./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.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_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/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 1b2717e5ac522d385ef548b8caf01421a2c4872b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-22 13:08:26,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:26,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:26,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:26,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:26,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:26,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:26,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:26,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:26,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:26,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:26,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:26,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:26,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:26,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:26,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:26,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:26,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:26,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:26,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:26,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:26,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:26,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:26,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:26,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:26,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:26,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:26,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:26,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:26,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:26,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:26,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:26,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:26,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:26,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:26,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:26,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:26,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:26,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:26,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:26,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:26,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:08:26,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:26,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:26,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:26,714 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:26,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:26,715 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:26,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:26,715 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:26,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:26,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:26,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:26,717 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:26,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:26,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:26,718 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:26,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:26,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:26,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:26,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:26,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:26,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:08:26,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:26,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:08:26,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:26,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:26,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:08:26,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:26,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:08:26,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:26,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:26,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:26,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:26,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:26,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:26,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:08:26,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:26,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:26,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:08:26,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:26,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:26,728 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_e71e18ed-6189-4a3d-a422-7e68462c30b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2717e5ac522d385ef548b8caf01421a2c4872b [2020-11-22 13:08:27,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:27,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:27,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:27,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:27,082 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:27,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c [2020-11-22 13:08:27,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/data/5946aa35b/3a8a1179bc9a442c9cd0bff8040112f3/FLAG2d39360b2 [2020-11-22 13:08:27,701 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:27,702 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c [2020-11-22 13:08:27,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/data/5946aa35b/3a8a1179bc9a442c9cd0bff8040112f3/FLAG2d39360b2 [2020-11-22 13:08:28,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/data/5946aa35b/3a8a1179bc9a442c9cd0bff8040112f3 [2020-11-22 13:08:28,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:28,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:28,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:28,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:28,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:28,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ce5f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28, skipping insertion in model container [2020-11-22 13:08:28,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:28,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:28,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:28,288 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:28,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:28,333 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:28,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28 WrapperNode [2020-11-22 13:08:28,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:28,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:28,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:28,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:28,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:28,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:28,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:28,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:28,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... [2020-11-22 13:08:28,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:28,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:28,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:28,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:28,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/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 [2020-11-22 13:08:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:08:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:29,011 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:29,012 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-22 13:08:29,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:29 BoogieIcfgContainer [2020-11-22 13:08:29,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:29,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:29,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:29,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:29,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:28" (1/3) ... [2020-11-22 13:08:29,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a401cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:29, skipping insertion in model container [2020-11-22 13:08:29,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:28" (2/3) ... [2020-11-22 13:08:29,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a401cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:29, skipping insertion in model container [2020-11-22 13:08:29,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:29" (3/3) ... [2020-11-22 13:08:29,024 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound2.c [2020-11-22 13:08:29,036 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:29,040 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:08:29,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:08:29,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:29,085 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:08:29,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:29,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:29,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:29,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:29,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:29,086 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-22 13:08:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:08:29,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:29,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:08:29,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:29,116 INFO L82 PathProgramCache]: Analyzing trace with hash 100358031, now seen corresponding path program 1 times [2020-11-22 13:08:29,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:29,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053830898] [2020-11-22 13:08:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:29,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053830898] [2020-11-22 13:08:29,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:29,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:29,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249192348] [2020-11-22 13:08:29,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:08:29,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:29,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:08:29,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:08:29,385 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-22 13:08:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:29,402 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-11-22 13:08:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:08:29,403 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:08:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:29,419 INFO L225 Difference]: With dead ends: 25 [2020-11-22 13:08:29,420 INFO L226 Difference]: Without dead ends: 11 [2020-11-22 13:08:29,433 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 [2020-11-22 13:08:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-22 13:08:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-22 13:08:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 13:08:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-22 13:08:29,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-11-22 13:08:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:29,472 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-22 13:08:29,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:08:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-22 13:08:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:08:29,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:29,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:08:29,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:08:29,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash 99468274, now seen corresponding path program 1 times [2020-11-22 13:08:29,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:29,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334130482] [2020-11-22 13:08:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:29,528 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:29,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080569587] [2020-11-22 13:08:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/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 [2020-11-22 13:08:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:29,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 13:08:29,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:29,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:29,709 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:08:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:29,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334130482] [2020-11-22 13:08:29,731 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:29,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080569587] [2020-11-22 13:08:29,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:29,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:08:29,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422820097] [2020-11-22 13:08:29,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:08:29,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:08:29,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:08:29,735 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-22 13:08:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:31,886 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-11-22 13:08:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:08:31,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 13:08:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:31,891 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:08:31,891 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 13:08:31,892 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 [2020-11-22 13:08:31,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 13:08:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 18. [2020-11-22 13:08:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:08:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-22 13:08:31,897 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 5 [2020-11-22 13:08:31,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:31,897 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-22 