./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_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_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/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 8826306ae53b4154d29530d9da06b16418244e52 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:29:20,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:29:20,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:29:20,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:29:20,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:29:20,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:29:20,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:29:20,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:29:20,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:29:20,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:29:20,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:29:20,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:29:20,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:29:20,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:29:20,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:29:20,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:29:20,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:29:20,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:29:20,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:29:20,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:29:20,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:29:20,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:29:20,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:29:20,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:29:20,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:29:20,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:29:20,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:29:20,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:29:20,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:29:20,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:29:20,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:29:20,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:29:20,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:29:20,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:29:20,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:29:20,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:29:20,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:29:20,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:29:20,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:29:20,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:29:20,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:29:20,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:29:20,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:29:20,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:29:20,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:29:20,795 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:29:20,795 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:29:20,796 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:29:20,796 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:29:20,796 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:29:20,796 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:29:20,797 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:29:20,797 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:29:20,797 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:29:20,797 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:29:20,798 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:29:20,798 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:29:20,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:29:20,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:29:20,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:29:20,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:29:20,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:29:20,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:29:20,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:29:20,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:29:20,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:29:20,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:29:20,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:29:20,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:29:20,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:29:20,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:29:20,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:29:20,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:29:20,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:29:20,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:29:20,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:29:20,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:29:20,803 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:29:20,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:29:20,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:29:20,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:29:20,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:29:20,804 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_648b83c2-daf4-44f1-9fdb-669b230cb666/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8826306ae53b4154d29530d9da06b16418244e52 [2020-11-28 07:29:21,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:29:21,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:29:21,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:29:21,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:29:21,087 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:29:21,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2020-11-28 07:29:21,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/data/63198cd84/dce569d1e4b44eb1a03ede6045cd4417/FLAG9f83699ed [2020-11-28 07:29:21,661 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:29:21,662 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2020-11-28 07:29:21,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/data/63198cd84/dce569d1e4b44eb1a03ede6045cd4417/FLAG9f83699ed [2020-11-28 07:29:22,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/data/63198cd84/dce569d1e4b44eb1a03ede6045cd4417 [2020-11-28 07:29:22,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:29:22,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:29:22,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:22,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:29:22,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:29:22,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dbff7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22, skipping insertion in model container [2020-11-28 07:29:22,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:29:22,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:29:22,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:22,269 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:29:22,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:22,331 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:29:22,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22 WrapperNode [2020-11-28 07:29:22,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:22,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:22,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:29:22,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:29:22,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:22,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:29:22,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:29:22,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:29:22,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... [2020-11-28 07:29:22,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:29:22,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:29:22,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:29:22,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:29:22,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/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 [2020-11-28 07:29:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:29:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:29:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:29:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:29:23,038 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:29:23,038 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 07:29:23,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:23 BoogieIcfgContainer [2020-11-28 07:29:23,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:29:23,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:29:23,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:29:23,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:29:23,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:29:22" (1/3) ... [2020-11-28 07:29:23,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddc741d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:23, skipping insertion in model container [2020-11-28 07:29:23,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:22" (2/3) ... [2020-11-28 07:29:23,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddc741d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:23, skipping insertion in model container [2020-11-28 07:29:23,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:23" (3/3) ... [2020-11-28 07:29:23,048 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2020-11-28 07:29:23,058 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:29:23,062 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:29:23,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:29:23,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:29:23,097 