./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/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 69a8cdfb90da21c880e2ea8c68ae8d9efb957756 ................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-5842f4b [2018-11-18 11:46:22,722 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:46:22,723 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:46:22,730 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:46:22,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:46:22,731 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:46:22,732 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:46:22,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:46:22,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:46:22,734 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:46:22,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:46:22,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:46:22,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:46:22,737 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:46:22,737 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:46:22,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:46:22,738 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:46:22,740 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:46:22,741 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:46:22,742 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:46:22,743 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:46:22,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:46:22,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:46:22,745 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:46:22,745 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:46:22,746 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:46:22,747 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:46:22,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:46:22,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:46:22,749 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:46:22,749 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:46:22,749 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:46:22,749 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:46:22,750 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:46:22,750 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:46:22,751 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:46:22,751 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 11:46:22,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:46:22,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:46:22,762 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:46:22,762 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:46:22,762 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:46:22,763 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:46:22,763 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:46:22,763 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:46:22,763 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:46:22,763 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:46:22,763 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:46:22,764 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:46:22,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:46:22,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:46:22,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:46:22,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:46:22,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:46:22,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:46:22,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:46:22,765 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:46:22,766 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:46:22,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:46:22,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:46:22,766 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_d6c60ceb-aad5-418e-8944-591e0ffdb743/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 -> 69a8cdfb90da21c880e2ea8c68ae8d9efb957756 [2018-11-18 11:46:22,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:46:22,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:46:22,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:46:22,798 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:46:22,798 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:46:22,799 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/../../sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i [2018-11-18 11:46:22,834 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/data/98d906010/2939a3c9fdc149b9ab7d5d0ec5073b86/FLAGf28a148fe [2018-11-18 11:46:23,134 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:46:23,135 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i [2018-11-18 11:46:23,140 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/data/98d906010/2939a3c9fdc149b9ab7d5d0ec5073b86/FLAGf28a148fe [2018-11-18 11:46:23,149 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/data/98d906010/2939a3c9fdc149b9ab7d5d0ec5073b86 [2018-11-18 11:46:23,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:46:23,152 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:46:23,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:46:23,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:46:23,155 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:46:23,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170afedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23, skipping insertion in model container [2018-11-18 11:46:23,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:46:23,177 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:46:23,287 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:46:23,290 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:46:23,302 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:46:23,312 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:46:23,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23 WrapperNode [2018-11-18 11:46:23,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:46:23,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:46:23,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:46:23,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:46:23,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... [2018-11-18 11:46:23,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:46:23,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:46:23,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:46:23,335 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:46:23,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/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 [2018-11-18 11:46:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:46:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:46:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 11:46:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:46:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 11:46:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 11:46:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 11:46:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 11:46:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:46:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:46:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:46:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:46:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:46:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:46:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:46:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 11:46:23,547 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:46:23,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:46:23 BoogieIcfgContainer [2018-11-18 11:46:23,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:46:23,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:46:23,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:46:23,551 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:46:23,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:46:23" (1/3) ... [2018-11-18 11:46:23,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a27596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:46:23, skipping insertion in model container [2018-11-18 11:46:23,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:23" (2/3) ... [2018-11-18 11:46:23,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a27596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:46:23, skipping insertion in model container [2018-11-18 11:46:23,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:46:23" (3/3) ... [2018-11-18 11:46:23,554 INFO L112 eAbstractionObserver]: Analyzing ICFG skippedu_false-unreach-call.i [2018-11-18 11:46:23,562 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:46:23,567 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:46:23,577 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:46:23,596 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:46:23,597 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:46:23,597 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:46:23,597 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:46:23,597 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:46:23,597 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:46:23,597 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:46:23,597 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:46:23,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:46:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-18 11:46:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 11:46:23,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:46:23,615 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:46:23,616 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:46:23,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:46:23,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1798653287, now seen corresponding path program 1 times [2018-11-18 11:46:23,622 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:46:23,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:46:23,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:23,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:46:23,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:46:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:46:23,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:46:23,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:46:23,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:46:23,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:46:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:46:23,724 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-11-18 11:46:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:46:23,737 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2018-11-18 11:46:23,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:46:23,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-11-18 11:46:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:46:23,744 INFO L225 Difference]: With dead ends: 50 [2018-11-18 11:46:23,744 