./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum10.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_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum10.i -s /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 af68da58954d6230e3860792840330ae6de845ab ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:07:52,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:07:52,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:07:52,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:07:52,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:07:52,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:07:52,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:07:52,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:07:52,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:07:52,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:07:52,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:07:52,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:07:52,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:07:52,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:07:52,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:07:52,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:07:52,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:07:52,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:07:52,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:07:52,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:07:52,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:07:52,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:07:52,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:07:52,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:07:52,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:07:52,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:07:52,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:07:52,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:07:52,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:07:52,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:07:52,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:07:52,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:07:52,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:07:52,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:07:52,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:07:52,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:07:52,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:07:52,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:07:52,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:07:52,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:07:52,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:07:52,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:07:52,557 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:07:52,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:07:52,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:07:52,558 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:07:52,558 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:07:52,559 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:07:52,559 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:07:52,559 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:07:52,559 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:07:52,559 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:07:52,559 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:07:52,559 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:07:52,559 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:07:52,560 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:07:52,560 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:07:52,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:07:52,560 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:07:52,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:07:52,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:07:52,561 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:07:52,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:07:52,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:07:52,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:07:52,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:07:52,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:07:52,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:07:52,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:07:52,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:07:52,563 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:07:52,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:07:52,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:07:52,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:07:52,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:07:52,563 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_265dda23-84c5-442d-a0a7-99189fa040ae/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 -> af68da58954d6230e3860792840330ae6de845ab [2019-12-07 15:07:52,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:07:52,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:07:52,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:07:52,678 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:07:52,678 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:07:52,679 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum10.i [2019-12-07 15:07:52,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/data/d609c57f5/c47e765536db4e3c9659b195a4f28eeb/FLAG57e1023e9 [2019-12-07 15:07:53,165 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:07:53,165 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/sv-benchmarks/c/reducercommutativity/rangesum10.i [2019-12-07 15:07:53,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/data/d609c57f5/c47e765536db4e3c9659b195a4f28eeb/FLAG57e1023e9 [2019-12-07 15:07:53,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/data/d609c57f5/c47e765536db4e3c9659b195a4f28eeb [2019-12-07 15:07:53,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:07:53,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:07:53,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:07:53,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:07:53,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:07:53,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505a923d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53, skipping insertion in model container [2019-12-07 15:07:53,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:07:53,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:07:53,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:07:53,348 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:07:53,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:07:53,379 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:07:53,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53 WrapperNode [2019-12-07 15:07:53,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:07:53,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:07:53,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:07:53,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:07:53,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:07:53,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:07:53,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:07:53,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:07:53,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... [2019-12-07 15:07:53,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:07:53,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:07:53,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:07:53,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:07:53,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:07:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:07:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:07:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:07:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:07:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:07:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:07:54,583 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:07:54,583 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-12-07 15:07:54,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:07:54 BoogieIcfgContainer [2019-12-07 15:07:54,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:07:54,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:07:54,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:07:54,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:07:54,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:07:53" (1/3) ... [2019-12-07 15:07:54,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eda1654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:07:54, skipping insertion in model container [2019-12-07 15:07:54,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:07:53" (2/3) ... [2019-12-07 15:07:54,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eda1654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:07:54, skipping insertion in model container [2019-12-07 15:07:54,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:07:54" (3/3) ... [2019-12-07 15:07:54,589 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum10.i [2019-12-07 15:07:54,595 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:07:54,600 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:07:54,607 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:07:54,621 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:07:54,621 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:07:54,621 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:07:54,621 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:07:54,621 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:07:54,622 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:07:54,622 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:07:54,622 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:07:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 15:07:54,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:07:54,634 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:07:54,634 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:07:54,635 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:07:54,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:07:54,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2021687706, now seen corresponding path program 1 times [2019-12-07 15:07:54,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:07:54,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033084722] [2019-12-07 15:07:54,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:07:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:07:54,742 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 15:07:54,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033084722] [2019-12-07 15:07:54,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:07:54,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:07:54,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137418979] [2019-12-07 15:07:54,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:07:54,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:07:54,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:07:54,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:07:54,757 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-12-07 15:07:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:07:54,774 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-12-07 15:07:54,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:07:54,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 15:07:54,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:07:54,781 INFO L225 Difference]: With dead ends: 21 [2019-12-07 15:07:54,781 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 15:07:54,783 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 15:07:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 15:07:54,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 15:07:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 15:07:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-12-07 15:07:54,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-12-07 15:07:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:07:54,805 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 15:07:54,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:07:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-12-07 15:07:54,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:07:54,806 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:07:54,806 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:07:54,806 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:07:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:07:54,806 INFO L82 PathProgramCache]: Analyzing trace with hash -560701834, now seen corresponding path program 1 times [2019-12-07 15:07:54,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:07:54,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465715540] [2019-12-07 15:07:54,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:07:54,817 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:07:54,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393670359] [2019-12-07 15:07:54,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:07:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:07:54,857 INFO L264 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:07:54,860 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:07:54,872 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 15:07:54,872 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:07:54,878 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 15:07:54,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465715540] [2019-12-07 15:07:54,879 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:07:54,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393670359] [2019-12-07 15:07:54,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:07:54,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 15:07:54,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429986329] [2019-12-07 15:07:54,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:07:54,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:07:54,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:07:54,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:07:54,881 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-12-07 15:07:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:07:55,262 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-12-07 15:07:55,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:07:55,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 15:07:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:07:55,263 INFO L225 Difference]: With dead ends: 22 [2019-12-07 15:07:55,263 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 15:07:55,264 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 15:07:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 15:07:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 15:07:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:07:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-12-07 15:07:55,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-12-07 