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:29:23,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:29:23,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:29:23,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:29:23,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:29:23,099 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:29:23,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:29:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 07:29:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:29:23,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:23,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:29:23,118 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash 100358031, now seen corresponding path program 1 times [2020-11-28 07:29:23,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:23,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086967826] [2020-11-28 07:29:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:23,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086967826] [2020-11-28 07:29:23,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:23,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:23,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964571286] [2020-11-28 07:29:23,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:29:23,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:23,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:29:23,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:29:23,326 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 07:29:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:23,340 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-11-28 07:29:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:29:23,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 07:29:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:23,350 INFO L225 Difference]: With dead ends: 25 [2020-11-28 07:29:23,350 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:29:23,353 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 [2020-11-28 07:29:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:29:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:29:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:29:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 07:29:23,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-11-28 07:29:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:23,384 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 07:29:23,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:29:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 07:29:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:29:23,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:23,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:29:23,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:29:23,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:23,387 INFO L82 PathProgramCache]: Analyzing trace with hash 99468274, now seen corresponding path program 1 times [2020-11-28 07:29:23,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:23,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696796607] [2020-11-28 07:29:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:23,407 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:29:23,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948672123] [2020-11-28 07:29:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/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 [2020-11-28 07:29:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:23,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:29:23,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:23,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:23,591 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:29:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:23,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696796607] [2020-11-28 07:29:23,612 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:23,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948672123] [2020-11-28 07:29:23,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:23,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:29:23,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197169413] [2020-11-28 07:29:23,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:23,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:23,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:23,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:23,616 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-28 07:29:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:25,797 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-11-28 07:29:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:29:25,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-28 07:29:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:25,799 INFO L225 Difference]: With dead ends: 33 [2020-11-28 07:29:25,800 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:29:25,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:29:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 18. [2020-11-28 07:29:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:29:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-28 07:29:25,807 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 5 [2020-11-28 07:29:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:25,807 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-28 07:29:25,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-28 07:29:25,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:29:25,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:25,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:29:26,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:29:26,009 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:26,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1211487480, now seen corresponding path program 1 times [2020-11-28 07:29:26,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:26,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630417743] [2020-11-28 07:29:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:26,025 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:29:26,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997206414] [2020-11-28 07:29:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/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 [2020-11-28 07:29:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:26,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:29:26,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630417743] [2020-11-28 07:29:26,136 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:26,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997206414] [2020-11-28 07:29:26,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:26,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:29:26,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011979879] [2020-11-28 07:29:26,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:29:26,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:26,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:29:26,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:26,139 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2020-11-28 07:29:26,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:26,195 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-11-28 07:29:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:26,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-28 07:29:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:26,197 INFO L225 Difference]: With dead ends: 26 [2020-11-28 07:29:26,197 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 07:29:26,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:26,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 07:29:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-11-28 07:29:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:29:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 07:29:26,202 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2020-11-28 07:29:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:26,202 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 07:29:26,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:29:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 07:29:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:29:26,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:26,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:26,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:26,404 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:26,405 INFO L82 PathProgramCache]: Analyzing trace with hash -262222527, now seen corresponding path program 1 times [2020-11-28 07:29:26,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:26,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350806710] [2020-11-28 07:29:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:26,420 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:29:26,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970770908] [2020-11-28 07:29:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/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 [2020-11-28 07:29:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:26,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:29:26,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:26,491 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 07:29:26,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:29:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:26,592 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:29:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350806710] [2020-11-28 07:29:26,658 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:26,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970770908] [2020-11-28 07:29:26,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:26,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-11-28 