28:18,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 20:28:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 20:28:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 20:28:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-29 20:28:18,618 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-11-29 20:28:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:18,619 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-29 20:28:18,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:28:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-29 20:28:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:28:18,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:18,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:18,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:28:18,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:18,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1941078686, now seen corresponding path program 1 times [2020-11-29 20:28:18,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:18,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388689793] [2020-11-29 20:28:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:18,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388689793] [2020-11-29 20:28:18,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:18,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:28:18,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082871945] [2020-11-29 20:28:18,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:28:18,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:28:18,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:18,775 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2020-11-29 20:28:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:18,812 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-11-29 20:28:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:28:18,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 20:28:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:18,814 INFO L225 Difference]: With dead ends: 34 [2020-11-29 20:28:18,814 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 20:28:18,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 20:28:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-29 20:28:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 20:28:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-11-29 20:28:18,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-11-29 20:28:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:18,821 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-11-29 20:28:18,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:28:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-11-29 20:28:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:28:18,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:18,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:18,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:28:18,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:18,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:18,823 INFO L82 PathProgramCache]: Analyzing trace with hash -638557024, now seen corresponding path program 1 times [2020-11-29 20:28:18,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:18,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908267273] [2020-11-29 20:28:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:28:18,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908267273] [2020-11-29 20:28:18,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:18,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:28:18,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248226236] [2020-11-29 20:28:18,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:28:18,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:18,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:28:18,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:18,937 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2020-11-29 20:28:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:18,982 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2020-11-29 20:28:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:28:18,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-29 20:28:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:18,985 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:28:18,985 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 20:28:18,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 20:28:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2020-11-29 20:28:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 20:28:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-11-29 20:28:18,990 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2020-11-29 20:28:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:18,990 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-11-29 20:28:18,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:28:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-11-29 20:28:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:28:18,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:18,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:18,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:28:18,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:18,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1305706270, now seen corresponding path program 1 times [2020-11-29 20:28:18,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:18,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405418880] [2020-11-29 20:28:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:28:19,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405418880] [2020-11-29 20:28:19,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679584141] [2020-11-29 20:28:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:28:19,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:28:19,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:19,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-29 20:28:19,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061580698] [2020-11-29 20:28:19,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:28:19,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:19,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:28:19,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:28:19,281 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2020-11-29 20:28:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:19,327 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-11-29 20:28:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:28:19,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 20:28:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:19,340 INFO L225 Difference]: With dead ends: 36 [2020-11-29 20:28:19,340 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 20:28:19,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:28:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 20:28:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 20:28:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 20:28:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-29 20:28:19,344 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2020-11-29 20:28:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:19,345 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 20:28:19,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:28:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-29 20:28:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:28:19,352 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:19,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:19,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:19,553 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:19,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1698733280, now seen corresponding path program 1 times [2020-11-29 20:28:19,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:19,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550713226] [2020-11-29 20:28:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:28:19,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550713226] [2020-11-29 20:28:19,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208762155] [2020-11-29 20:28:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:19,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:28:19,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:28:19,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:28:19,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 20:28:19,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092555671] [2020-11-29 20:28:19,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:19,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:19,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:19,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:19,822 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 6 states. [2020-11-29 20:28:19,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:19,947 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-11-29 