./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test27_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_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test27_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/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 8d15e59fd1b84d7219285b33cc166f567d0bcf3e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:43:58,138 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:43:58,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:43:58,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:43:58,146 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:43:58,147 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:43:58,148 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:43:58,149 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:43:58,150 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:43:58,151 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:43:58,152 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:43:58,152 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:43:58,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:43:58,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:43:58,154 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:43:58,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:43:58,155 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:43:58,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:43:58,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:43:58,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:43:58,159 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:43:58,161 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:43:58,162 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:43:58,162 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:43:58,163 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:43:58,163 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:43:58,164 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:43:58,165 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:43:58,166 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:43:58,167 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:43:58,167 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:43:58,167 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:43:58,167 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:43:58,167 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:43:58,168 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:43:58,169 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:43:58,169 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 11:43:58,176 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:43:58,177 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:43:58,177 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:43:58,177 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:43:58,178 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:43:58,178 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:43:58,178 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:43:58,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:43:58,178 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:43:58,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:43:58,179 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:43:58,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:43:58,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:43:58,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:43:58,179 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:43:58,179 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:43:58,180 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:43:58,180 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:43:58,180 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:43:58,180 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:43:58,180 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:43:58,180 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:43:58,181 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:43:58,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:43:58,181 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:43:58,181 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:43:58,181 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:43:58,181 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:43:58,181 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:43:58,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:43:58,182 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_4c44d6a2-c792-4015-a057-8e0c3a46102c/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 -> 8d15e59fd1b84d7219285b33cc166f567d0bcf3e [2018-11-18 11:43:58,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:43:58,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:43:58,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:43:58,215 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:43:58,216 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:43:58,216 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test27_false-unreach-call_true-termination.c [2018-11-18 11:43:58,250 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/data/94f59b232/0a3264a9df3e40e39191c67b11e6a98a/FLAG0d4e53dc9 [2018-11-18 11:43:58,637 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:43:58,637 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/sv-benchmarks/c/ldv-regression/test27_false-unreach-call_true-termination.c [2018-11-18 11:43:58,641 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/data/94f59b232/0a3264a9df3e40e39191c67b11e6a98a/FLAG0d4e53dc9 [2018-11-18 11:43:58,652 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/data/94f59b232/0a3264a9df3e40e39191c67b11e6a98a [2018-11-18 11:43:58,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:43:58,655 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:43:58,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:43:58,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:43:58,657 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:43:58,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33092fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58, skipping insertion in model container [2018-11-18 11:43:58,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:43:58,682 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:43:58,803 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:43:58,808 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:43:58,820 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:43:58,829 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:43:58,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58 WrapperNode [2018-11-18 11:43:58,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:43:58,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:43:58,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:43:58,830 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:43:58,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... [2018-11-18 11:43:58,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:43:58,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:43:58,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:43:58,895 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:43:58,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/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 11:43:58,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:43:58,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:43:58,941 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-18 11:43:58,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:43:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:43:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 11:43:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:43:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:43:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:43:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 11:43:59,142 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:43:59,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:59 BoogieIcfgContainer [2018-11-18 11:43:59,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:43:59,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:43:59,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:43:59,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:43:59,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:43:58" (1/3) ... [2018-11-18 11:43:59,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff979a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:59, skipping insertion in model container [2018-11-18 11:43:59,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:58" (2/3) ... [2018-11-18 11:43:59,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff979a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:59, skipping insertion in model container [2018-11-18 11:43:59,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:59" (3/3) ... [2018-11-18 11:43:59,148 INFO L112 eAbstractionObserver]: Analyzing ICFG test27_false-unreach-call_true-termination.c [2018-11-18 11:43:59,155 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:43:59,161 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:43:59,173 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:43:59,198 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:43:59,198 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:43:59,199 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:43:59,199 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:43:59,199 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:43:59,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:43:59,199 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:43:59,199 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:43:59,199 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:43:59,209 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-11-18 11:43:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:43:59,213 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:43:59,213 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 11:43:59,214 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:43:59,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:43:59,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1801897061, now seen corresponding path program 1 times [2018-11-18 11:43:59,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:43:59,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:43:59,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:43:59,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:43:59,312 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 11:43:59,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:43:59,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:43:59,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:43:59,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:43:59,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:43:59,325 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-11-18 11:43:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:43:59,336 