07:29:26,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787819615] [2020-11-28 07:29:26,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:29:26,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:26,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:29:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:29:26,660 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 8 states. [2020-11-28 07:29:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:32,946 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-28 07:29:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:29:32,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-28 07:29:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:32,948 INFO L225 Difference]: With dead ends: 22 [2020-11-28 07:29:32,948 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 07:29:32,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:29:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 07:29:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 07:29:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:29:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-28 07:29:32,952 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2020-11-28 07:29:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:32,960 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-28 07:29:32,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:29:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-28 07:29:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:29:32,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:32,962 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-11-28 07:29:33,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:33,174 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:33,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:33,174 INFO L82 PathProgramCache]: Analyzing trace with hash 694035666, now seen corresponding path program 1 times [2020-11-28 07:29:33,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:33,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049205370] [2020-11-28 07:29:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:33,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:29:33,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61140698] [2020-11-28 07:29:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/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 [2020-11-28 07:29:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:33,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 07:29:33,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:33,508 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-11-28 07:29:33,528 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-28 07:29:33,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:29:33,696 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-11-28 07:29:33,704 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 2, 4, 1] term [2020-11-28 07:29:33,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:29:33,727 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-28 07:29:33,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:29:33,733 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:29:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:33,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:33,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:29:33,849 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 4, 1] term [2020-11-28 07:29:33,849 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:29:33,922 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:29:33,922 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:29:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:29:33,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049205370] [2020-11-28 07:29:33,939 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:33,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61140698] [2020-11-28 07:29:33,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [169777204] [2020-11-28 07:29:33,963 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:29:33,963 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:29:33,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:29:33,978 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:29:33,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:29:34,126 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:29:34,784 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:29:35,213 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-11-28 07:29:35,472 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-28 07:29:35,686 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-11-28 07:29:36,356 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-28 07:29:37,299 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-28 07:29:37,300 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:37,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:29:37,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-28 07:29:37,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568355443] [2020-11-28 07:29:37,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:29:37,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:29:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:29:37,303 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2020-11-28 07:29:39,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:39,582 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-28 07:29:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:29:39,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-28 07:29:39,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:39,585 INFO L225 Difference]: With dead ends: 27 [2020-11-28 07:29:39,585 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 07:29:39,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-11-28 07:29:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 07:29:39,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2020-11-28 07:29:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 07:29:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-28 07:29:39,599 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-11-28 07:29:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:39,599 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-28 07:29:39,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:29:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-28 07:29:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:29:39,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:39,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-28 07:29:39,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:39,810 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:39,810 INFO L82 PathProgramCache]: Analyzing trace with hash 40232488, now seen corresponding path program 1 times [2020-11-28 07:29:39,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:39,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536114830] [2020-11-28 07:29:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:39,822 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:29:39,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204266885] [2020-11-28 07:29:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/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 [2020-11-28 07:29:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:39,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:29:39,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:39,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:39,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536114830] [2020-11-28 07:29:39,951 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:39,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204266885] [2020-11-28 07:29:39,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091950547] [2020-11-28 07:29:39,953 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-28 07:29:39,953 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:29:39,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:29:39,954 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:29:39,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:29:39,976 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:29:40,319 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:29:40,624 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-28 07:29:40,757 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-28 07:29:40,937 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-11-28 07:29:41,310 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-28 07:29:41,786 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-28 07:29:41,938 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-28 07:29:42,315 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-28 07:29:42,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:42,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:29:42,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-28 07:29:42,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049534793] [2020-11-28 07:29:42,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:29:42,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:42,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:29:42,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-11-28 07:29:42,318 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2020-11-28 07:29:42,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:42,454 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-11-28 07:29:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 07:29:42,455 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 07:29:42,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:42,456 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:29:42,456 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:29:42,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2020-11-28 