./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 14:43:39,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:43:39,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:43:39,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:43:39,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:43:39,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:43:39,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:43:39,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:43:39,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:43:39,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:43:39,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:43:39,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:43:39,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:43:39,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:43:39,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:43:39,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:43:39,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:43:39,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:43:39,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:43:39,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:43:39,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:43:39,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:43:39,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:43:39,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:43:39,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:43:39,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:43:39,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:43:39,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:43:39,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:43:39,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:43:39,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:43:39,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:43:39,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:43:39,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:43:39,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:43:39,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:43:39,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:43:39,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:43:39,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:43:39,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:43:39,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:43:39,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:43:39,594 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:43:39,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:43:39,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:43:39,595 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:43:39,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:43:39,595 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:43:39,596 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:43:39,596 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:43:39,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:43:39,597 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:43:39,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:43:39,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:43:39,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:43:39,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:43:39,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:43:39,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:43:39,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:43:39,598 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:43:39,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:43:39,598 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:43:39,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:43:39,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:43:39,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:43:39,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:43:39,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:43:39,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:43:39,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:43:39,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:43:39,599 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:43:39,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:43:39,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:43:39,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:43:39,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:43:39,600 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan 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 -> Taipan 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 -> 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 [2019-12-07 14:43:39,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:43:39,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:43:39,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:43:39,710 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:43:39,711 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:43:39,711 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum05.i [2019-12-07 14:43:39,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/data/42e54b173/652671e5e5e741ed95ce87b394cdec17/FLAG92c0cd0ac [2019-12-07 14:43:40,213 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:43:40,213 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/sv-benchmarks/c/reducercommutativity/rangesum05.i [2019-12-07 14:43:40,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/data/42e54b173/652671e5e5e741ed95ce87b394cdec17/FLAG92c0cd0ac [2019-12-07 14:43:40,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/data/42e54b173/652671e5e5e741ed95ce87b394cdec17 [2019-12-07 14:43:40,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:43:40,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:43:40,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:43:40,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:43:40,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:43:40,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50530b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40, skipping insertion in model container [2019-12-07 14:43:40,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:43:40,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:43:40,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:43:40,413 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:43:40,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:43:40,438 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:43:40,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40 WrapperNode [2019-12-07 14:43:40,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:43:40,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:43:40,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:43:40,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:43:40,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:43:40,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:43:40,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:43:40,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:43:40,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... [2019-12-07 14:43:40,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:43:40,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:43:40,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:43:40,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:43:40,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/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 [2019-12-07 14:43:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:43:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:43:40,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:43:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:43:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:43:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:43:41,130 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:43:41,131 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-12-07 14:43:41,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:43:41 BoogieIcfgContainer [2019-12-07 14:43:41,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:43:41,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:43:41,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:43:41,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:43:41,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:43:40" (1/3) ... [2019-12-07 14:43:41,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253ef877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:43:41, skipping insertion in model container [2019-12-07 14:43:41,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:40" (2/3) ... [2019-12-07 14:43:41,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253ef877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:43:41, skipping insertion in model container [2019-12-07 14:43:41,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:43:41" (3/3) ... [2019-12-07 14:43:41,136 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2019-12-07 14:43:41,142 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:43:41,147 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:43:41,154 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:43:41,168 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:43:41,168 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:43:41,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:43:41,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:43:41,169 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:43:41,169 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:43:41,169 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:43:41,169 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:43:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 14:43:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 14:43:41,181 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:41,182 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:41,182 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:43:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:41,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2021687706, now seen corresponding path program 1 times [2019-12-07 14:43:41,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:41,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784699811] [2019-12-07 14:43:41,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:43:41,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784699811] [2019-12-07 14:43:41,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:41,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:43:41,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71590326] [2019-12-07 14:43:41,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:43:41,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:41,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:43:41,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:43:41,299 