./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum01_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 5cba8acfa381c990ec40e4bf9e5d202ee845a576 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-09 01:21:43,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:21:43,895 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:21:43,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:21:43,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:21:43,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:21:43,905 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:21:43,906 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:21:43,907 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:21:43,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:21:43,908 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:21:43,908 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:21:43,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:21:43,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:21:43,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:21:43,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:21:43,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:21:43,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:21:43,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:21:43,916 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:21:43,916 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:21:43,917 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:21:43,919 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:21:43,919 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:21:43,919 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:21:43,920 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:21:43,920 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:21:43,921 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:21:43,922 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:21:43,922 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:21:43,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:21:43,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:21:43,923 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:21:43,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:21:43,924 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:21:43,924 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:21:43,925 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 01:21:43,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:21:43,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:21:43,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:21:43,935 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:21:43,936 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:21:43,936 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:21:43,936 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 01:21:43,936 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:21:43,936 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:21:43,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:21:43,936 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:21:43,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:21:43,937 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:21:43,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:21:43,938 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:21:43,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:21:43,938 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_428be73a-9c9b-4d3f-9b81-725245343e0a/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 -> 5cba8acfa381c990ec40e4bf9e5d202ee845a576 [2018-12-09 01:21:43,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:21:43,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:21:43,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:21:43,972 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:21:43,973 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:21:43,973 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/../../sv-benchmarks/c/loops/sum01_false-unreach-call_true-termination.i [2018-12-09 01:21:44,012 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/data/8e746296e/09da7f097a8e409e98f89cf165ee7a1f/FLAG6ea1e21d2 [2018-12-09 01:21:44,424 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:21:44,424 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/sv-benchmarks/c/loops/sum01_false-unreach-call_true-termination.i [2018-12-09 01:21:44,428 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/data/8e746296e/09da7f097a8e409e98f89cf165ee7a1f/FLAG6ea1e21d2 [2018-12-09 01:21:44,436 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/data/8e746296e/09da7f097a8e409e98f89cf165ee7a1f [2018-12-09 01:21:44,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:21:44,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:21:44,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:21:44,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:21:44,441 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:21:44,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd2551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44, skipping insertion in model container [2018-12-09 01:21:44,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:21:44,455 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:21:44,536 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:21:44,538 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:21:44,546 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:21:44,554 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:21:44,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44 WrapperNode [2018-12-09 01:21:44,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:21:44,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:21:44,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:21:44,555 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:21:44,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:21:44,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:21:44,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:21:44,566 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:21:44,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... [2018-12-09 01:21:44,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:21:44,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:21:44,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:21:44,578 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:21:44,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:21:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:21:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:21:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:21:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:21:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:21:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 01:21:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 01:21:44,720 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:21:44,720 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 01:21:44,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:21:44 BoogieIcfgContainer [2018-12-09 01:21:44,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:21:44,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:21:44,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:21:44,723 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:21:44,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:21:44" (1/3) ... [2018-12-09 01:21:44,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@995f985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:21:44, skipping insertion in model container [2018-12-09 01:21:44,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:21:44" (2/3) ... [2018-12-09 01:21:44,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@995f985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:21:44, skipping insertion in model container [2018-12-09 01:21:44,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:21:44" (3/3) ... [2018-12-09 01:21:44,725 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_false-unreach-call_true-termination.i [2018-12-09 01:21:44,730 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:21:44,734 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:21:44,744 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:21:44,762 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:21:44,762 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:21:44,762 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:21:44,762 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:21:44,762 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:21:44,762 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:21:44,762 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:21:44,762 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:21:44,763 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:21:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-09 01:21:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:21:44,776 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:44,777 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:44,778 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:44,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:44,781 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2018-12-09 01:21:44,783 