./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbc881c594b7bbae672c83bbb2c629f38e40bf15 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:19:24,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:19:24,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:19:24,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:19:24,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:19:24,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:19:24,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:19:24,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:19:24,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:19:24,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:19:24,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:19:24,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:19:24,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:19:24,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:19:24,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:19:24,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:19:24,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:19:24,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:19:24,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:19:24,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:19:24,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:19:24,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:19:24,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:19:24,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:19:24,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:19:24,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:19:24,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:19:24,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:19:24,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:19:24,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:19:24,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:19:24,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:19:24,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:19:24,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:19:24,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:19:24,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:19:24,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:19:24,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:19:24,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:19:24,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:19:24,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:19:24,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:19:24,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:19:24,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:19:24,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:19:24,682 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:19:24,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:19:24,683 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:19:24,683 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:19:24,683 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:19:24,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:19:24,683 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:19:24,684 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:19:24,684 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:19:24,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:19:24,685 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:19:24,685 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:19:24,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:19:24,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:19:24,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:19:24,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:19:24,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:19:24,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:19:24,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:19:24,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:19:24,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:19:24,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:19:24,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:19:24,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:19:24,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:19:24,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:19:24,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:19:24,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:19:24,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:19:24,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:19:24,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:19:24,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:19:24,691 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:19:24,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:19:24,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:19:24,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:19:24,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:19:24,692 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbc881c594b7bbae672c83bbb2c629f38e40bf15 [2020-11-30 02:19:24,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:19:24,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:19:24,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:19:24,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:19:24,994 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:19:24,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-11-30 02:19:25,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/data/531f25cfe/ff44752d4a274f88893e496ac4fd3b7b/FLAG892668f4a [2020-11-30 02:19:25,524 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:19:25,525 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-11-30 02:19:25,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/data/531f25cfe/ff44752d4a274f88893e496ac4fd3b7b/FLAG892668f4a [2020-11-30 02:19:25,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/data/531f25cfe/ff44752d4a274f88893e496ac4fd3b7b [2020-11-30 02:19:25,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:19:25,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:19:25,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:19:25,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:19:25,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:19:25,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:19:25" (1/1) ... [2020-11-30 02:19:25,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b93476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:25, skipping insertion in model container [2020-11-30 02:19:25,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:19:25" (1/1) ... [2020-11-30 02:19:25,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:19:25,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:19:26,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:19:26,138 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:19:26,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:19:26,172 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:19:26,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26 WrapperNode [2020-11-30 02:19:26,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:19:26,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:19:26,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:19:26,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:19:26,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:19:26,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:19:26,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:19:26,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:19:26,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... [2020-11-30 02:19:26,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:19:26,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:19:26,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:19:26,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:19:26,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/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 [2020-11-30 02:19:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:19:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:19:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:19:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:19:26,731 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:19:26,732 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-30 02:19:26,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:19:26 BoogieIcfgContainer [2020-11-30 02:19:26,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:19:26,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:19:26,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:19:26,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:19:26,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:19:25" (1/3) ... [2020-11-30 02:19:26,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307d1371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:19:26, skipping insertion in model container [2020-11-30 02:19:26,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:19:26" (2/3) ... [2020-11-30 02:19:26,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307d1371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:19:26, skipping insertion in model container [2020-11-30 02:19:26,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:19:26" (3/3) ... [2020-11-30 02:19:26,743 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound10.c [2020-11-30 02:19:26,769 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:19:26,781 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 02:19:26,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 02:19:26,879 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:19:26,880 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:19:26,880 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:19:26,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:19:26,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:19:26,880 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:19:26,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:19:26,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:19:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 