./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_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 [2020-11-29 19:47:10,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:47:10,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:47:10,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:47:10,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:47:10,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:47:10,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:47:10,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:47:10,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:47:10,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:47:10,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:47:10,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:47:10,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:47:10,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:47:10,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:47:10,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:47:10,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:47:10,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:47:10,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:47:10,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:47:10,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:47:10,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:47:10,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:47:10,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:47:10,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:47:10,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:47:10,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:47:10,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:47:10,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:47:10,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:47:10,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:47:10,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:47:10,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:47:10,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:47:10,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:47:10,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:47:10,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:47:10,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:47:10,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:47:10,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:47:10,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:47:10,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:47:10,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:47:10,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:47:10,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:47:10,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:47:10,446 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:47:10,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:47:10,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:47:10,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:47:10,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:47:10,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:47:10,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:47:10,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:47:10,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:47:10,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:47:10,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:47:10,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:47:10,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:47:10,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:47:10,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:47:10,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:47:10,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:47:10,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:47:10,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:47:10,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:47:10,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:47:10,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:47:10,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:47:10,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:47:10,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:47:10,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75e3ae35873fc976ba5f9091947bbca66fbdab4b [2020-11-29 19:47:10,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:47:10,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:47:10,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:47:10,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:47:10,738 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:47:10,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2020-11-29 19:47:10,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/data/88123c0ed/4e9af477bb4449ef978a2ce420082c58/FLAGae146bd6a [2020-11-29 19:47:11,407 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:47:11,409 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2020-11-29 19:47:11,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/data/88123c0ed/4e9af477bb4449ef978a2ce420082c58/FLAGae146bd6a [2020-11-29 19:47:11,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/data/88123c0ed/4e9af477bb4449ef978a2ce420082c58 [2020-11-29 19:47:11,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:47:11,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:47:11,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:47:11,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:47:11,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:47:11,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:47:11" (1/1) ... [2020-11-29 19:47:11,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d7b132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:11, skipping insertion in model container [2020-11-29 19:47:11,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:47:11" (1/1) ... [2020-11-29 19:47:11,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:47:11,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:47:12,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:47:12,066 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:47:12,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:47:12,132 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:47:12,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12 WrapperNode [2020-11-29 19:47:12,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:47:12,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:47:12,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:47:12,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:47:12,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:47:12,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:47:12,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:47:12,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:47:12,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... [2020-11-29 19:47:12,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:47:12,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:47:12,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:47:12,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:47:12,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:47:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:47:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:47:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:47:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:47:12,684 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:47:12,685 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 19:47:12,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:47:12 BoogieIcfgContainer [2020-11-29 19:47:12,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:47:12,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:47:12,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:47:12,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:47:12,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:47:11" (1/3) ... [2020-11-29 19:47:12,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5ffa24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:47:12, skipping insertion in model container [2020-11-29 19:47:12,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:47:12" (2/3) ... [2020-11-29 19:47:12,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5ffa24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:47:12, skipping insertion in model container [2020-11-29 19:47:12,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:47:12" (3/3) ... [2020-11-29 19:47:12,700 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c [2020-11-29 19:47:12,712 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:47:12,718 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 19:47:12,732 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 19:47:12,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:47:12,774 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:47:12,774 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:47:12,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:47:12,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:47:12,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:47:12,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:47:12,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:47:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-29 19:47:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:47:12,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:47:12,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:47:12,802 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:47:12,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:47:12,810 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2020-11-29 19:47:12,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:47:12,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173647958] [2020-11-29 19:47:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:47:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:47:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:47:13,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173647958] [2020-11-29 19:47:13,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:47:13,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:47:13,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312216181] [2020-11-29 19:47:13,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:47:13,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:47:13,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:47:13,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:47:13,058 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-29 19:47:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:47:13,086 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-11-29 19:47:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:47:13,088 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 19:47:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:47:13,100 INFO L225 Difference]: With dead ends: 34 [2020-11-29 19:47:13,101 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 19:47:13,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:47:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 