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:44,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:44,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:44,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:21:44,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:44,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:21:44,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:21:44,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 01:21:44,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 01:21:44,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:21:44,861 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-09 01:21:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:44,873 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-12-09 01:21:44,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 01:21:44,873 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-09 01:21:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:44,878 INFO L225 Difference]: With dead ends: 30 [2018-12-09 01:21:44,878 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 01:21:44,880 INFO L631 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 [2018-12-09 01:21:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 01:21:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 01:21:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 01:21:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-12-09 01:21:44,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-12-09 01:21:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:44,899 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-12-09 01:21:44,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 01:21:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-12-09 01:21:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:21:44,900 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:44,900 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:44,900 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:44,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2018-12-09 01:21:44,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:44,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:44,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:21:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:44,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:21:44,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:21:44,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:21:44,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:21:44,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:21:44,944 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2018-12-09 01:21:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:44,974 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-12-09 01:21:44,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:21:44,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-09 01:21:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:44,975 INFO L225 Difference]: With dead ends: 21 [2018-12-09 01:21:44,975 INFO L226 Difference]: Without dead ends: 16 [2018-12-09 01:21:44,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:21:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-09 01:21:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-09 01:21:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-09 01:21:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-12-09 01:21:44,978 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2018-12-09 01:21:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:44,978 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-12-09 01:21:44,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:21:44,978 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-12-09 01:21:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 01:21:44,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:44,979 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:44,979 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:44,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:44,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2018-12-09 01:21:44,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:44,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:44,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:44,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:21:44,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:45,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:45,095 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:45,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:21:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:45,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:45,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:45,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-12-09 01:21:45,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 01:21:45,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 01:21:45,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-12-09 01:21:45,215 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 14 states. [2018-12-09 01:21:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:45,323 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2018-12-09 01:21:45,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 01:21:45,323 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-12-09 01:21:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:45,323 INFO L225 Difference]: With dead ends: 37 [2018-12-09 01:21:45,324 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 01:21:45,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-12-09 01:21:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 01:21:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-12-09 01:21:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 01:21:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-09 01:21:45,327 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-12-09 01:21:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:45,327 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-09 01:21:45,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 01:21:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-09 01:21:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 01:21:45,327 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:45,327 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:45,328 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:45,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 1 times [2018-12-09 01:21:45,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:45,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:45,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:21:45,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:45,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:45,348 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:45,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:21:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:45,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:45,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:45,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-09 01:21:45,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:21:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:21:45,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:21:45,378 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2018-12-09 01:21:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:45,390 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-12-09 01:21:45,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:21:45,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 01:21:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:45,391 INFO L225 Difference]: With dead ends: 30 [2018-12-09 01:21:45,391 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 01:21:45,391 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:21:45,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 01:21:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-12-09 01:21:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 01:21:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 01:21:45,394 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-12-09 01:21:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:45,394 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 01:21:45,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:21:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 01:21:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 01:21:45,394 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:45,395 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:45,395 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:45,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:45,395 INFO L82 PathProgramCache]: Analyzing trace with hash -424886253, now seen corresponding path program 2 times [2018-12-09 01:21:45,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:45,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:45,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:21:45,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-09 01:21:45,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:45,496 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:45,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:21:45,511 