02:19:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:19:26,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:26,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:19:26,910 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash 118951587, now seen corresponding path program 1 times [2020-11-30 02:19:26,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:19:26,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176695925] [2020-11-30 02:19:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:19:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:19:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:27,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176695925] [2020-11-30 02:19:27,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:19:27,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:19:27,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499085536] [2020-11-30 02:19:27,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:19:27,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:19:27,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:19:27,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:19:27,090 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 02:19:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:27,112 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-11-30 02:19:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:19:27,114 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-30 02:19:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:27,131 INFO L225 Difference]: With dead ends: 57 [2020-11-30 02:19:27,131 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:19:27,140 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 [2020-11-30 02:19:27,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:19:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 02:19:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:19:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 02:19:27,188 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-11-30 02:19:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:27,190 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 02:19:27,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:19:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 02:19:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:19:27,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:27,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:19:27,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:19:27,193 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:27,196 INFO L82 PathProgramCache]: Analyzing trace with hash 117507718, now seen corresponding path program 1 times [2020-11-30 02:19:27,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:19:27,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031972025] [2020-11-30 02:19:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:19:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:19:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:27,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031972025] [2020-11-30 02:19:27,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:19:27,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:19:27,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14848705] [2020-11-30 02:19:27,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:19:27,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:19:27,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:19:27,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:19:27,347 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-11-30 02:19:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:27,442 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-30 02:19:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:19:27,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 02:19:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:27,444 INFO L225 Difference]: With dead ends: 30 [2020-11-30 02:19:27,444 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 02:19:27,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:19:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 02:19:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-11-30 02:19:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:19:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-30 02:19:27,450 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-11-30 02:19:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:27,450 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-30 02:19:27,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:19:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-30 02:19:27,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:19:27,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:27,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:19:27,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:19:27,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:27,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:27,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1255953641, now seen corresponding path program 1 times [2020-11-30 02:19:27,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:19:27,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249943353] [2020-11-30 02:19:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:19:27,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:19:27,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832539170] [2020-11-30 02:19:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/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 [2020-11-30 02:19:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:19:27,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:19:27,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:27,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:27,701 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:19:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:27,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249943353] [2020-11-30 02:19:27,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:19:27,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832539170] [2020-11-30 02:19:27,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:19:27,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:19:27,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363494301] [2020-11-30 02:19:27,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:19:27,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:19:27,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:19:27,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:19:27,730 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-30 02:19:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:27,852 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-11-30 02:19:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:19:27,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-30 02:19:27,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:27,854 INFO L225 Difference]: With dead ends: 45 [2020-11-30 02:19:27,854 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 02:19:27,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:19:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 02:19:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-11-30 02:19:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 02:19:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-30 02:19:27,863 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 7 [2020-11-30 02:19:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:27,863 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-30 02:19:27,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:19:27,863 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-30 02:19:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:19:27,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:27,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:19:28,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 02:19:28,080 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:28,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:28,081 INFO L82 PathProgramCache]: Analyzing trace with hash 85825548, now seen corresponding path program 1 times [2020-11-30 02:19:28,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:19:28,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898788226] [2020-11-30 02:19:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:19:28,093 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:19:28,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58091673] [2020-11-30 02:19:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/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 [2020-11-30 02:19:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:19:28,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:19:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:28,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:28,183 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:19:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:28,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898788226] [2020-11-30 02:19:28,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:19:28,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58091673] [2020-11-30 02:19:28,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:19:28,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:19:28,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175574207] [2020-11-30 02:19:28,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:19:28,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:19:28,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:19:28,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:19:28,204 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-11-30 02:19:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:30,442 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-30 02:19:30,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:19:30,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 02:19:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:30,444 INFO L225 Difference]: With dead ends: 63 [2020-11-30 02:19:30,444 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 02:19:30,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:19:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 