./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87afddccfd1da763b81be9f487d95a8fd1750032 ................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-25 08:50:29,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:50:29,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:50:29,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:50:29,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:50:29,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:50:29,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:50:29,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:50:29,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:50:29,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:50:29,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:50:29,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:50:29,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:50:29,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:50:29,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:50:29,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:50:29,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:50:29,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:50:29,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:50:29,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:50:29,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:50:29,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:50:29,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:50:29,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:50:29,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:50:29,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:50:29,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:50:29,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:50:29,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:50:29,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:50:29,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:50:29,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:50:29,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:50:29,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:50:29,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:50:29,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:50:29,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:50:29,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:50:29,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:50:29,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:50:29,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:50:29,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:50:29,414 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:50:29,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:50:29,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:50:29,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:50:29,415 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:50:29,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:50:29,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:50:29,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:50:29,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:50:29,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:50:29,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:50:29,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:50:29,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:50:29,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:50:29,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:50:29,418 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:50:29,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:50:29,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:50:29,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:50:29,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:50:29,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:50:29,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:50:29,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:50:29,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:50:29,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:50:29,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:50:29,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:50:29,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:50:29,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_39e1c7a7-1143-441a-a08e-dba98e250791/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(__VERIFIER_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 -> 87afddccfd1da763b81be9f487d95a8fd1750032 [2019-11-25 08:50:29,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:50:29,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:50:29,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:50:29,580 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:50:29,581 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:50:29,582 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2019-11-25 08:50:29,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/data/91c63ee6e/f7bbf25ec8dd4781bcefa7c8822b8b13/FLAG3325b2aaa [2019-11-25 08:50:30,019 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:50:30,020 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2019-11-25 08:50:30,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/data/91c63ee6e/f7bbf25ec8dd4781bcefa7c8822b8b13/FLAG3325b2aaa [2019-11-25 08:50:30,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/data/91c63ee6e/f7bbf25ec8dd4781bcefa7c8822b8b13 [2019-11-25 08:50:30,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:50:30,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:50:30,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:30,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:50:30,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:50:30,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30, skipping insertion in model container [2019-11-25 08:50:30,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:50:30,075 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:50:30,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:30,270 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:50:30,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:30,375 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:50:30,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30 WrapperNode [2019-11-25 08:50:30,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:30,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:30,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:50:30,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:50:30,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:30,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:50:30,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:50:30,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:50:30,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... [2019-11-25 08:50:30,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:50:30,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:50:30,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:50:30,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:50:30,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/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 [2019-11-25 08:50:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:50:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:50:30,626 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:50:30,626 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:50:30,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:30 BoogieIcfgContainer [2019-11-25 08:50:30,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:50:30,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:50:30,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:50:30,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:50:30,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:50:30" (1/3) ... [2019-11-25 08:50:30,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3bd18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:30, skipping insertion in model container [2019-11-25 08:50:30,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:30" (2/3) ... [2019-11-25 08:50:30,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3bd18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:30, skipping insertion in model container [2019-11-25 08:50:30,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:30" (3/3) ... [2019-11-25 08:50:30,638 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2019-11-25 08:50:30,647 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:50:30,652 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:50:30,661 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:50:30,678 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:50:30,679 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:50:30,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:50:30,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:50:30,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:50:30,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:50:30,679 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:50:30,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:50:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-25 08:50:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:50:30,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:30,700 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:50:30,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2019-11-25 08:50:30,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:30,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021837551] [2019-11-25 08:50:30,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:30,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021837551] [2019-11-25 08:50:30,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:30,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:50:30,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254586163] [2019-11-25 08:50:30,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:50:30,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:30,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:50:30,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:50:30,847 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-25 08:50:30,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:30,902 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2019-11-25 08:50:30,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:50:30,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-25 08:50:30,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:30,912 INFO L225 Difference]: With dead ends: 20 [2019-11-25 08:50:30,912 INFO L226 Difference]: Without dead ends: 8 [2019-11-25 08:50:30,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:50:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-25 08:50:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-25 08:50:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:50:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-25 08:50:30,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-11-25 08:50:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:30,951 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-25 08:50:30,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:50:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-25 08:50:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:50:30,951 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:30,951 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-11-25 08:50:30,952 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:30,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:30,953 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2019-11-25 08:50:30,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:30,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481746614] [2019-11-25 08:50:30,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:31,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481746614] [2019-11-25 08:50:31,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415435202] [2019-11-25 08:50:31,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/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 [2019-11-25 08:50:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:31,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:31,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:31,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:31,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:50:31,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060252599] [2019-11-25 08:50:31,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:50:31,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:31,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:50:31,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:50:31,066 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-25 08:50:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:31,097 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-25 08:50:31,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:50:31,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-25 08:50:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:31,098 INFO L225 Difference]: With dead ends: 12 [2019-11-25 08:50:31,099 INFO L226 Difference]: Without dead ends: 10 [2019-11-25 08:50:31,099 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:50:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-25 08:50:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-25 08:50:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:50:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-25 08:50:31,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-25 08:50:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:31,102 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-25 08:50:31,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:50:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-25 08:50:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:50:31,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:31,103 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-11-25 08:50:31,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:31,312 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:31,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:31,313 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2019-11-25 08:50:31,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:31,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416082341] [2019-11-25 08:50:31,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:31,337 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:31,337 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:50:31,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:50:31 BoogieIcfgContainer [2019-11-25 08:50:31,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:50:31,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:50:31,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:50:31,351 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:50:31,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:30" (3/4) ... [2019-11-25 08:50:31,353 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:50:31,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_39e1c7a7-1143-441a-a08e-dba98e250791/bin/uautomizer/witness.graphml [2019-11-25 08:50:31,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:50:31,402 INFO L168 Benchmark]: Toolchain (without parser) took 1357.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.5 MB in the beginning and 1.1 GB in the end (delta: -114.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:31,403 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:31,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.5 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:31,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:31,408 INFO L168 Benchmark]: Boogie Preprocessor took 17.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:31,409 INFO L168 Benchmark]: RCFGBuilder took 200.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:31,414 INFO L168 Benchmark]: TraceAbstraction took 722.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:31,414 INFO L168 Benchmark]: Witness Printer took 49.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:31,423 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.5 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 722.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 11.5 GB. * Witness Printer took 49.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 1 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...