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-12-07 14:43:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:41,315 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-12-07 14:43:41,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:43:41,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 14:43:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:41,322 INFO L225 Difference]: With dead ends: 21 [2019-12-07 14:43:41,322 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 14:43:41,324 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:43:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 14:43:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 14:43:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 14:43:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-12-07 14:43:41,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-12-07 14:43:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:41,346 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 14:43:41,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:43:41,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-12-07 14:43:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 14:43:41,346 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:41,346 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:41,346 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:43:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash -560701834, now seen corresponding path program 1 times [2019-12-07 14:43:41,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:41,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319265429] [2019-12-07 14:43:41,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:41,357 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:43:41,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136010232] [2019-12-07 14:43:41,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:41,394 INFO L264 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:43:41,397 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:43:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:43:41,410 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:43:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:43:41,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319265429] [2019-12-07 14:43:41,416 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:43:41,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136010232] [2019-12-07 14:43:41,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:41,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:43:41,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914716510] [2019-12-07 14:43:41,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:43:41,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:41,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:43:41,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:43:41,418 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-12-07 14:43:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:41,451 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-12-07 14:43:41,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:43:41,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 14:43:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:41,452 INFO L225 Difference]: With dead ends: 22 [2019-12-07 14:43:41,452 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 14:43:41,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:43:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 14:43:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 14:43:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 14:43:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-12-07 14:43:41,455 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-12-07 14:43:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:41,456 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 14:43:41,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:43:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-12-07 14:43:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 14:43:41,456 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:41,456 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:41,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:41,657 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:43:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:41,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1964460554, now seen corresponding path program 1 times [2019-12-07 14:43:41,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:41,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307570439] [2019-12-07 14:43:41,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:41,672 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:43:41,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54571070] [2019-12-07 14:43:41,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:41,711 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:43:41,712 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:43:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 14:43:41,717 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:43:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 14:43:41,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307570439] [2019-12-07 14:43:41,722 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:43:41,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54571070] [2019-12-07 14:43:41,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:41,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:43:41,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914978621] [2019-12-07 14:43:41,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:43:41,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:41,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:43:41,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:43:41,724 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-12-07 14:43:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:41,734 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-12-07 14:43:41,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:43:41,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 14:43:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:41,735 INFO L225 Difference]: With dead ends: 24 [2019-12-07 14:43:41,735 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 14:43:41,735 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:43:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 14:43:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 14:43:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 14:43:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-12-07 14:43:41,738 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-12-07 14:43:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:41,738 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-12-07 14:43:41,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:43:41,738 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-12-07 14:43:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 14:43:41,739 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:41,739 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:41,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:41,940 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:43:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash -183512330, now seen corresponding path program 1 times [2019-12-07 14:43:41,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:41,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500902948] [2019-12-07 14:43:41,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:41,965 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:43:41,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64724237] [2019-12-07 14:43:41,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:42,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 14:43:42,013 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:43:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 14:43:42,021 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:43:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 14:43:42,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500902948] [2019-12-07 14:43:42,031 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:43:42,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64724237] [2019-12-07 14:43:42,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171410553] [2019-12-07 14:43:42,046 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:43:42,046 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:43:42,050 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:43:42,054 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:43:42,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:43:42,667 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#x~0.offset| 4) |ULTIMATE.start_rangesum_#in~x.offset|) [2019-12-07 14:43:42,730 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_61| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 14:43:42,793 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_61| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 14:43:42,856 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_61| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:42,918 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_61| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:43,017 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_61| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|)) [2019-12-07 14:43:43,082 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:43,145 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:43,208 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:43,271 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:43,287 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,328 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,369 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,382 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,394 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,432 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,474 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,575 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:43,833 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:44,053 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:44,273 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:44,959 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:47,027 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:49,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:49,835 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:51,894 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:52,328 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:52,499 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:52,534 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:52,823 