02:19:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-11-30 02:19:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 02:19:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-11-30 02:19:30,457 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 9 [2020-11-30 02:19:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:30,458 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-11-30 02:19:30,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:19:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-11-30 02:19:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:19:30,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:30,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:19:30,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:19:30,682 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash -349771845, now seen corresponding path program 1 times [2020-11-30 02:19:30,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:19:30,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566445946] [2020-11-30 02:19:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:19:30,694 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:19:30,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006252136] [2020-11-30 02:19:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/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 [2020-11-30 02:19:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:19:30,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 02:19:30,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:30,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:30,826 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:19:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:30,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566445946] [2020-11-30 02:19:30,870 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:19:30,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006252136] [2020-11-30 02:19:30,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [806573617] [2020-11-30 02:19:30,892 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 02:19:30,892 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:19:30,897 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:19:30,902 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:19:30,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:19:31,573 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:19:31,835 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-11-30 02:19:32,231 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-11-30 02:19:32,706 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-11-30 02:19:33,113 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-11-30 02:19:33,497 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-11-30 02:19:33,882 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-11-30 02:19:34,027 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-11-30 02:19:38,406 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-11-30 02:19:38,778 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-11-30 02:19:38,781 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:19:38,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 02:19:38,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-30 02:19:38,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133254215] [2020-11-30 02:19:38,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:19:38,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:19:38,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:19:38,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=198, Unknown=2, NotChecked=0, Total=240 [2020-11-30 02:19:38,784 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-11-30 02:19:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:46,088 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-11-30 02:19:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:19:46,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-30 02:19:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:46,091 INFO L225 Difference]: With dead ends: 78 [2020-11-30 02:19:46,091 INFO L226 Difference]: Without dead ends: 70 [2020-11-30 02:19:46,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=74, Invalid=344, Unknown=2, NotChecked=0, Total=420 [2020-11-30 02:19:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-30 02:19:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-11-30 02:19:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-30 02:19:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-30 02:19:46,106 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2020-11-30 02:19:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:46,107 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-30 02:19:46,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:19:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-30 02:19:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:19:46,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:46,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2020-11-30 02:19:46,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:19:46,322 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1704627536, now seen corresponding path program 1 times [2020-11-30 02:19:46,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:19:46,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233640831] [2020-11-30 02:19:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:19:46,341 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:19:46,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595183245] [2020-11-30 02:19:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/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 [2020-11-30 02:19:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:19:46,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 02:19:46,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:46,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-30 02:19:46,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233640831] [2020-11-30 02:19:46,773 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:19:46,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595183245] [2020-11-30 02:19:46,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245087134] [2020-11-30 02:19:46,778 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 02:19:46,778 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:19:46,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:19:46,779 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:19:46,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:19:47,335 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:19:47,734 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-11-30 02:19:48,256 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-11-30 02:19:48,683 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-11-30 02:19:49,088 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-11-30 02:19:49,425 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-11-30 02:19:50,331 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-11-30 02:19:50,540 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-11-30 02:19:52,915 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-11-30 02:19:54,657 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-11-30 02:19:54,660 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:19:54,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 02:19:54,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2020-11-30 02:19:54,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512729635] [2020-11-30 02:19:54,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:19:54,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:19:54,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:19:54,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=198, Unknown=1, NotChecked=0, Total=240 [2020-11-30 02:19:54,662 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 7 states. [2020-11-30 02:19:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:55,463 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-11-30 02:19:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:19:55,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-30 02:19:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:55,467 INFO L225 Difference]: With dead ends: 65 [2020-11-30 02:19:55,467 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 02:19:55,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=64, Invalid=315, Unknown=1, NotChecked=0, Total=380 [2020-11-30 02:19:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 02:19:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-30 02:19:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 02:19:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-11-30 02:19:55,480 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 25 [2020-11-30 02:19:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:55,481 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-11-30 02:19:55,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:19:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-11-30 02:19:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 02:19:55,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:55,483 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1] [2020-11-30 02:19:55,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:19:55,702 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:55,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:55,703 INFO L82 PathProgramCache]: Analyzing trace with hash -17501135, now seen corresponding path program 2 times [2020-11-30 02:19:55,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:19:55,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141374799] [2020-11-30 02:19:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:19:55,713 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:19:55,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364493220] [2020-11-30 02:19:55,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/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 [2020-11-30 02:19:55,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 02:19:55,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:19:55,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 