./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/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 0.1.23-1dbac8b [2018-10-26 23:49:06,713 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:49:06,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:49:06,723 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:49:06,723 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:49:06,724 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:49:06,725 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:49:06,726 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:49:06,728 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:49:06,729 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:49:06,730 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:49:06,730 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:49:06,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:49:06,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:49:06,732 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:49:06,732 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:49:06,733 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:49:06,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:49:06,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:49:06,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:49:06,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:49:06,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:49:06,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:49:06,742 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:49:06,742 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:49:06,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:49:06,744 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:49:06,744 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:49:06,745 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:49:06,747 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:49:06,747 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:49:06,747 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:49:06,748 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:49:06,748 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:49:06,749 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:49:06,749 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:49:06,749 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 23:49:06,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:49:06,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:49:06,762 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:49:06,762 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:49:06,762 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:49:06,763 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:49:06,763 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 23:49:06,763 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:49:06,763 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:49:06,763 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:49:06,763 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:49:06,764 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:49:06,764 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:49:06,764 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:49:06,764 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:49:06,764 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:49:06,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:49:06,764 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:49:06,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:49:06,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:49:06,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:49:06,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:49:06,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:49:06,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:49:06,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:49:06,767 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:49:06,768 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 23:49:06,768 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:49:06,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:49:06,768 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/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 [2018-10-26 23:49:06,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:49:06,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:49:06,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:49:06,817 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:49:06,817 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:49:06,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.i [2018-10-26 23:49:06,872 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/data/6f5e180d7/98bcd8bee11145bea980b4476ac2f171/FLAGc9abfe299 [2018-10-26 23:49:07,200 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:49:07,200 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.i [2018-10-26 23:49:07,205 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/data/6f5e180d7/98bcd8bee11145bea980b4476ac2f171/FLAGc9abfe299 [2018-10-26 23:49:07,215 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/data/6f5e180d7/98bcd8bee11145bea980b4476ac2f171 [2018-10-26 23:49:07,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:49:07,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:49:07,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:49:07,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:49:07,222 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:49:07,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78eab100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07, skipping insertion in model container [2018-10-26 23:49:07,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:49:07,246 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:49:07,359 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:49:07,361 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:49:07,370 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:49:07,379 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:49:07,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07 WrapperNode [2018-10-26 23:49:07,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:49:07,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:49:07,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:49:07,380 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:49:07,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... [2018-10-26 23:49:07,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:49:07,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:49:07,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:49:07,403 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:49:07,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/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 [2018-10-26 23:49:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:49:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:49:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-10-26 23:49:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:49:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 23:49:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-10-26 23:49:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:49:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:49:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:49:07,728 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:49:07,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:49:07 BoogieIcfgContainer [2018-10-26 23:49:07,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:49:07,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:49:07,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:49:07,732 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:49:07,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:49:07" (1/3) ... [2018-10-26 23:49:07,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1421759e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:49:07, skipping insertion in model container [2018-10-26 23:49:07,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:49:07" (2/3) ... [2018-10-26 23:49:07,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1421759e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:49:07, skipping insertion in model container [2018-10-26 23:49:07,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:49:07" (3/3) ... [2018-10-26 23:49:07,736 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int_true-termination.c_false-unreach-call_1.i [2018-10-26 23:49:07,745 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:49:07,751 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:49:07,765 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:49:07,790 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 23:49:07,791 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:49:07,791 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:49:07,791 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:49:07,791 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:49:07,791 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:49:07,791 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:49:07,791 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:49:07,792 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:49:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-26 23:49:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 23:49:07,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:49:07,812 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:49:07,814 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:49:07,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:07,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1931529068, now seen corresponding path program 1 times [2018-10-26 23:49:07,821 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:49:07,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:49:07,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:07,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:07,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:49:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:49:08,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:49:08,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:49:08,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:49:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:49:08,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:49:08,080 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-10-26 23:49:08,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:49:08,183 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2018-10-26 23:49:08,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:49:08,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-26 23:49:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:49:08,190 INFO L225 Difference]: With dead ends: 34 [2018-10-26 23:49:08,191 INFO L226 Difference]: Without dead ends: 16 [2018-10-26 23:49:08,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:49:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-26 23:49:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-10-26 23:49:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 23:49:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-26 23:49:08,222 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-10-26 23:49:08,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:49:08,222 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-26 23:49:08,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:49:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-26 23:49:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 23:49:08,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:49:08,223 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:49:08,223 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:49:08,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:08,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1867367452, now seen corresponding path program 1 times [2018-10-26 23:49:08,223 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:49:08,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:49:08,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:08,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:08,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:49:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:49:08,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:49:08,275 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:49:08,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:49:08,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:49:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:49:08,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 23:49:08,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-26 23:49:08,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:49:08,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:49:08,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:49:08,345 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-10-26 23:49:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:49:08,384 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-26 23:49:08,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:49:08,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-26 23:49:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:49:08,385 INFO L225 Difference]: With dead ends: 22 [2018-10-26 23:49:08,385 INFO L226 Difference]: Without dead ends: 19 [2018-10-26 23:49:08,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:49:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-26 23:49:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-10-26 23:49:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-26 23:49:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-26 23:49:08,391 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-10-26 23:49:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:49:08,391 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-26 23:49:08,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:49:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-26 23:49:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:49:08,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:49:08,392 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:49:08,392 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:49:08,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:08,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1889622124, now seen corresponding path program 2 times [2018-10-26 23:49:08,392 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:49:08,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:49:08,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:08,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:08,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:49:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:49:08,416 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 23:49:08,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:49:08 BoogieIcfgContainer [2018-10-26 23:49:08,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:49:08,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:49:08,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:49:08,432 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:49:08,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:49:07" (3/4) ... [2018-10-26 23:49:08,435 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 23:49:08,469 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c1ec14fa-ccf7-49aa-8b3c-7f65fa0cac09/bin-2019/uautomizer/witness.graphml [2018-10-26 23:49:08,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:49:08,470 INFO L168 Benchmark]: Toolchain (without parser) took 1253.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -147.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2018-10-26 23:49:08,472 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:49:08,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.29 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:49:08,472 INFO L168 Benchmark]: Boogie Preprocessor took 23.02 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:49:08,472 INFO L168 Benchmark]: RCFGBuilder took 325.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -203.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:49:08,473 INFO L168 Benchmark]: TraceAbstraction took 702.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2018-10-26 23:49:08,475 INFO L168 Benchmark]: Witness Printer took 37.81 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. [2018-10-26 23:49:08,477 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.29 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.02 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 325.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -203.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 702.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * Witness Printer took 37.81 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; VAL [i=0] [L13] COND TRUE i<5 [L14] i++ VAL [i=1] [L16] COND TRUE (i!=3) ? (0) : __blast_assert () VAL [i=1] [L13] COND TRUE i<5 [L14] i++ VAL [i=2] [L16] COND TRUE (i!=3) ? (0) : __blast_assert () VAL [i=2] [L13] COND TRUE i<5 [L14] i++ VAL [i=3] [L16] COND FALSE !((i!=3) ? (0) : __blast_assert ()) VAL [i=3] [L16] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 8 SDslu, 37 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 711 SizeOfPredicates, 1 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...