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2018-11-18 11:43:59,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:43:59,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-18 11:43:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:43:59,343 INFO L225 Difference]: With dead ends: 45 [2018-11-18 11:43:59,343 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 11:43:59,345 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 11:43:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 11:43:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-18 11:43:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 11:43:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-18 11:43:59,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2018-11-18 11:43:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:43:59,368 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-18 11:43:59,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:43:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-18 11:43:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 11:43:59,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:43:59,368 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:43:59,369 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:43:59,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:43:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1616588955, now seen corresponding path program 1 times [2018-11-18 11:43:59,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:43:59,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:43:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:43:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:43:59,414 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 11:43:59,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:43:59,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:43:59,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:43:59,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:43:59,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:43:59,417 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-11-18 11:43:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:43:59,437 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-18 11:43:59,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:43:59,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-18 11:43:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:43:59,438 INFO L225 Difference]: With dead ends: 38 [2018-11-18 11:43:59,438 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 11:43:59,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:43:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 11:43:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-11-18 11:43:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 11:43:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-18 11:43:59,441 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2018-11-18 11:43:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:43:59,442 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-18 11:43:59,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:43:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-18 11:43:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:43:59,442 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:43:59,443 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 11:43:59,443 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:43:59,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:43:59,443 INFO L82 PathProgramCache]: Analyzing trace with hash -82078787, now seen corresponding path program 1 times [2018-11-18 11:43:59,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:43:59,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:43:59,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:43:59,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:43:59,505 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 11:43:59,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:43:59,505 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/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 11:43:59,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:43:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:43:59,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:43:59,582 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 11:43:59,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:43:59,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-18 11:43:59,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:43:59,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:43:59,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:43:59,607 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-11-18 11:43:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:43:59,627 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-11-18 11:43:59,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:43:59,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-18 11:43:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:43:59,628 INFO L225 Difference]: With dead ends: 41 [2018-11-18 11:43:59,628 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 11:43:59,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:43:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 11:43:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-11-18 11:43:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 11:43:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-18 11:43:59,633 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2018-11-18 11:43:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:43:59,633 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-18 11:43:59,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:43:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-18 11:43:59,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 11:43:59,633 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:43:59,634 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:43:59,634 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:43:59,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:43:59,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1788099237, now seen corresponding path program 2 times [2018-11-18 11:43:59,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:43:59,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:43:59,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:43:59,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:43:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:43:59,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:43:59,699 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:43:59,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:43:59,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:43:59,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:43:59,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:43:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:43:59,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:43:59,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 11:43:59,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:43:59,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:43:59,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:43:59,795 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2018-11-18 11:43:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:43:59,811 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-11-18 11:43:59,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:43:59,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-11-18 11:43:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:43:59,812 INFO L225 Difference]: With dead ends: 44 [2018-11-18 11:43:59,812 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 11:43:59,812 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:43:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 11:43:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-11-18 11:43:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 11:43:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-11-18 11:43:59,815 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2018-11-18 11:43:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:43:59,816 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-11-18 11:43:59,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:43:59,816 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-11-18 11:43:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 11:43:59,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:43:59,817 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:43:59,817 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:43:59,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:43:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash 799655677, now seen corresponding path program 3 times [2018-11-18 11:43:59,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:43:59,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:43:59,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:43:59,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:43:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:43:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:43:59,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:43:59,901 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:43:59,912 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:43:59,969 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 11:43:59,969 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:43:59,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:43:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:43:59,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:43:59,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-18 11:43:59,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:43:59,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:43:59,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:44:00,000 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2018-11-18 11:44:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:44:00,025 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-11-18 11:44:00,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:44:00,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-11-18 11:44:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:44:00,026 INFO L225 Difference]: With dead ends: 47 [2018-11-18 11:44:00,026 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 11:44:00,027 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:44:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 11:44:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-11-18 11:44:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:44:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-18 11:44:00,030 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2018-11-18 11:44:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:44:00,030 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-18 11:44:00,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:44:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-18 11:44:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 