02:19:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:56,020 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 02:20:00,609 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (and (= (+ (* 2 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~s~0)) (* 2 .cse0) (* 2 c_ULTIMATE.start_main_~s~0)) (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~s~0) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) 1)) (let ((.cse1 (= (+ .cse0 (* 2 c_ULTIMATE.start_main_~a~0) 1) c_ULTIMATE.start_main_~s~0))) (or (and .cse1 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from false [2020-11-30 02:20:11,547 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-30 02:20:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 02:20:11,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:20:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-30 02:20:13,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141374799] [2020-11-30 02:20:13,050 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:20:13,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364493220] [2020-11-30 02:20:13,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:20:13,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 13 [2020-11-30 02:20:13,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413279446] [2020-11-30 02:20:13,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:20:13,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:20:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:20:13,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=86, Unknown=6, NotChecked=20, Total=156 [2020-11-30 02:20:13,054 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 7 states. [2020-11-30 02:20:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:20:17,443 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-11-30 02:20:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:20:17,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-11-30 02:20:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:20:17,446 INFO L225 Difference]: With dead ends: 51 [2020-11-30 02:20:17,446 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:20:17,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=61, Invalid=118, Unknown=7, NotChecked=24, Total=210 [2020-11-30 02:20:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:20:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:20:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:20:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:20:17,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-11-30 02:20:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:20:17,448 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:20:17,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:20:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:20:17,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:20:17,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-11-30 02:20:17,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:20:26,953 WARN L193 SmtUtils]: Spent 9.23 s on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2020-11-30 02:20:38,327 WARN L193 SmtUtils]: Spent 11.37 s on a formula simplification. DAG size of input: 37 DAG size of output: 22 [2020-11-30 02:20:49,943 WARN L193 SmtUtils]: Spent 11.61 s on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-11-30 02:21:03,137 WARN L193 SmtUtils]: Spent 13.19 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-11-30 02:21:07,176 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 40 DAG size of output: 19 [2020-11-30 02:21:19,341 WARN L193 SmtUtils]: Spent 12.16 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-11-30 02:21:19,343 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 02:21:19,344 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 02:21:19,344 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 02:21:19,344 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:21:19,344 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 02:21:19,344 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 02:21:19,345 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-11-30 02:21:19,345 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 02:21:19,345 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-11-30 02:21:19,345 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 02:21:19,346 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-11-30 02:21:19,346 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 02:21:19,347 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-11-30 02:21:19,347 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 02:21:19,347 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0)) [2020-11-30 02:21:19,347 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 02:21:19,348 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-30 02:21:19,348 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:21:19,348 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 02:21:19,348 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 02:21:19,348 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 02:21:19,348 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 02:21:19,348 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 02:21:19,348 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 02:21:19,349 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 02:21:19,349 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-11-30 02:21:19,349 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 2))) (let ((.cse0 (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse1 1)))) (or (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) .cse0) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) .cse0)))) [2020-11-30 02:21:19,349 INFO L274 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-11-30 02:21:19,349 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 02:21:19,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:21:19 BoogieIcfgContainer [2020-11-30 02:21:19,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:21:19,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:21:19,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:21:19,388 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:21:19,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:19:26" (3/4) ... [2020-11-30 02:21:19,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:21:19,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 02:21:19,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:21:19,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:21:19,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:21:19,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c8859671-479d-4c72-ad32-1b4dd360f329/bin/utaipan/witness.graphml [2020-11-30 02:21:19,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:21:19,452 INFO L168 Benchmark]: Toolchain (without parser) took 113530.80 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 60.5 MB in the beginning and 108.0 MB in the end (delta: -47.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:21:19,453 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:21:19,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.41 ms. Allocated memory is still 92.3 MB. Free memory was 60.3 MB in the beginning and 68.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:19,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.80 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:19,455 INFO L168 Benchmark]: Boogie Preprocessor took 22.69 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:21:19,455 INFO L168 Benchmark]: RCFGBuilder took 500.77 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 49.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:19,456 INFO L168 Benchmark]: TraceAbstraction took 112651.70 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 49.2 MB in the beginning and 111.1 MB in the end (delta: -61.9 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:19,456 INFO L168 Benchmark]: Witness Printer took 63.28 ms. Allocated memory is still 138.4 MB. Free memory was 111.1 MB in the beginning and 108.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:19,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.41 ms. Allocated memory is still 92.3 MB. Free memory was 60.3 MB in the beginning and 68.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.80 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.69 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 500.77 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 49.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 112651.70 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 49.2 MB in the beginning and 111.1 MB in the end (delta: -61.9 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.1 GB. * Witness Printer took 63.28 ms. Allocated memory is still 138.4 MB. Free memory was 111.1 MB in the beginning and 108.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((t * 2 + t * t + 1 == s * 4 && !(0 == cond)) && a * 2 + 1 == t) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((t * 2 + t * t + 1 == s * 4 && !(0 == cond)) && a * 2 + 1 == t) && s == a * a + a * 2 + 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((a == 0 && t == 1) && s == a * a + a * 2 + 1) || (((t * 2 + t * t + 1 == s * 4 && 1 <= cond) && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (t * 2 + t * t + 1 == s * 4 && !(0 == cond)) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 50.7s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 61.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 211 SDslu, 159 SDs, 0 SdLazy, 281 SolverSat, 84 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 173 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 35.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=5, 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, 7 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 34 NumberOfFragments, 210 HoareAnnotationTreeSize, 7 FomulaSimplifications, 760 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 617 FormulaSimplificationTreeSizeReductionInter, 61.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 105 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 32370 SizeOfPredicates, 29 NumberOfNonLiveVariables, 408 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 155/190 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...