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 11:46:23,746 INFO L604 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 [2018-11-18 11:46:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 11:46:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 11:46:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 11:46:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-18 11:46:23,767 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2018-11-18 11:46:23,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:46:23,768 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-18 11:46:23,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:46:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-18 11:46:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:46:23,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:46:23,768 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:46:23,769 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:46:23,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:46:23,769 INFO L82 PathProgramCache]: Analyzing trace with hash -542838627, now seen corresponding path program 1 times [2018-11-18 11:46:23,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:46:23,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:46:23,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:23,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:46:23,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:46:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:46:23,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:46:23,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:46:23,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:46:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:46:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:46:23,877 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2018-11-18 11:46:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:46:23,940 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-11-18 11:46:23,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:46:23,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-18 11:46:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:46:23,941 INFO L225 Difference]: With dead ends: 44 [2018-11-18 11:46:23,941 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 11:46:23,942 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:46:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 11:46:23,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-18 11:46:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 11:46:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-11-18 11:46:23,946 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2018-11-18 11:46:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:46:23,947 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-11-18 11:46:23,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:46:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-11-18 11:46:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:46:23,947 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:46:23,948 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:46:23,948 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:46:23,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:46:23,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1697775982, now seen corresponding path program 1 times [2018-11-18 11:46:23,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:46:23,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:46:23,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:23,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:46:23,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:46:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:46:24,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:46:24,286 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/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 [2018-11-18 11:46:24,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:46:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:46:24,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:46:24,382 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 11:46:24,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 11:46:24,388 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:46:24,391 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:46:24,394 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:46:24,395 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-18 11:46:24,410 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-11-18 11:46:24,413 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-11-18 11:46:24,413 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:46:24,414 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:46:24,417 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:46:24,417 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2018-11-18 11:46:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:46:24,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:46:24,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2018-11-18 11:46:24,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 11:46:24,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 11:46:24,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:46:24,476 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 16 states. [2018-11-18 11:46:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:46:24,704 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2018-11-18 11:46:24,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 11:46:24,705 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-11-18 11:46:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:46:24,706 INFO L225 Difference]: With dead ends: 68 [2018-11-18 11:46:24,706 INFO L226 Difference]: Without dead ends: 66 [2018-11-18 11:46:24,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2018-11-18 11:46:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-18 11:46:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2018-11-18 11:46:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 11:46:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-18 11:46:24,718 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 23 [2018-11-18 11:46:24,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:46:24,718 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-18 11:46:24,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 11:46:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-18 11:46:24,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:46:24,719 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:46:24,719 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:46:24,719 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:46:24,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:46:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2010385300, now seen corresponding path program 1 times [2018-11-18 11:46:24,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:46:24,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:46:24,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:24,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:46:24,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:46:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:46:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:46:24,756 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:46:24,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:46:24 BoogieIcfgContainer [2018-11-18 11:46:24,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:46:24,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:46:24,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:46:24,780 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:46:24,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:46:23" (3/4) ... [2018-11-18 11:46:24,782 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 11:46:24,818 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d6c60ceb-aad5-418e-8944-591e0ffdb743/bin-2019/uautomizer/witness.graphml [2018-11-18 11:46:24,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:46:24,819 INFO L168 Benchmark]: Toolchain (without parser) took 1667.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 961.8 MB in the beginning and 963.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 143.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:46:24,820 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:46:24,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.36 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:46:24,821 INFO L168 Benchmark]: Boogie Preprocessor took 20.95 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 945.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:46:24,822 INFO L168 Benchmark]: RCFGBuilder took 213.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:46:24,822 INFO L168 Benchmark]: TraceAbstraction took 1230.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.0 MB in the end (delta: 160.4 MB). Peak memory consumption was 160.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:46:24,822 INFO L168 Benchmark]: Witness Printer took 39.12 ms. Allocated memory is still 1.2 GB. Free memory is still 963.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:46:24,824 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.36 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.95 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 945.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 213.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1230.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.0 MB in the end (delta: 160.4 MB). Peak memory consumption was 160.4 MB. Max. memory is 11.5 GB. * Witness Printer took 39.12 ms. Allocated memory is still 1.2 GB. Free memory is still 963.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L8] int SIZE; VAL [\old(SIZE)=10, SIZE=0] [L12] SIZE = __VERIFIER_nondet_int() [L13] COND TRUE SIZE > 1 [L15] int i; [L16] FCALL int a[SIZE]; VAL [\old(SIZE)=0, a={11:0}, SIZE=2] [L18] COND FALSE !(SIZE % 2 != 0) [L21] i = 1 VAL [\old(SIZE)=0, a={11:0}, i=1, SIZE=2] [L21] COND TRUE i <= SIZE/2 [L23] EXPR, FCALL a[2*i-2] VAL [\old(SIZE)=0, a={11:0}, a[2*i-2]=1, i=1, SIZE=2] [L23] COND FALSE !(a[2*i-2] > i) [L27] EXPR, FCALL a[2*i-1] VAL [\old(SIZE)=0, a={11:0}, a[2*i-1]=0, i=1, SIZE=2] [L27] COND FALSE !(a[2*i-1] > i) [L21] i++ VAL [\old(SIZE)=0, a={11:0}, i=2, SIZE=2] [L21] COND FALSE !(i <= SIZE/2) VAL [\old(SIZE)=0, a={11:0}, i=2, SIZE=2] [L33] i = 0 VAL [\old(SIZE)=0, a={11:0}, i=0, SIZE=2] [L33] COND TRUE i < SIZE [L35] EXPR, FCALL a[i] VAL [\old(SIZE)=0, a={11:0}, a[i]=1, i=0, SIZE=2] [L35] CALL __VERIFIER_assert( a[i] <= i ) VAL [\old(cond)=0, \old(SIZE)=0, SIZE=2] [L5] COND TRUE !(cond) VAL [\old(cond)=0, \old(SIZE)=0, cond=0, SIZE=2] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(SIZE)=0, cond=0, SIZE=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 167 SDslu, 103 SDs, 0 SdLazy, 177 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, 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, 3 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 9949 SizeOfPredicates, 7 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...