./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex03-1.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_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/trex03-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/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 734dad1b540ff96271402e7042ab8251e149cda4 ............................................................................................................................................................................................................................................................................. 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 22:53:27,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:53:27,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:53:27,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:53:27,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:53:27,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:53:27,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:53:27,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:53:27,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:53:27,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:53:27,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:53:27,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:53:27,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:53:27,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:53:27,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:53:27,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:53:27,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:53:27,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:53:27,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:53:27,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:53:27,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:53:27,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:53:27,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:53:27,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:53:27,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:53:27,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:53:27,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:53:27,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:53:27,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:53:27,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:53:27,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:53:27,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:53:27,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:53:27,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:53:27,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:53:27,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:53:27,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:53:27,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:53:27,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:53:27,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:53:27,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:53:27,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:53:27,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:53:27,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:53:27,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:53:27,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:53:27,356 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:53:27,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:53:27,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:53:27,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:53:27,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:53:27,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:53:27,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:53:27,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:53:27,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:53:27,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:53:27,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:53:27,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:53:27,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:53:27,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:53:27,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:53:27,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:53:27,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:53:27,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:53:27,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:53:27,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:53:27,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:53:27,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:53:27,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:53:27,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:53:27,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:53:27,364 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_ca21b6ee-6466-4e15-8ee0-8a10551bc496/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 734dad1b540ff96271402e7042ab8251e149cda4 [2020-11-29 22:53:27,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:53:27,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:53:27,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:53:27,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:53:27,706 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:53:27,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/../../sv-benchmarks/c/loops/trex03-1.c [2020-11-29 22:53:27,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/data/cf5c254f7/b4fe8612821743a7b093f91d85b14fca/FLAGfc09ae6da [2020-11-29 22:53:28,282 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:53:28,283 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/sv-benchmarks/c/loops/trex03-1.c [2020-11-29 22:53:28,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/data/cf5c254f7/b4fe8612821743a7b093f91d85b14fca/FLAGfc09ae6da [2020-11-29 22:53:28,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/data/cf5c254f7/b4fe8612821743a7b093f91d85b14fca [2020-11-29 22:53:28,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:53:28,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:53:28,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:53:28,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:53:28,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:53:28,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:28,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5156ab9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28, skipping insertion in model container [2020-11-29 22:53:28,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:28,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:53:28,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:53:28,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:53:28,956 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:53:28,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:53:28,996 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:53:28,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28 WrapperNode [2020-11-29 22:53:28,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:53:29,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:53:29,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:53:29,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:53:29,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:53:29,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:53:29,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:53:29,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:53:29,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... [2020-11-29 22:53:29,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:53:29,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:53:29,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:53:29,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:53:29,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/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 22:53:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:53:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:53:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:53:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:53:29,527 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:53:29,529 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 22:53:29,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:53:29 BoogieIcfgContainer [2020-11-29 22:53:29,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:53:29,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:53:29,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:53:29,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:53:29,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:53:28" (1/3) ... [2020-11-29 22:53:29,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4041ab7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:53:29, skipping insertion in model container [2020-11-29 22:53:29,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:28" (2/3) ... [2020-11-29 22:53:29,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4041ab7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:53:29, skipping insertion in model container [2020-11-29 22:53:29,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:53:29" (3/3) ... [2020-11-29 22:53:29,540 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2020-11-29 22:53:29,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:53:29,556 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:53:29,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:53:29,605 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:53:29,606 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:53:29,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:53:29,606 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:53:29,606 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:53:29,606 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:53:29,607 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:53:29,607 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:53:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 22:53:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 22:53:29,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:53:29,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:53:29,631 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:53:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:53:29,637 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2020-11-29 22:53:29,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:53:29,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160586924] [2020-11-29 22:53:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:53:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:53:29,805 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 22:53:29,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160586924] [2020-11-29 22:53:29,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:53:29,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:53:29,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051808587] [2020-11-29 22:53:29,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:53:29,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:53:29,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:53:29,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:53:29,830 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-29 22:53:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:53:29,845 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-11-29 22:53:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:53:29,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 22:53:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:53:29,856 INFO L225 Difference]: With dead ends: 23 [2020-11-29 22:53:29,856 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 22:53:29,868 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 22:53:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 22:53:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 22:53:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 22:53:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-29 22:53:29,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2020-11-29 22:53:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:53:29,905 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-29 22:53:29,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:53:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-29 22:53:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 22:53:29,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:53:29,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:53:29,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:53:29,907 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:53:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:53:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash 889645751, now seen corresponding path program 1 times [2020-11-29 22:53:29,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:53:29,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022420560] [2020-11-29 22:53:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:53:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:53:29,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:53:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:53:29,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:53:30,016 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:53:30,016 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:53:30,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:53:30,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:53:30 BoogieIcfgContainer [2020-11-29 22:53:30,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:53:30,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:53:30,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:53:30,050 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:53:30,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:53:29" (3/4) ... [2020-11-29 22:53:30,052 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:53:30,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ca21b6ee-6466-4e15-8ee0-8a10551bc496/bin/uautomizer/witness.graphml [2020-11-29 22:53:30,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:53:30,089 INFO L168 Benchmark]: Toolchain (without parser) took 1427.24 ms. Allocated memory is still 109.1 MB. Free memory was 79.8 MB in the beginning and 50.3 MB in the end (delta: 29.5 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:30,090 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 40.0 MB in the beginning and 39.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:53:30,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.07 ms. Allocated memory is still 109.1 MB. Free memory was 79.8 MB in the beginning and 87.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:30,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.50 ms. Allocated memory is still 109.1 MB. Free memory was 87.4 MB in the beginning and 86.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:30,092 INFO L168 Benchmark]: Boogie Preprocessor took 36.77 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:53:30,092 INFO L168 Benchmark]: RCFGBuilder took 455.49 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 72.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:30,093 INFO L168 Benchmark]: TraceAbstraction took 516.43 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 51.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:30,094 INFO L168 Benchmark]: Witness Printer took 37.59 ms. Allocated memory is still 109.1 MB. Free memory was 51.8 MB in the beginning and 50.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:30,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 40.0 MB in the beginning and 39.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.07 ms. Allocated memory is still 109.1 MB. Free memory was 79.8 MB in the beginning and 87.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.50 ms. Allocated memory is still 109.1 MB. Free memory was 87.4 MB in the beginning and 86.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.77 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 455.49 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 72.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 516.43 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 51.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 37.59 ms. Allocated memory is still 109.1 MB. Free memory was 51.8 MB in the beginning and 50.3 MB in the end (delta: 1.5 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L18] unsigned int d1=1, d2=1, d3=1; [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L21] COND FALSE !(x1>0 && x2>0 && x3>0) [L6] COND TRUE !(cond) [L3] __assert_fail("0", "trex03-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...