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:53,299 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:43:55,173 WARN L192 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 14:43:58,422 WARN L192 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 14:43:58,422 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:43:58,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:43:58,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-07 14:43:58,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634548085] [2019-12-07 14:43:58,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:43:58,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:43:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:43:58,424 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2019-12-07 14:43:58,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:58,432 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-12-07 14:43:58,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:43:58,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-07 14:43:58,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:58,433 INFO L225 Difference]: With dead ends: 36 [2019-12-07 14:43:58,433 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 14:43:58,434 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:43:58,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 14:43:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 14:43:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 14:43:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-12-07 14:43:58,437 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2019-12-07 14:43:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:58,437 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-12-07 14:43:58,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:43:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-12-07 14:43:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 14:43:58,437 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:58,437 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:58,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:58,638 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:43:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:58,639 INFO L82 PathProgramCache]: Analyzing trace with hash -183531802, now seen corresponding path program 2 times [2019-12-07 14:43:58,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:58,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631680089] [2019-12-07 14:43:58,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:58,653 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:43:58,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083316442] [2019-12-07 14:43:58,654 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:58,689 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 14:43:58,689 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:43:58,690 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:43:58,691 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:43:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-12-07 14:43:58,700 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:43:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-12-07 14:43:58,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631680089] [2019-12-07 14:43:58,713 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:43:58,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083316442] [2019-12-07 14:43:58,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709327850] [2019-12-07 14:43:58,714 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:43:58,714 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:43:58,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:43:58,714 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:43:58,715 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:43:58,962 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:58,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:58,975 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:58,981 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:59,213 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#x~0.offset| 4) |ULTIMATE.start_rangesum_#in~x.offset|) [2019-12-07 14:43:59,277 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 14:43:59,340 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 14:43:59,404 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:59,467 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:59,567 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|)) [2019-12-07 14:43:59,632 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:59,696 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:59,760 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:59,824 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 14:43:59,832 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:59,901 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:59,925 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:43:59,931 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:00,510 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:00,609 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:00,723 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:03,475 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:03,561 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:03,651 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:06,626 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:06,865 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:07,341 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:08,235 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:08,417 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:08,472 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:11,160 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:44:13,289 WARN L192 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 14:44:17,289 WARN L192 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 14:44:17,290 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:44:17,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:44:17,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-12-07 14:44:17,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908641351] [2019-12-07 14:44:17,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 14:44:17,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:44:17,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 14:44:17,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:44:17,291 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2019-12-07 14:44:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:17,687 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2019-12-07 14:44:17,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:44:17,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-12-07 14:44:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:17,689 INFO L225 Difference]: With dead ends: 42 [2019-12-07 14:44:17,689 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 14:44:17,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:44:17,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 14:44:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 14:44:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 14:44:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-12-07 14:44:17,692 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2019-12-07 14:44:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:17,693 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-12-07 14:44:17,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 14:44:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-12-07 14:44:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-07 14:44:17,693 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:17,693 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:17,894 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:17,894 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:44:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:17,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1436453960, now seen corresponding path program 3 times [2019-12-07 14:44:17,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:44:17,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261234177] [2019-12-07 14:44:17,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:17,911 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:44:17,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038968725] [2019-12-07 14:44:17,912 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:17,955 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 14:44:17,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:44:17,957 INFO L264 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:44:17,958 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:44:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-12-07 14:44:17,968 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:44:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-12-07 14:44:17,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261234177] [2019-12-07 14:44:17,978 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:44:17,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038968725] [2019-12-07 14:44:17,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798776119] [2019-12-07 14:44:17,979 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:44:17,979 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:44:17,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:44:17,980 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:44:17,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:44:18,125 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,215 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,312 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,320 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,348 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,356 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,363 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,378 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,384 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,438 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,493 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,499 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,783 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,941 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:18,983 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:20,629 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:20,886 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:23,086 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:23,495 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:23,524 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:23,853 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:27,435 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:27,574 