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:21:45,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:21:45,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:45,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:45,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 19 [2018-12-09 01:21:45,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-09 01:21:45,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-09 01:21:45,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2018-12-09 01:21:45,635 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 19 states. [2018-12-09 01:21:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:45,883 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-12-09 01:21:45,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 01:21:45,883 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-12-09 01:21:45,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:45,884 INFO L225 Difference]: With dead ends: 40 [2018-12-09 01:21:45,884 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 01:21:45,884 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2018-12-09 01:21:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 01:21:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-12-09 01:21:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 01:21:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-09 01:21:45,887 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2018-12-09 01:21:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:45,887 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-09 01:21:45,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-09 01:21:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-09 01:21:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 01:21:45,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:45,888 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:45,888 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:45,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1753373675, now seen corresponding path program 2 times [2018-12-09 01:21:45,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:45,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:45,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:21:45,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:45,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:45,925 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:45,932 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:21:45,940 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:21:45,940 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:21:45,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:45,961 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:45,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-09 01:21:45,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 01:21:45,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 01:21:45,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:21:45,962 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2018-12-09 01:21:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:45,979 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-12-09 01:21:45,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:21:45,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-12-09 01:21:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:45,980 INFO L225 Difference]: With dead ends: 39 [2018-12-09 01:21:45,980 INFO L226 Difference]: Without dead ends: 31 [2018-12-09 01:21:45,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:21:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-09 01:21:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-12-09 01:21:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 01:21:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-12-09 01:21:45,984 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2018-12-09 01:21:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:45,985 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-12-09 01:21:45,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 01:21:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-12-09 01:21:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 01:21:45,985 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:45,985 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:45,986 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:45,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1094958777, now seen corresponding path program 3 times [2018-12-09 01:21:45,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:45,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:45,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:21:45,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:46,029 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:46,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:21:46,042 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-12-09 01:21:46,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:21:46,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:46,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-09 01:21:46,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:21:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:21:46,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:21:46,062 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2018-12-09 01:21:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:46,086 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2018-12-09 01:21:46,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:21:46,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-12-09 01:21:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:46,087 INFO L225 Difference]: With dead ends: 42 [2018-12-09 01:21:46,087 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 01:21:46,087 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:21:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 01:21:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-12-09 01:21:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 01:21:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-12-09 01:21:46,091 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2018-12-09 01:21:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:46,092 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-12-09 01:21:46,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:21:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-12-09 01:21:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 01:21:46,093 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:46,093 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:46,093 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:46,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:46,093 INFO L82 PathProgramCache]: Analyzing trace with hash 98169237, now seen corresponding path program 4 times [2018-12-09 01:21:46,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:46,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:46,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:21:46,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:46,138 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:46,144 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:21:46,151 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:21:46,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:21:46,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:46,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-09 01:21:46,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 01:21:46,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 01:21:46,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-09 01:21:46,172 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 9 states. [2018-12-09 01:21:46,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:46,197 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-12-09 01:21:46,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 01:21:46,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-12-09 01:21:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:46,198 INFO L225 Difference]: With dead ends: 45 [2018-12-09 01:21:46,198 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 01:21:46,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-09 01:21:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 01:21:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2018-12-09 01:21:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 01:21:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-12-09 01:21:46,201 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2018-12-09 01:21:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:46,201 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-12-09 01:21:46,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 01:21:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-12-09 01:21:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 01:21:46,202 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:46,202 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:46,202 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:46,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:46,202 INFO L82 PathProgramCache]: Analyzing trace with hash 144867641, now seen corresponding path program 5 times [2018-12-09 01:21:46,203 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:46,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:46,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:21:46,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:46,265 