20:28:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:28:19,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-29 20:28:19,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:19,949 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:28:19,950 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 20:28:19,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 20:28:19,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 25. [2020-11-29 20:28:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 20:28:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-29 20:28:19,956 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-11-29 20:28:19,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:19,957 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-29 20:28:19,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:19,957 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-29 20:28:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:28:19,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:19,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:20,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:20,159 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:20,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:20,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1587975330, now seen corresponding path program 2 times [2020-11-29 20:28:20,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:20,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779343099] [2020-11-29 20:28:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 20:28:20,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779343099] [2020-11-29 20:28:20,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387378112] [2020-11-29 20:28:20,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:20,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:28:20,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:28:20,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 20:28:20,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:28:20,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-29 20:28:20,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633193374] [2020-11-29 20:28:20,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:28:20,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:28:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:28:20,551 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 8 states. [2020-11-29 20:28:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:20,595 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-11-29 20:28:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:28:20,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-29 20:28:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:20,599 INFO L225 Difference]: With dead ends: 46 [2020-11-29 20:28:20,599 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 20:28:20,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:28:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 20:28:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-11-29 20:28:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 20:28:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-29 20:28:20,614 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-11-29 20:28:20,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:20,615 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-29 20:28:20,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:28:20,616 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-29 20:28:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:28:20,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:20,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:20,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:20,834 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:20,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:20,834 INFO L82 PathProgramCache]: Analyzing trace with hash -331654108, now seen corresponding path program 3 times [2020-11-29 20:28:20,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:20,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031586436] [2020-11-29 20:28:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 20:28:20,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031586436] [2020-11-29 20:28:20,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403755923] [2020-11-29 20:28:20,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/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 20:28:21,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 20:28:21,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:21,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:28:21,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 20:28:21,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:28:21,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-11-29 20:28:21,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014484329] [2020-11-29 20:28:21,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:28:21,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:21,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:28:21,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:28:21,128 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 9 states. [2020-11-29 20:28:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:21,262 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-11-29 20:28:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:28:21,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-29 20:28:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:21,265 INFO L225 Difference]: With dead ends: 80 [2020-11-29 20:28:21,265 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 20:28:21,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:28:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 20:28:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 32. [2020-11-29 20:28:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 20:28:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-11-29 20:28:21,272 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-11-29 20:28:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:21,272 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-11-29 20:28:21,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:28:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-11-29 20:28:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 20:28:21,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:21,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:21,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:21,478 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:21,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1646352678, now seen corresponding path program 4 times [2020-11-29 20:28:21,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:21,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171411633] [2020-11-29 20:28:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:28:21,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171411633] [2020-11-29 20:28:21,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124231007] [2020-11-29 20:28:21,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/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 20:28:21,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:28:21,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:21,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:28:21,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 20:28:21,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:28:21,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-11-29 20:28:21,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516890747] [2020-11-29 20:28:21,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:28:21,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:21,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:28:21,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:28:21,813 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-11-29 20:28:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:21,979 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2020-11-29 20:28:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:28:21,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-11-29 20:28:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:21,981 INFO L225 Difference]: With dead ends: 97 [2020-11-29 20:28:21,981 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 20:28:21,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:28:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 20:28:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 37. [2020-11-29 20:28:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:28:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-29 20:28:21,988 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 29 [2020-11-29 20:28:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:21,989 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-29 