19:47:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 19:47:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 19:47:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 19:47:13,153 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2020-11-29 19:47:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:47:13,154 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 19:47:13,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:47:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 19:47:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:47:13,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:47:13,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:47:13,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:47:13,157 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:47:13,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:47:13,160 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 19:47:13,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:47:13,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542715076] [2020-11-29 19:47:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:47:13,193 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:47:13,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493428081] [2020-11-29 19:47:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:47:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:47:13,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:47:13,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:47:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:47:13,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542715076] [2020-11-29 19:47:13,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:47:13,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493428081] [2020-11-29 19:47:13,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:47:13,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:47:13,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906165320] [2020-11-29 19:47:13,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:47:13,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:47:13,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:47:13,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:47:13,409 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-11-29 19:47:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:47:13,500 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-11-29 19:47:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:47:13,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 19:47:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:47:13,503 INFO L225 Difference]: With dead ends: 30 [2020-11-29 19:47:13,503 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 19:47:13,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:47:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 19:47:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-11-29 19:47:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 19:47:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-29 19:47:13,511 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2020-11-29 19:47:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:47:13,512 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 19:47:13,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:47:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-29 19:47:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:47:13,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:47:13,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:47:13,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:47:13,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:47:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:47:13,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1114333688, now seen corresponding path program 1 times [2020-11-29 19:47:13,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:47:13,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317182492] [2020-11-29 19:47:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:47:13,755 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:47:13,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393890895] [2020-11-29 19:47:13,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:47:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:47:13,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:47:13,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:47:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:47:13,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317182492] [2020-11-29 19:47:13,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:47:13,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393890895] [2020-11-29 19:47:13,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:47:13,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 19:47:13,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608203974] [2020-11-29 19:47:13,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:47:13,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:47:13,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:47:13,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:47:13,986 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-11-29 19:47:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:47:14,022 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-11-29 19:47:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:47:14,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 19:47:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:47:14,023 INFO L225 Difference]: With dead ends: 26 [2020-11-29 19:47:14,023 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 19:47:14,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:47:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 19:47:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 19:47:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 19:47:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-29 19:47:14,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-11-29 19:47:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:47:14,028 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-29 19:47:14,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:47:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-29 19:47:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:47:14,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:47:14,030 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:47:14,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:47:14,250 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:47:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:47:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 184570261, now seen corresponding path program 1 times [2020-11-29 19:47:14,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:47:14,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234868812] [2020-11-29 19:47:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:47:14,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:47:14,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530054963] [2020-11-29 19:47:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:47:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:47:14,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:47:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:47:14,333 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:47:14,353 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:47:14,354 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:47:14,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:47:14,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:47:14 BoogieIcfgContainer [2020-11-29 19:47:14,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:47:14,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:47:14,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:47:14,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:47:14,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:47:12" (3/4) ... [2020-11-29 19:47:14,615 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:47:14,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6ca93199-4ebc-4235-a044-e9e8665b658a/bin/uautomizer/witness.graphml [2020-11-29 19:47:14,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:47:14,684 INFO L168 Benchmark]: Toolchain (without parser) took 2916.77 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.2 MB in the beginning and 57.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:14,684 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.4 MB in the end (delta: 43.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:47:14,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.19 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 61.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:14,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.39 ms. Allocated memory is still 83.9 MB. Free memory was 61.0 MB in the beginning and 59.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:14,686 INFO L168 Benchmark]: Boogie Preprocessor took 49.24 ms. Allocated memory is still 83.9 MB. Free memory was 59.4 MB in the beginning and 58.4 MB in the end (delta: 967.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:47:14,687 INFO L168 Benchmark]: RCFGBuilder took 455.52 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 45.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:14,688 INFO L168 Benchmark]: TraceAbstraction took 1918.89 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 59.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 713.0 kB. Max. memory is 16.1 GB. [2020-11-29 19:47:14,688 INFO L168 Benchmark]: Witness Printer took 70.34 ms. Allocated memory is still 100.7 MB. Free memory was 59.6 MB in the beginning and 57.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:14,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.4 MB in the end (delta: 43.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.19 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 61.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.39 ms. Allocated memory is still 83.9 MB. Free memory was 61.0 MB in the beginning and 59.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.24 ms. Allocated memory is still 83.9 MB. Free memory was 59.4 MB in the beginning and 58.4 MB in the end (delta: 967.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 455.52 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 45.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1918.89 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 59.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 713.0 kB. Max. memory is 16.1 GB. * Witness Printer took 70.34 ms. Allocated memory is still 100.7 MB. Free memory was 59.6 MB in the beginning and 57.5 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; VAL [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)) VAL [counter=1] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=1] [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, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 25 SDslu, 29 SDs, 0 SdLazy, 28 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 509 SizeOfPredicates, 10 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/3 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...