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:27,682 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:44:27,985 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 14:44:35,402 WARN L192 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 14:44:35,403 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:44:35,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:44:35,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-12-07 14:44:35,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491585712] [2019-12-07 14:44:35,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:44:35,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:44:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:44:35,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2019-12-07 14:44:35,404 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2019-12-07 14:44:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:35,413 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-12-07 14:44:35,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:44:35,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-12-07 14:44:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:35,414 INFO L225 Difference]: With dead ends: 41 [2019-12-07 14:44:35,414 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 14:44:35,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2019-12-07 14:44:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 14:44:35,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 14:44:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 14:44:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-12-07 14:44:35,417 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 29 [2019-12-07 14:44:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:35,417 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-12-07 14:44:35,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:44:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-12-07 14:44:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 14:44:35,418 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:35,418 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:35,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:35,619 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:44:35,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:35,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1244181880, now seen corresponding path program 4 times [2019-12-07 14:44:35,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:44:35,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907902631] [2019-12-07 14:44:35,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:35,633 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:44:35,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064406606] [2019-12-07 14:44:35,634 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:35,673 INFO L264 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:44:35,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:44:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-12-07 14:44:35,693 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:44:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-12-07 14:44:35,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907902631] [2019-12-07 14:44:35,709 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:44:35,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064406606] [2019-12-07 14:44:35,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1713437354] [2019-12-07 14:44:35,711 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:44:35,711 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:44:35,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:44:35,711 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:44:35,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:44:35,849 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:35,856 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:35,909 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:35,931 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:35,954 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:35,982 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:36,115 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 14:44:36,178 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 14:44:36,219 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:36,224 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:36,325 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:36,573 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:36,611 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:38,146 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:43,503 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:43,524 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:43,762 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:43,812 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:47,517 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:47,845 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:49,050 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:44:49,121 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:44:50,676 WARN L192 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 14:44:52,863 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 14:44:52,864 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:44:52,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:44:52,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 14:44:52,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027473929] [2019-12-07 14:44:52,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 14:44:52,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:44:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 14:44:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:44:52,865 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2019-12-07 14:44:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:52,874 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2019-12-07 14:44:52,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:44:52,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-12-07 14:44:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:52,875 INFO L225 Difference]: With dead ends: 59 [2019-12-07 14:44:52,875 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 14:44:52,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:44:52,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 14:44:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-07 14:44:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 14:44:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-12-07 14:44:52,878 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 31 [2019-12-07 14:44:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:52,878 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-12-07 14:44:52,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 14:44:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-12-07 14:44:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 14:44:52,879 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:52,879 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:53,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:53,080 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:44:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:53,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1504756584, now seen corresponding path program 5 times [2019-12-07 14:44:53,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:44:53,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768558136] [2019-12-07 14:44:53,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:53,099 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:44:53,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477141646] [2019-12-07 14:44:53,099 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:54,097 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 14:44:54,098 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-12-07 14:44:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:44:54,204 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 14:44:54,204 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:44:54,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:54,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:44:54 BoogieIcfgContainer [2019-12-07 14:44:54,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:44:54,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:44:54,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:44:54,460 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:44:54,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:43:41" (3/4) ... [2019-12-07 14:44:54,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:44:54,508 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3eee970f-c278-4096-b4d2-2baefd2a1169/bin/utaipan/witness.graphml [2019-12-07 14:44:54,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:44:54,509 INFO L168 Benchmark]: Toolchain (without parser) took 74276.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:54,509 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:44:54,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:54,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:44:54,510 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:54,510 INFO L168 Benchmark]: RCFGBuilder took 644.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:54,510 INFO L168 Benchmark]: TraceAbstraction took 73327.85 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 43.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -42.5 MB). Peak memory consumption was 486.9 kB. Max. memory is 11.5 GB. [2019-12-07 14:44:54,511 INFO L168 Benchmark]: Witness Printer took 48.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:54,512 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 204.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 644.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 73327.85 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 43.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -42.5 MB). Peak memory consumption was 486.9 kB. Max. memory is 11.5 GB. * Witness Printer took 48.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; [L5] int i; [L6] i = 0 [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND FALSE !(i < 5) [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND FALSE !(i<5 -1) [L46] x[5 -1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 73.2s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 0 SDslu, 119 SDs, 0 SdLazy, 69 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 274 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 22.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 161 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 6565 SizeOfPredicates, 4 NumberOfNonLiveVariables, 880 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 304/338 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...