20:28:21,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:28:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-29 20:28:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 20:28:21,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:21,995 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:22,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:22,210 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:22,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:22,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1305938856, now seen corresponding path program 5 times [2020-11-29 20:28:22,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:22,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249167358] [2020-11-29 20:28:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 20:28:22,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249167358] [2020-11-29 20:28:22,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110289818] [2020-11-29 20:28:22,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:22,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 20:28:22,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:22,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:28:22,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-29 20:28:22,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:28:22,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-11-29 20:28:22,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699084363] [2020-11-29 20:28:22,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:28:22,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:22,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:28:22,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:28:22,733 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 13 states. [2020-11-29 20:28:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:22,917 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2020-11-29 20:28:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:28:22,919 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-11-29 20:28:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:22,920 INFO L225 Difference]: With dead ends: 114 [2020-11-29 20:28:22,921 INFO L226 Difference]: Without dead ends: 90 [2020-11-29 20:28:22,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:28:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-29 20:28:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 42. [2020-11-29 20:28:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 20:28:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-11-29 20:28:22,937 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 34 [2020-11-29 20:28:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:22,938 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-11-29 20:28:22,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:28:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-11-29 20:28:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 20:28:22,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:22,941 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:23,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:23,158 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:23,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:23,158 INFO L82 PathProgramCache]: Analyzing trace with hash 679347030, now seen corresponding path program 6 times [2020-11-29 20:28:23,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:23,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400036162] [2020-11-29 20:28:23,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-29 20:28:23,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400036162] [2020-11-29 20:28:23,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624232488] [2020-11-29 20:28:23,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:23,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-29 20:28:23,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:23,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 20:28:23,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:23,508 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-11-29 20:28:23,509 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:28:23,525 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:28:23,526 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:28:23,527 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2020-11-29 20:28:23,769 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:28:23,770 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2020-11-29 20:28:23,772 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:23,777 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-29 20:28:23,787 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:28:23,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:28:23,794 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:28:23,794 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:15 [2020-11-29 20:28:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-29 20:28:23,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:28:23,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-11-29 20:28:23,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857484684] [2020-11-29 20:28:23,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 20:28:23,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:23,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 20:28:23,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:28:23,895 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 16 states. [2020-11-29 20:28:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:25,540 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-11-29 20:28:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 20:28:25,541 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-11-29 20:28:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:25,542 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:28:25,542 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:28:25,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 20:28:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:28:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:28:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:28:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:28:25,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-11-29 20:28:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:25,544 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:28:25,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 20:28:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:28:25,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:28:25,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 20:28:25,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:28:25,970 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 41) no Hoare annotation was computed. [2020-11-29 20:28:25,971 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 41) the Hoare annotation is: (or (<= 1 ULTIMATE.start_main_~flag~0) (and (< ULTIMATE.start_main_~i~1 1000000) (= |ULTIMATE.start_main_~#a~0.base| ULTIMATE.start_init_~a.base) (= |ULTIMATE.start_main_~#a~0.offset| ULTIMATE.start_init_~a.offset) (= ULTIMATE.start_init_~size 1000000) (exists ((v_ULTIMATE.start_init_~i~0_11 Int)) (and (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| (* v_ULTIMATE.start_init_~i~0_11 4))) 0)) (<= ULTIMATE.start_init_~i~0 (+ v_ULTIMATE.start_init_~i~0_11 1)) (< v_ULTIMATE.start_init_~i~0_11 ULTIMATE.start_init_~size))) (exists ((v_ULTIMATE.start_init_~i~0_11 Int)) (and (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| (* v_ULTIMATE.start_init_~i~0_11 4))) 0)) (< v_ULTIMATE.start_init_~i~0_11 1000000) (<= 999999 v_ULTIMATE.start_init_~i~0_11))))) [2020-11-29 20:28:25,971 INFO L274 CegarLoopResult]: For program point L35-4(lines 35 41) no Hoare annotation was computed. [2020-11-29 20:28:25,971 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-11-29 20:28:25,971 INFO L270 CegarLoopResult]: At program point L23-3(lines 23 26) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#a~0.base| ULTIMATE.start_init_~a.base)) (.cse1 (= |ULTIMATE.start_main_~#a~0.offset| ULTIMATE.start_init_~a.offset)) (.cse2 (= ULTIMATE.start_init_~size 1000000))) (or (and .cse0 .cse1 .cse2 (exists ((v_ULTIMATE.start_init_~i~0_11 Int)) (and (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| (* v_ULTIMATE.start_init_~i~0_11 4))) 0)) (<= ULTIMATE.start_init_~i~0 (+ v_ULTIMATE.start_init_~i~0_11 1)) (< v_ULTIMATE.start_init_~i~0_11 ULTIMATE.start_init_~size)))) (and (= ULTIMATE.start_init_~i~0 0) .cse0 .cse1 .cse2))) [2020-11-29 20:28:25,971 INFO L274 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-11-29 20:28:25,971 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:28:25,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:28:25,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L20(lines 20 27) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L37(lines 37 40) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-11-29 20:28:25,972 INFO L274 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-11-29 