./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.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_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/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 75e3ae35873fc976ba5f9091947bbca66fbdab4b ....................................................................................................................................................................................................................................................................................................................................................................... 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 07:27:49,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:49,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:49,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:49,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:49,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:49,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:49,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:49,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:49,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:49,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:49,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:49,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:49,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:49,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:49,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:49,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:49,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:49,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:49,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:49,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:49,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:49,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:49,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:49,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:49,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:49,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:49,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:49,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:49,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:49,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:49,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:49,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:49,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:49,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:49,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:49,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:49,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:49,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:49,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:49,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:49,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:27:49,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:49,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:49,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:49,417 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:49,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:49,418 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:49,418 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:27:49,418 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:49,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:49,419 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:27:49,419 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:27:49,419 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:49,420 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:27:49,420 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:27:49,420 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:27:49,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:49,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:49,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:27:49,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:49,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:49,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:49,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:49,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:49,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:49,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:49,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:49,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:49,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:49,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:49,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:49,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:49,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:49,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:49,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:49,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:49,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:27:49,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:27:49,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:49,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:49,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:49,427 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_9066e32c-b9de-4b2b-8c56-42256631b9aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75e3ae35873fc976ba5f9091947bbca66fbdab4b [2020-11-28 07:27:49,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:49,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:49,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:49,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:49,725 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:49,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2020-11-28 07:27:49,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/data/31efd2c8f/10b818fbd7d048478f66bcaeed00f49e/FLAGe37047e90 [2020-11-28 07:27:50,280 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:50,281 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2020-11-28 07:27:50,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/data/31efd2c8f/10b818fbd7d048478f66bcaeed00f49e/FLAGe37047e90 [2020-11-28 07:27:50,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/data/31efd2c8f/10b818fbd7d048478f66bcaeed00f49e [2020-11-28 07:27:50,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:50,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:50,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:50,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:50,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:50,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:50,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6936030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50, skipping insertion in model container [2020-11-28 07:27:50,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:50,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:50,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:50,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:50,910 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:50,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:50,974 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:50,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50 WrapperNode [2020-11-28 07:27:50,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:50,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:50,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:50,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:50,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:50,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:51,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:51,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:51,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:51,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:51,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:51,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:51,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:51,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:51,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/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 07:27:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:27:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:51,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:51,562 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:51,562 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 07:27:51,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:51 BoogieIcfgContainer [2020-11-28 07:27:51,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:51,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:51,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:51,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:51,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:50" (1/3) ... [2020-11-28 07:27:51,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2c990d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:51, skipping insertion in model container [2020-11-28 07:27:51,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50" (2/3) ... [2020-11-28 07:27:51,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2c990d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:51, skipping insertion in model container [2020-11-28 07:27:51,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:51" (3/3) ... [2020-11-28 07:27:51,579 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c [2020-11-28 07:27:51,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:51,605 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:27:51,622 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:27:51,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:51,646 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:51,647 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:51,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:51,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:51,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:51,648 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:51,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 07:27:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:27:51,665 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:51,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:27:51,666 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:51,672 INFO L82 PathProgramCache]: Analyzing trace with hash 80563898, now seen corresponding path program 1 times [2020-11-28 07:27:51,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:51,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152040563] [2020-11-28 07:27:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:51,797 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 07:27:51,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152040563] [2020-11-28 07:27:51,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:51,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:27:51,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201105082] [2020-11-28 07:27:51,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:27:51,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:51,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:27:51,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:27:51,818 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 07:27:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:51,833 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-11-28 07:27:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:27:51,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 07:27:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:51,843 INFO L225 Difference]: With dead ends: 25 [2020-11-28 07:27:51,843 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:27:51,846 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 07:27:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:27:51,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:27:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:27:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 07:27:51,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-11-28 07:27:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:51,880 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 07:27:51,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:27:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 07:27:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:27:51,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:51,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:27:51,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:27:51,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:51,882 INFO L82 PathProgramCache]: Analyzing trace with hash 79643357, now seen corresponding path program 1 times [2020-11-28 07:27:51,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:51,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750549347] [2020-11-28 07:27:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:51,902 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:27:51,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616391695] [2020-11-28 07:27:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/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 07:27:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:51,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 07:27:51,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:52,087 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 07:27:52,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:52,111 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:27:52,149 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 07:27:52,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750549347] [2020-11-28 07:27:52,150 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:27:52,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616391695] [2020-11-28 07:27:52,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:52,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:27:52,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517577728] [2020-11-28 07:27:52,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:27:52,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:52,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:27:52,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:52,153 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-28 07:27:54,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:54,370 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-11-28 07:27:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:27:54,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-28 07:27:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:54,372 INFO L225 Difference]: With dead ends: 33 [2020-11-28 07:27:54,372 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 07:27:54,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:27:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 07:27:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2020-11-28 07:27:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:27:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 07:27:54,378 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 5 [2020-11-28 07:27:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:54,379 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 07:27:54,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:27:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 07:27:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:27:54,379 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:54,379 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:54,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:27:54,593 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:54,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1161392796, now seen corresponding path program 1 times [2020-11-28 07:27:54,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:54,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509915657] [2020-11-28 07:27:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:54,608 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:27:54,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793545835] [2020-11-28 07:27:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/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 07:27:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:54,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:54,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:54,688 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:27:54,688 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:27:54,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:27:54,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:27:54 BoogieIcfgContainer [2020-11-28 07:27:54,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:27:54,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:27:54,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:27:54,934 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:27:54,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:51" (3/4) ... [2020-11-28 07:27:54,936 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:27:54,990 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9066e32c-b9de-4b2b-8c56-42256631b9aa/bin/utaipan/witness.graphml [2020-11-28 07:27:54,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:27:54,993 INFO L168 Benchmark]: Toolchain (without parser) took 4334.54 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 58.6 MB in the end (delta: 18.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:54,994 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:54,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.79 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 86.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:54,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.59 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 84.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:54,996 INFO L168 Benchmark]: Boogie Preprocessor took 29.82 ms. Allocated memory is still 109.1 MB. Free memory was 84.9 MB in the beginning and 83.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:54,997 INFO L168 Benchmark]: RCFGBuilder took 513.10 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 67.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:54,997 INFO L168 Benchmark]: TraceAbstraction took 3367.01 ms. Allocated memory is still 109.1 MB. Free memory was 66.5 MB in the beginning and 60.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:54,998 INFO L168 Benchmark]: Witness Printer took 57.50 ms. Allocated memory is still 109.1 MB. Free memory was 60.7 MB in the beginning and 58.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:55,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.79 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 86.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.59 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 84.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.82 ms. Allocated memory is still 109.1 MB. Free memory was 84.9 MB in the beginning and 83.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 513.10 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 67.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3367.01 ms. Allocated memory is still 109.1 MB. Free memory was 66.5 MB in the beginning and 60.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Witness Printer took 57.50 ms. Allocated memory is still 109.1 MB. Free memory was 60.7 MB in the beginning and 58.6 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: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int counter = 0; [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0] [L31] EXPR counter++ VAL [counter=1] [L31] COND TRUE counter++<1 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=1] [L31] EXPR counter++ VAL [counter=2] [L31] COND FALSE !(counter++<1) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x [L14] COND TRUE !(cond) VAL [counter=2] [L7] __assert_fail("0", "bresenham-ll.c", 7, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 18 SDslu, 20 SDs, 0 SdLazy, 21 SolverSat, 7 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 304 SizeOfPredicates, 9 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...