11:44:00,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:44:00,031 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:44:00,031 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:44:00,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:44:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2056664549, now seen corresponding path program 4 times [2018-11-18 11:44:00,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:44:00,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:44:00,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:00,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:44:00,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:44:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:00,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:44:00,117 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:44:00,128 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:44:00,152 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:44:00,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:44:00,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:44:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:00,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:44:00,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-18 11:44:00,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:44:00,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:44:00,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:44:00,190 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2018-11-18 11:44:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:44:00,213 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-11-18 11:44:00,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:44:00,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 11:44:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:44:00,214 INFO L225 Difference]: With dead ends: 50 [2018-11-18 11:44:00,214 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 11:44:00,214 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:44:00,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 11:44:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2018-11-18 11:44:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:44:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-11-18 11:44:00,218 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2018-11-18 11:44:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:44:00,218 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-11-18 11:44:00,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:44:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-11-18 11:44:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 11:44:00,219 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:44:00,220 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:44:00,220 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:44:00,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:44:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1494518333, now seen corresponding path program 5 times [2018-11-18 11:44:00,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:44:00,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:44:00,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:00,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:44:00,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:44:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:00,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:44:00,320 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:44:00,330 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:44:00,683 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 11:44:00,683 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:44:00,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:44:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:00,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:44:00,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-18 11:44:00,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:44:00,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:44:00,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:44:00,715 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2018-11-18 11:44:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:44:00,748 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-11-18 11:44:00,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:44:00,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-11-18 11:44:00,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:44:00,749 INFO L225 Difference]: With dead ends: 53 [2018-11-18 11:44:00,749 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:44:00,749 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:44:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:44:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-11-18 11:44:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 11:44:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-18 11:44:00,752 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2018-11-18 11:44:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:44:00,753 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-18 11:44:00,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:44:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-18 11:44:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 11:44:00,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:44:00,754 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:44:00,754 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:44:00,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:44:00,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1149320923, now seen corresponding path program 6 times [2018-11-18 11:44:00,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:44:00,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:44:00,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:00,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:44:00,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:44:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:00,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:44:00,838 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:44:00,845 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:44:01,686 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 11:44:01,687 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:44:01,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:44:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:01,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:44:01,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-18 11:44:01,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 11:44:01,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 11:44:01,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:44:01,717 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 10 states. [2018-11-18 11:44:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:44:01,744 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-11-18 11:44:01,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:44:01,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2018-11-18 11:44:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:44:01,745 INFO L225 Difference]: With dead ends: 56 [2018-11-18 11:44:01,745 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 11:44:01,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:44:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 11:44:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-11-18 11:44:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 11:44:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-11-18 11:44:01,750 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 38 [2018-11-18 11:44:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:44:01,750 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-11-18 11:44:01,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 11:44:01,750 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-11-18 11:44:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 11:44:01,751 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:44:01,751 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:44:01,751 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:44:01,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:44:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash -475013763, now seen corresponding path program 7 times [2018-11-18 11:44:01,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:44:01,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:44:01,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:01,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:44:01,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:44:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:01,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:44:01,844 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:44:01,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:44:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:44:01,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:44:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:01,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:44:01,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-18 11:44:01,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 11:44:01,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 11:44:01,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:44:01,915 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 11 states. [2018-11-18 11:44:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:44:01,941 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-11-18 11:44:01,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:44:01,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-11-18 11:44:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:44:01,942 INFO L225 Difference]: With dead ends: 59 [2018-11-18 11:44:01,943 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 11:44:01,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:44:01,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 11:44:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-11-18 11:44:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 11:44:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-11-18 11:44:01,953 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 41 [2018-11-18 11:44:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:44:01,953 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-11-18 11:44:01,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 11:44:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-11-18 11:44:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 11:44:01,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:44:01,954 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:44:01,954 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:44:01,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:44:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash 366879643, now seen corresponding path program 8 times [2018-11-18 