20:28:25,973 INFO L274 CegarLoopResult]: For program point L42-2(lines 42 46) no Hoare annotation was computed. [2020-11-29 20:28:25,973 INFO L270 CegarLoopResult]: At program point L42-3(lines 42 46) the Hoare annotation is: (<= 1 ULTIMATE.start_main_~flag~0) [2020-11-29 20:28:25,973 INFO L274 CegarLoopResult]: For program point L42-4(lines 42 46) no Hoare annotation was computed. [2020-11-29 20:28:25,973 INFO L277 CegarLoopResult]: At program point L47(lines 28 48) the Hoare annotation is: true [2020-11-29 20:28:25,996 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:25,997 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:25,997 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:25,998 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:25,998 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:25,998 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:25,999 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:25,999 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,001 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,001 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,006 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,008 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,008 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,008 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,008 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,012 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,012 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,012 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,013 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,014 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,015 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,015 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,015 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,016 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:28:26 BoogieIcfgContainer [2020-11-29 20:28:26,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:28:26,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:28:26,023 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:28:26,023 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:28:26,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:18" (3/4) ... [2020-11-29 20:28:26,028 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:28:26,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 20:28:26,044 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 20:28:26,044 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:28:26,044 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:28:26,076 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((a == a && a == a) && size == 1000000) && (\exists v_ULTIMATE.start_init_~i~0_11 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0_11 * 4] == 0) && i <= v_ULTIMATE.start_init_~i~0_11 + 1) && v_ULTIMATE.start_init_~i~0_11 < size)) || (((i == 0 && a == a) && a == a) && size == 1000000) [2020-11-29 20:28:26,077 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1 <= flag || (((((i < 1000000 && a == a) && a == a) && size == 1000000) && (\exists v_ULTIMATE.start_init_~i~0_11 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0_11 * 4] == 0) && i <= v_ULTIMATE.start_init_~i~0_11 + 1) && v_ULTIMATE.start_init_~i~0_11 < size)) && (\exists v_ULTIMATE.start_init_~i~0_11 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0_11 * 4] == 0) && v_ULTIMATE.start_init_~i~0_11 < 1000000) && 999999 <= v_ULTIMATE.start_init_~i~0_11)) [2020-11-29 20:28:26,117 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d4108401-84ba-43e6-a49b-12fbce2745f4/bin/uautomizer/witness.graphml [2020-11-29 20:28:26,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:28:26,119 INFO L168 Benchmark]: Toolchain (without parser) took 9001.61 ms. Allocated memory was 83.9 MB in the beginning and 144.7 MB in the end (delta: 60.8 MB). Free memory was 51.1 MB in the beginning and 59.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:26,120 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:28:26,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.96 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 50.9 MB in the beginning and 95.3 MB in the end (delta: -44.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:26,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.35 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 93.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:28:26,121 INFO L168 Benchmark]: Boogie Preprocessor took 58.10 ms. Allocated memory is still 119.5 MB. Free memory was 93.7 MB in the beginning and 92.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:26,122 INFO L168 Benchmark]: RCFGBuilder took 634.08 ms. Allocated memory is still 119.5 MB. Free memory was 92.1 MB in the beginning and 77.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:26,122 INFO L168 Benchmark]: TraceAbstraction took 7835.10 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 76.9 MB in the beginning and 63.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:26,123 INFO L168 Benchmark]: Witness Printer took 94.97 ms. Allocated memory is still 144.7 MB. Free memory was 63.1 MB in the beginning and 59.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:26,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.96 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 50.9 MB in the beginning and 95.3 MB in the end (delta: -44.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.35 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 93.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.10 ms. Allocated memory is still 119.5 MB. Free memory was 93.7 MB in the beginning and 92.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 634.08 ms. Allocated memory is still 119.5 MB. Free memory was 92.1 MB in the beginning and 77.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7835.10 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 76.9 MB in the beginning and 63.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. * Witness Printer took 94.97 ms. Allocated memory is still 144.7 MB. Free memory was 63.1 MB in the beginning and 59.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant [2020-11-29 20:28:26,148 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,149 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,151 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,159 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,161 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,161 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,161 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,161 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,162 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,162 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: 1 <= flag || (((((i < 1000000 && a == a) && a == a) && size == 1000000) && (\exists v_ULTIMATE.start_init_~i~0_11 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0_11 * 4] == 0) && i <= v_ULTIMATE.start_init_~i~0_11 + 1) && v_ULTIMATE.start_init_~i~0_11 < size)) && (\exists v_ULTIMATE.start_init_~i~0_11 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0_11 * 4] == 0) && v_ULTIMATE.start_init_~i~0_11 < 1000000) && 999999 <= v_ULTIMATE.start_init_~i~0_11)) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 <= flag - InvariantResult [Line: 23]: Loop Invariant [2020-11-29 20:28:26,163 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,164 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,164 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,164 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,164 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-11-29 20:28:26,165 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-11-29 20:28:26,165 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,165 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0_11,QUANTIFIED] [2020-11-29 20:28:26,166 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (((a == a && a == a) && size == 1000000) && (\exists v_ULTIMATE.start_init_~i~0_11 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0_11 * 4] == 0) && i <= v_ULTIMATE.start_init_~i~0_11 + 1) && v_ULTIMATE.start_init_~i~0_11 < size)) || (((i == 0 && a == a) && a == a) && size == 1000000) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 166 SDtfs, 262 SDslu, 369 SDs, 0 SdLazy, 332 SolverSat, 59 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=9, 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, 10 MinimizatonAttempts, 151 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 20 NumberOfFragments, 109 HoareAnnotationTreeSize, 4 FomulaSimplifications, 445 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 67 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 402 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 385 ConstructedInterpolants, 15 QuantifiedInterpolants, 37499 SizeOfPredicates, 21 NumberOfNonLiveVariables, 938 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 187/347 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...