13:08:31,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:08:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-22 13:08:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:08:31,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:31,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:08:32,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:08:32,111 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1211487480, now seen corresponding path program 1 times [2020-11-22 13:08:32,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:32,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643393656] [2020-11-22 13:08:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:32,126 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:32,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575222078] [2020-11-22 13:08:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/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 [2020-11-22 13:08:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:32,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:08:32,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:32,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:32,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643393656] [2020-11-22 13:08:32,234 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:32,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575222078] [2020-11-22 13:08:32,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:32,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 13:08:32,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923552495] [2020-11-22 13:08:32,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:08:32,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:32,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:08:32,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:08:32,252 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2020-11-22 13:08:32,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:32,294 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-11-22 13:08:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:08:32,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-22 13:08:32,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:32,295 INFO L225 Difference]: With dead ends: 26 [2020-11-22 13:08:32,295 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:08:32,296 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 [2020-11-22 13:08:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:08:32,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-11-22 13:08:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:08:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-22 13:08:32,300 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2020-11-22 13:08:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:32,301 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-22 13:08:32,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:08:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-22 13:08:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:08:32,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:32,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:32,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:32,502 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:32,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:32,503 INFO L82 PathProgramCache]: Analyzing trace with hash -262222527, now seen corresponding path program 1 times [2020-11-22 13:08:32,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:32,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723983118] [2020-11-22 13:08:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:32,516 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:32,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840798748] [2020-11-22 13:08:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/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 [2020-11-22 13:08:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:32,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:08:32,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:32,582 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-22 13:08:32,583 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:08:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:32,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:32,697 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:08:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:32,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723983118] [2020-11-22 13:08:32,758 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:32,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840798748] [2020-11-22 13:08:32,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:32,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-11-22 13:08:32,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602946412] [2020-11-22 13:08:32,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:08:32,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:32,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:08:32,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:08:32,760 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 8 states. [2020-11-22 13:08:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:38,996 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-22 13:08:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:08:38,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-22 13:08:38,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:38,998 INFO L225 Difference]: With dead ends: 22 [2020-11-22 13:08:38,998 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 13:08:38,998 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 [2020-11-22 13:08:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 13:08:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 13:08:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:08:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-22 13:08:39,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2020-11-22 13:08:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:39,003 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-22 13:08:39,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:08:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-22 13:08:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:08:39,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:39,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-11-22 13:08:39,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:39,205 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash 694035666, now seen corresponding path program 1 times [2020-11-22 13:08:39,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:39,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491116209] [2020-11-22 13:08:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:39,224 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:39,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282442310] [2020-11-22 13:08:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/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 [2020-11-22 13:08:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:39,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:08:39,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:39,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:39,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491116209] [2020-11-22 13:08:39,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:39,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282442310] [2020-11-22 13:08:39,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [347851905] [2020-11-22 13:08:39,386 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:08:39,386 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:08:39,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:08:39,396 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:08:39,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:08:39,540 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:08:40,173 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:08:40,765 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-11-22 13:08:40,983 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-22 13:08:41,193 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-11-22 13:08:41,580 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-22 13:08:42,169 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-22 13:08:42,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:42,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:08:42,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-22 13:08:42,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182563969] [2020-11-22 13:08:42,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:08:42,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:42,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:08:42,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:08:42,174 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-11-22 13:08:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:42,241 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-22 13:08:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:08:42,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-22 13:08:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:42,243 INFO L225 Difference]: With dead ends: 25 [2020-11-22 13:08:42,243 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 13:08:42,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:08:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 13:08:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 13:08:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:08:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-22 13:08:42,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 13 [2020-11-22 13:08:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:42,247 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-22 13:08:42,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:08:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-22 13:08:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:08:42,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:42,248 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-22 13:08:42,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:42,459 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 40232488, now seen corresponding path program 1 times [2020-11-22 13:08:42,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:42,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307444789] [2020-11-22 13:08:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:42,470 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:42,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026081875] [2020-11-22 13:08:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/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 [2020-11-22 13:08:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:42,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:42,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:42,607 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:08:42,623 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:08:42,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-22 13:08:42,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:42 BoogieIcfgContainer [2020-11-22 13:08:42,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:42,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:42,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:42,876 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:42,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:29" (3/4) ... [2020-11-22 13:08:42,878 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:08:42,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e71e18ed-6189-4a3d-a422-7e68462c30b9/bin/utaipan/witness.graphml [2020-11-22 13:08:42,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:42,930 INFO L168 Benchmark]: Toolchain (without parser) took 14851.20 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.7 MB in the beginning and 77.0 MB in the end (delta: -6.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:42,930 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:42,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.18 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 76.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:42,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 98.6 MB. Free memory was 76.7 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:42,932 INFO L168 Benchmark]: Boogie Preprocessor took 18.72 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 74.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:42,933 INFO L168 Benchmark]: RCFGBuilder took 623.76 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 54.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:42,933 INFO L168 Benchmark]: TraceAbstraction took 13859.82 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 79.1 MB in the end (delta: -25.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:42,934 INFO L168 Benchmark]: Witness Printer took 53.01 ms. Allocated memory is still 119.5 MB. Free memory was 79.1 MB in the beginning and 77.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:42,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.18 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 76.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 98.6 MB. Free memory was 76.7 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.72 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 74.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 623.76 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 54.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13859.82 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 79.1 MB in the end (delta: -25.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.01 ms. Allocated memory is still 119.5 MB. Free memory was 79.1 MB in the beginning and 77.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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++<2 [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++<2 [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 FALSE !(counter++<2) [L16] COND TRUE !(cond) VAL [counter=3] [L9] __assert_fail("0", "mannadiv.c", 9, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 52 SDslu, 76 SDs, 0 SdLazy, 70 SolverSat, 20 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, 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, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1691 SizeOfPredicates, 25 NumberOfNonLiveVariables, 275 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 16/20 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...