11:44:01,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:44:01,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:44:01,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:01,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:44:01,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:44:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:02,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:44:02,028 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:44:02,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:44:02,075 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:44:02,075 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:44:02,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:44:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:02,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:44:02,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-18 11:44:02,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 11:44:02,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 11:44:02,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:44:02,117 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 12 states. [2018-11-18 11:44:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:44:02,139 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-11-18 11:44:02,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:44:02,140 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2018-11-18 11:44:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:44:02,140 INFO L225 Difference]: With dead ends: 62 [2018-11-18 11:44:02,140 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 11:44:02,141 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:44:02,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 11:44:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2018-11-18 11:44:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 11:44:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-11-18 11:44:02,144 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2018-11-18 11:44:02,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:44:02,144 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-11-18 11:44:02,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 11:44:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-11-18 11:44:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 11:44:02,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:44:02,145 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:44:02,145 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:44:02,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:44:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1395670851, now seen corresponding path program 9 times [2018-11-18 11:44:02,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:44:02,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:44:02,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:02,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:44:02,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:44:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:02,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:44:02,216 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:44:02,224 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:44:04,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-18 11:44:04,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:44:04,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:44:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:44:04,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:44:04,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-18 11:44:04,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 11:44:04,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 11:44:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:44:04,420 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 13 states. [2018-11-18 11:44:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:44:04,453 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2018-11-18 11:44:04,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 11:44:04,456 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2018-11-18 11:44:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:44:04,456 INFO L225 Difference]: With dead ends: 64 [2018-11-18 11:44:04,456 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 11:44:04,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:44:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 11:44:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-18 11:44:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 11:44:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-11-18 11:44:04,459 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2018-11-18 11:44:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:44:04,459 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-11-18 11:44:04,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 11:44:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-11-18 11:44:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-18 11:44:04,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:44:04,460 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:44:04,460 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:44:04,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:44:04,460 INFO L82 PathProgramCache]: Analyzing trace with hash 732723291, now seen corresponding path program 10 times [2018-11-18 11:44:04,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:44:04,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:44:04,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:04,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:44:04,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:44:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:44:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:44:04,618 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:44:04,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:44:04 BoogieIcfgContainer [2018-11-18 11:44:04,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:44:04,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:44:04,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:44:04,651 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:44:04,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:59" (3/4) ... [2018-11-18 11:44:04,653 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 11:44:04,696 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4c44d6a2-c792-4015-a057-8e0c3a46102c/bin-2019/uautomizer/witness.graphml [2018-11-18 11:44:04,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:44:04,696 INFO L168 Benchmark]: Toolchain (without parser) took 6042.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 958.5 MB in the beginning and 1.0 GB in the end (delta: -49.1 MB). Peak memory consumption was 102.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:44:04,697 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:44:04,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.61 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 945.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:44:04,698 INFO L168 Benchmark]: Boogie Preprocessor took 64.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.0 MB in the beginning and 1.2 GB in the end (delta: -206.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:44:04,698 INFO L168 Benchmark]: RCFGBuilder took 247.90 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:44:04,698 INFO L168 Benchmark]: TraceAbstraction took 5507.25 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: 118.5 MB). Peak memory consumption was 118.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:44:04,699 INFO L168 Benchmark]: Witness Printer took 45.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:44:04,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.61 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 945.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.0 MB in the beginning and 1.2 GB in the end (delta: -206.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 247.90 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5507.25 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: 118.5 MB). Peak memory consumption was 118.5 MB. Max. memory is 11.5 GB. * Witness Printer took 45.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 51]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] FCALL struct cont cont; [L23] FCALL struct dummy dummy; [L24] FCALL struct dummy *dummies[10]; [L25] FCALL int a[10]; [L26] int i, *pa; [L27] i = __VERIFIER_nondet_int() [L28] int j = 0; VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=0] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=1] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=2] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=3] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=4] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=5] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=6] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=7] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=8] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=9] [L28] COND TRUE j < 10 [L29] FCALL a[j] = __VERIFIER_nondet_int() [L30] FCALL dummies[j] = __VERIFIER_nondet_pointer() [L28] j++ VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=10] [L28] COND FALSE !(j < 10) VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=10] [L32] COND TRUE i >= 0 && i < 9 [L33] FCALL a[i] = i [L34] FCALL dummy.array = &a[i] [L35] FCALL dummies[i + 1] = &dummy [L36] FCALL cont.array = &dummies[0] [L37] EXPR, FCALL cont.array [L37] EXPR, FCALL cont.array[i] [L37] EXPR, FCALL cont.array[i]->array [L37] pa = &cont.array[i]->array[i] [L38] EXPR, FCALL a[i] VAL [a={61:0}, a[i]=1, cont={56:0}, dummies={69:0}, dummy={44:0}, i=1, j=10, pa={64:0}] [L38] COND TRUE a[i] > 0 [L39] EXPR, FCALL dummies[i + 1] [L39] EXPR, FCALL dummies[i + 1]->array [L39] EXPR, FCALL dummies[i + 1]->array[i] [L39] i = dummies[i + 1]->array[i] - 10 [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=0, j=10, pa={64:0}] [L40] COND FALSE !(i < *pa) [L43] CALL, EXPR check(&cont, i) VAL [\old(i)=0, pc={56:0}] [L17] EXPR, FCALL pc->array [L17] EXPR, FCALL pc->array[i] [L17] EXPR, FCALL pc->array[i]->array [L17] EXPR, FCALL pc->array[i]->array[i] [L17] RET return pc->array[i]->array[i] == i; [L43] EXPR check(&cont, i) VAL [a={61:0}, check(&cont, i)=0, cont={56:0}, dummies={69:0}, dummy={44:0}, i=0, j=10, pa={64:0}] [L43] COND TRUE !check(&cont, i) [L51] __VERIFIER_error() VAL [a={61:0}, cont={56:0}, dummies={69:0}, dummy={44:0}, i=0, j=10, pa={64:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNSAFE Result, 5.4s OverallTime, 12 OverallIterations, 11 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 240 SDtfs, 55 SDslu, 1052 SDs, 0 SdLazy, 198 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=11, 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, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 717 NumberOfCodeBlocks, 717 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 45549 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1332 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 0/900 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...