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:46,270 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:21:46,279 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-12-09 01:21:46,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:21:46,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:46,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-09 01:21:46,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 01:21:46,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 01:21:46,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 01:21:46,298 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 10 states. [2018-12-09 01:21:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:46,321 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-12-09 01:21:46,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 01:21:46,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-12-09 01:21:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:46,322 INFO L225 Difference]: With dead ends: 48 [2018-12-09 01:21:46,322 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 01:21:46,322 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 01:21:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 01:21:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-12-09 01:21:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 01:21:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-12-09 01:21:46,325 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2018-12-09 01:21:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:46,325 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-12-09 01:21:46,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 01:21:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-12-09 01:21:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 01:21:46,326 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:46,326 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:46,326 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:46,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash -232382699, now seen corresponding path program 6 times [2018-12-09 01:21:46,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:46,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:46,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:21:46,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:21:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:21:46,400 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/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 [2018-12-09 01:21:46,406 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:21:46,418 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-12-09 01:21:46,418 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:21:46,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:21:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:21:46,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:21:46,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-09 01:21:46,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 01:21:46,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 01:21:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:21:46,438 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2018-12-09 01:21:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:21:46,463 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-12-09 01:21:46,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 01:21:46,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2018-12-09 01:21:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:21:46,464 INFO L225 Difference]: With dead ends: 51 [2018-12-09 01:21:46,464 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 01:21:46,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:21:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 01:21:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-12-09 01:21:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-09 01:21:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-12-09 01:21:46,467 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2018-12-09 01:21:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:21:46,467 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-12-09 01:21:46,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 01:21:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-12-09 01:21:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 01:21:46,468 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:21:46,468 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:21:46,468 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:21:46,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:21:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1032151993, now seen corresponding path program 7 times [2018-12-09 01:21:46,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:21:46,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:21:46,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:21:46,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:21:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:21:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:21:46,499 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 01:21:46,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:21:46 BoogieIcfgContainer [2018-12-09 01:21:46,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:21:46,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:21:46,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:21:46,520 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:21:46,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:21:44" (3/4) ... [2018-12-09 01:21:46,522 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 01:21:46,553 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_428be73a-9c9b-4d3f-9b81-725245343e0a/bin-2019/uautomizer/witness.graphml [2018-12-09 01:21:46,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:21:46,554 INFO L168 Benchmark]: Toolchain (without parser) took 2116.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.3 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-09 01:21:46,555 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:21:46,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.86 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:21:46,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.29 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:21:46,555 INFO L168 Benchmark]: Boogie Preprocessor took 11.52 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:21:46,555 INFO L168 Benchmark]: RCFGBuilder took 142.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:21:46,556 INFO L168 Benchmark]: TraceAbstraction took 1798.67 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:21:46,556 INFO L168 Benchmark]: Witness Printer took 33.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:21:46,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.86 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.29 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.52 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 142.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1798.67 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. * Witness Printer took 33.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=10, n=0] [L13] COND TRUE i<=n VAL [i=1, n=0, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=1, n=10, n=2] [L13] i++ VAL [i=2, n=10, n=2] [L13] COND TRUE i<=n VAL [i=2, n=10, n=2] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=2, n=10, n=4] [L13] i++ VAL [i=3, n=4, n=10] [L13] COND TRUE i<=n VAL [i=3, n=10, n=4] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=3, n=10, n=6] [L13] i++ VAL [i=4, n=10, n=6] [L13] COND TRUE i<=n VAL [i=4, n=6, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=4, n=10, n=8] [L13] i++ VAL [i=5, n=10, n=8] [L13] COND TRUE i<=n VAL [i=5, n=8, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=5, n=10, n=10] [L13] i++ VAL [i=6, n=10, n=10] [L13] COND TRUE i<=n VAL [i=6, n=10, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=6, n=10, n=12] [L13] i++ VAL [i=7, n=12, n=10] [L13] COND TRUE i<=n VAL [i=7, n=10, n=12] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=7, n=10, n=14] [L13] i++ VAL [i=8, n=10, n=14] [L13] COND TRUE i<=n VAL [i=8, n=10, n=14] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=8, n=16, n=10] [L13] i++ VAL [i=9, n=16, n=10] [L13] COND TRUE i<=n VAL [i=9, n=10, n=16] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=9, n=10, n=18] [L13] i++ VAL [i=10, n=18, n=10] [L13] COND TRUE i<=n VAL [i=10, n=18, n=10] [L14] COND FALSE !(i<10) VAL [i=10, n=18, n=10] [L13] i++ VAL [i=11, n=10, n=18] [L13] COND FALSE !(i<=n) VAL [i=11, n=18, n=10] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 1.7s OverallTime, 11 OverallIterations, 10 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 114 SDtfs, 63 SDslu, 368 SDs, 0 SdLazy, 450 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 205 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=10, 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, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 414 ConstructedInterpolants, 0 QuantifiedInterpolants, 29790 SizeOfPredicates, 12 NumberOfNonLiveVariables, 448 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 145/780 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...