07:29:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:29:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 07:29:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:29:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-28 07:29:42,462 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 14 [2020-11-28 07:29:42,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:42,462 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-28 07:29:42,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:29:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-28 07:29:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:29:42,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:42,463 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2020-11-28 07:29:42,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-28 07:29:42,663 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:42,664 INFO L82 PathProgramCache]: Analyzing trace with hash -425329560, now seen corresponding path program 2 times [2020-11-28 07:29:42,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:42,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046654043] [2020-11-28 07:29:42,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:42,674 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:29:42,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044518244] [2020-11-28 07:29:42,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/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 [2020-11-28 07:29:42,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-28 07:29:42,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:29:42,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 07:29:42,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:42,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:42,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046654043] [2020-11-28 07:29:42,957 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:42,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044518244] [2020-11-28 07:29:42,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [280913892] [2020-11-28 07:29:42,961 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-28 07:29:42,961 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:29:42,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:29:42,962 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:29:42,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:29:43,007 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:29:43,340 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:29:43,754 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-28 07:29:43,887 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-28 07:29:44,097 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-11-28 07:29:44,475 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-28 07:29:44,758 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-28 07:29:45,046 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-28 07:29:45,437 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-28 07:29:45,438 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:29:45,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:29:45,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-11-28 07:29:45,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231890875] [2020-11-28 07:29:45,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 07:29:45,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:45,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 07:29:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-11-28 07:29:45,440 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2020-11-28 07:29:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:45,679 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-11-28 07:29:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 07:29:45,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-11-28 07:29:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:45,680 INFO L225 Difference]: With dead ends: 51 [2020-11-28 07:29:45,680 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:29:45,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2020-11-28 07:29:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:29:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 07:29:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 07:29:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-11-28 07:29:45,691 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 30 [2020-11-28 07:29:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:45,691 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-11-28 07:29:45,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 07:29:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-11-28 07:29:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 07:29:45,693 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:45,693 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2020-11-28 07:29:45,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:45,916 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:45,917 INFO L82 PathProgramCache]: Analyzing trace with hash 242324136, now seen corresponding path program 3 times [2020-11-28 07:29:45,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:45,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084257906] [2020-11-28 07:29:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:45,932 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:29:45,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028868162] [2020-11-28 07:29:45,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/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 [2020-11-28 07:29:46,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 07:29:46,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-28 07:29:46,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:29:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:29:46,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:29:46,151 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:29:46,161 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:29:46,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:46,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:29:46 BoogieIcfgContainer [2020-11-28 07:29:46,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:29:46,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:29:46,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:29:46,462 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:29:46,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:23" (3/4) ... [2020-11-28 07:29:46,464 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:29:46,533 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_648b83c2-daf4-44f1-9fdb-669b230cb666/bin/utaipan/witness.graphml [2020-11-28 07:29:46,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:29:46,534 INFO L168 Benchmark]: Toolchain (without parser) took 24484.74 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 76.2 MB in the beginning and 64.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:46,535 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:46,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.08 ms. Allocated memory is still 107.0 MB. Free memory was 76.0 MB in the beginning and 85.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:46,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 107.0 MB. Free memory was 85.5 MB in the beginning and 84.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:46,536 INFO L168 Benchmark]: Boogie Preprocessor took 53.11 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 83.1 MB in the end (delta: 763.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:46,537 INFO L168 Benchmark]: RCFGBuilder took 596.30 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 62.9 MB in the end (delta: 19.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:46,537 INFO L168 Benchmark]: TraceAbstraction took 23420.24 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 62.5 MB in the beginning and 68.6 MB in the end (delta: -6.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:46,538 INFO L168 Benchmark]: Witness Printer took 71.65 ms. Allocated memory is still 130.0 MB. Free memory was 68.6 MB in the beginning and 64.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:46,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.08 ms. Allocated memory is still 107.0 MB. Free memory was 76.0 MB in the beginning and 85.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 107.0 MB. Free memory was 85.5 MB in the beginning and 84.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.11 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 83.1 MB in the end (delta: 763.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 596.30 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 62.9 MB in the end (delta: 19.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23420.24 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 62.5 MB in the beginning and 68.6 MB in the end (delta: -6.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 71.65 ms. Allocated memory is still 130.0 MB. Free memory was 68.6 MB in the beginning and 64.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND FALSE !(counter++<10) [L16] COND TRUE !(cond) VAL [counter=11] [L9] __assert_fail("0", "mannadiv.c", 9, "reach_error") VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.2s, OverallIterations: 8, TraceHistogramMax: 11, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 83 SDslu, 167 SDs, 0 SdLazy, 142 SolverSat, 43 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=7, 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, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 10451 SizeOfPredicates, 42 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 9/180 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 incorrect! Received shutdown request...