./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c --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_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/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 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 ................................................................................................................................................................................................................................................................................................................... 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 09:07:46,161 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:07:46,162 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:07:46,169 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:07:46,169 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:07:46,170 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:07:46,170 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:07:46,172 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:07:46,173 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:07:46,173 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:07:46,174 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:07:46,174 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:07:46,175 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:07:46,176 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:07:46,176 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:07:46,177 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:07:46,177 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:07:46,179 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:07:46,180 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:07:46,180 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:07:46,181 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:07:46,182 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:07:46,184 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:07:46,184 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:07:46,184 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:07:46,185 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:07:46,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:07:46,186 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:07:46,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:07:46,187 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:07:46,187 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:07:46,188 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:07:46,188 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:07:46,188 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:07:46,189 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:07:46,189 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:07:46,189 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 09:07:46,197 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:07:46,197 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:07:46,197 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:07:46,197 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:07:46,198 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:07:46,198 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:07:46,198 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:07:46,198 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:07:46,199 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:07:46,200 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:07:46,200 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:07:46,200 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:07:46,200 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:07:46,200 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:07:46,200 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:07:46,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:07:46,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:07:46,201 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:07:46,201 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:07:46,201 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:07:46,201 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:07:46,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:07:46,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:07:46,201 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_14a2202a-db72-42a6-a114-5c4557084faa/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 -> 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 [2018-11-18 09:07:46,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:07:46,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:07:46,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:07:46,234 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:07:46,234 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:07:46,235 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-11-18 09:07:46,276 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/data/e071d6c21/d532b5efe4ff44eea4b3c29ffc385189/FLAG45eacc785 [2018-11-18 09:07:46,675 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:07:46,675 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-11-18 09:07:46,679 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/data/e071d6c21/d532b5efe4ff44eea4b3c29ffc385189/FLAG45eacc785 [2018-11-18 09:07:46,690 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/data/e071d6c21/d532b5efe4ff44eea4b3c29ffc385189 [2018-11-18 09:07:46,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:07:46,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:07:46,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:07:46,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:07:46,696 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:07:46,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff47436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46, skipping insertion in model container [2018-11-18 09:07:46,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:07:46,717 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:07:46,826 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:07:46,833 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:07:46,844 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:07:46,853 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:07:46,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46 WrapperNode [2018-11-18 09:07:46,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:07:46,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:07:46,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:07:46,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:07:46,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... [2018-11-18 09:07:46,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:07:46,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:07:46,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:07:46,877 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:07:46,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/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 09:07:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:07:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:07:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:07:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 09:07:47,087 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:07:47,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:47 BoogieIcfgContainer [2018-11-18 09:07:47,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:07:47,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:07:47,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:07:47,091 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:07:47,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:07:46" (1/3) ... [2018-11-18 09:07:47,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0129e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:07:47, skipping insertion in model container [2018-11-18 09:07:47,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:46" (2/3) ... [2018-11-18 09:07:47,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0129e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:07:47, skipping insertion in model container [2018-11-18 09:07:47,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:47" (3/3) ... [2018-11-18 09:07:47,095 INFO L112 eAbstractionObserver]: Analyzing ICFG test29_false-unreach-call_true-termination.c [2018-11-18 09:07:47,102 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:07:47,111 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:07:47,126 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:07:47,154 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:07:47,155 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:07:47,155 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:07:47,155 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:07:47,155 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:07:47,155 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:07:47,155 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:07:47,155 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:07:47,155 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:07:47,171 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-18 09:07:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 09:07:47,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:07:47,177 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:07:47,179 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:07:47,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:07:47,183 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2018-11-18 09:07:47,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:07:47,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:07:47,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:07:47,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:07:47,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:07:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:07:47,341 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 09:07:47,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:07:47,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:07:47,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:07:47,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:07:47,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:07:47,354 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-11-18 09:07:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:07:47,416 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2018-11-18 09:07:47,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:07:47,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 09:07:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:07:47,426 INFO L225 Difference]: With dead ends: 34 [2018-11-18 09:07:47,427 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 09:07:47,430 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:07:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 09:07:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-11-18 09:07:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 09:07:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-18 09:07:47,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2018-11-18 09:07:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:07:47,452 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-18 09:07:47,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:07:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-18 09:07:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 09:07:47,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:07:47,453 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:07:47,453 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:07:47,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:07:47,453 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2018-11-18 09:07:47,453 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:07:47,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:07:47,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:07:47,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:07:47,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:07:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:07:47,530 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 09:07:47,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:07:47,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:07:47,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:07:47,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:07:47,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:07:47,533 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2018-11-18 09:07:47,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:07:47,591 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-18 09:07:47,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 09:07:47,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-18 09:07:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:07:47,592 INFO L225 Difference]: With dead ends: 23 [2018-11-18 09:07:47,592 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 09:07:47,593 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:07:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 09:07:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 09:07:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 09:07:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-11-18 09:07:47,596 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2018-11-18 09:07:47,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:07:47,597 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-11-18 09:07:47,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:07:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-11-18 09:07:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 09:07:47,597 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:07:47,597 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:07:47,597 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:07:47,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:07:47,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2018-11-18 09:07:47,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:07:47,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:07:47,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:07:47,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:07:47,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:07:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:07:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:07:47,636 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:07:47,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:07:47 BoogieIcfgContainer [2018-11-18 09:07:47,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:07:47,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:07:47,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:07:47,653 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:07:47,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:47" (3/4) ... [2018-11-18 09:07:47,655 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 09:07:47,682 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_14a2202a-db72-42a6-a114-5c4557084faa/bin-2019/uautomizer/witness.graphml [2018-11-18 09:07:47,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:07:47,683 INFO L168 Benchmark]: Toolchain (without parser) took 990.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -90.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:07:47,684 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:07:47,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.43 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:07:47,685 INFO L168 Benchmark]: Boogie Preprocessor took 23.43 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:07:47,686 INFO L168 Benchmark]: RCFGBuilder took 211.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:07:47,686 INFO L168 Benchmark]: TraceAbstraction took 563.99 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: 54.8 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:07:47,687 INFO L168 Benchmark]: Witness Printer took 30.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:07:47,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.43 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.43 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 211.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 563.99 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: 54.8 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. * Witness Printer took 30.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] FCALL union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] COND FALSE, EXPR !(n ? &d1 : &d2) VAL [d1={7:0}, d2={6:0}, n=0, n ? &d1 : &d2={6:0}] [L15] union dummy *pd = n ? &d1 : &d2; [L16] FCALL d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] FCALL pd->b = 0 VAL [d1={7:0}, d2={6:0}, n=0, pd={6:0}] [L22] pd == &d2 && d1.a != 0 [L22] EXPR, FCALL d1.a [L22] pd == &d2 && d1.a != 0 VAL [d1={7:0}, d1.a=1, d2={6:0}, n=0, pd={6:0}, pd == &d2 && d1.a != 0=1] [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() VAL [d1={7:0}, d2={6:0}, n=0, pd={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 22 SDslu, 40 SDs, 0 SdLazy, 51 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...