15:07:55,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:07:55,267 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 15:07:55,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:07:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-12-07 15:07:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 15:07:55,267 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:07:55,267 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:07:55,468 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:07:55,469 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:07:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:07:55,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1964460554, now seen corresponding path program 1 times [2019-12-07 15:07:55,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:07:55,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584794678] [2019-12-07 15:07:55,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:07:55,483 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:07:55,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525882095] [2019-12-07 15:07:55,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:07:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:07:55,520 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:07:55,522 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:07:55,526 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 15:07:55,527 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:07:55,532 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 15:07:55,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584794678] [2019-12-07 15:07:55,533 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:07:55,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525882095] [2019-12-07 15:07:55,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:07:55,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 15:07:55,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922170336] [2019-12-07 15:07:55,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:07:55,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:07:55,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:07:55,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:07:55,535 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-12-07 15:07:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:07:55,558 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-12-07 15:07:55,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:07:55,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 15:07:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:07:55,559 INFO L225 Difference]: With dead ends: 24 [2019-12-07 15:07:55,559 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:07:55,559 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 15:07:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:07:55,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 15:07:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 15:07:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-12-07 15:07:55,562 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-12-07 15:07:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:07:55,562 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-12-07 15:07:55,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:07:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-12-07 15:07:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 15:07:55,563 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:07:55,563 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:07:55,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:07:55,764 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:07:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:07:55,765 INFO L82 PathProgramCache]: Analyzing trace with hash -183512330, now seen corresponding path program 1 times [2019-12-07 15:07:55,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:07:55,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555842860] [2019-12-07 15:07:55,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:07:55,790 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:07:55,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292733439] [2019-12-07 15:07:55,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:07:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:07:55,840 INFO L264 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:07:55,841 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:07:55,850 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 15:07:55,850 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:07:55,862 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 15:07:55,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555842860] [2019-12-07 15:07:55,862 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:07:55,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292733439] [2019-12-07 15:07:55,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959233845] [2019-12-07 15:07:55,883 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 15:07:55,883 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:07:55,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:07:55,892 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:07:55,892 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:07:56,271 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,465 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,477 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,510 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,534 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,580 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,588 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,596 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:56,800 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 15:07:56,893 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 15:07:56,953 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 15:07:57,013 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 15:07:57,799 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:57,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:58,200 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:07:59,984 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:01,144 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:03,950 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:04,030 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:04,066 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:04,129 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:04,166 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:05,705 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:05,804 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:08:08,901 WARN L192 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 15:08:10,725 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 15:08:10,726 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:08:10,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:08:10,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-07 15:08:10,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457025608] [2019-12-07 15:08:10,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:08:10,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:08:10,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:08:10,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:08:10,727 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2019-12-07 15:08:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:08:10,737 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-12-07 15:08:10,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:08:10,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-07 15:08:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:08:10,738 INFO L225 Difference]: With dead ends: 36 [2019-12-07 15:08:10,738 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 15:08:10,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:08:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 15:08:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 15:08:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 15:08:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-12-07 15:08:10,741 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2019-12-07 15:08:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:08:10,741 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-12-07 15:08:10,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:08:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-12-07 15:08:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 15:08:10,742 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:08:10,742 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:08:10,943 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:08:10,943 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:08:10,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:08:10,944 INFO L82 PathProgramCache]: Analyzing trace with hash -183531802, now seen corresponding path program 2 times [2019-12-07 15:08:10,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:08:10,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954619933] [2019-12-07 15:08:10,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:08:10,959 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:08:10,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147875088] [2019-12-07 15:08:10,959 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:08:10,996 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 15:08:10,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:08:10,996 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:08:10,998 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:08:11,007 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 15:08:11,007 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:08:11,023 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 15:08:11,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954619933] [2019-12-07 15:08:11,023 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:08:11,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147875088] [2019-12-07 15:08:11,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170632588] [2019-12-07 15:08:11,024 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 15:08:11,024 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:08:11,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:08:11,025 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:08:11,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:08:11,205 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:11,213 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:11,242 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:11,475 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 15:08:11,538 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 15:08:11,601 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 15:08:11,664 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 15:08:11,725 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 15:08:11,820 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 15:08:11,883 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 15:08:11,944 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 15:08:12,007 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 15:08:12,069 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 15:08:12,098 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:12,104 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:12,141 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:12,148 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:12,252 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:14,591 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:14,653 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:15,196 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:18,810 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:22,095 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:22,124 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:23,887 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:23,963 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:24,072 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:25,619 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:25,659 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:28,203 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:08:28,403 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 15:08:30,201 WARN L192 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 15:08:30,201 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:08:30,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:08:30,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-07 15:08:30,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877103827] [2019-12-07 15:08:30,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:08:30,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:08:30,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:08:30,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:08:30,202 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2019-12-07 15:08:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:08:30,606 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-12-07 15:08:30,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:08:30,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-07 15:08:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:08:30,607 INFO L225 Difference]: With dead ends: 45 [2019-12-07 15:08:30,607 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 15:08:30,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:08:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 15:08:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-07 15:08:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 15:08:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-12-07 15:08:30,611 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2019-12-07 15:08:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:08:30,611 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-12-07 15:08:30,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:08:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-12-07 15:08:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 15:08:30,612 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:08:30,612 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:08:30,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:08:30,813 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:08:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:08:30,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1522987546, now seen corresponding path program 3 times [2019-12-07 15:08:30,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:08:30,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125422622] [2019-12-07 15:08:30,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:08:30,828 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:08:30,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398261104] [2019-12-07 15:08:30,828 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:08:30,872 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:08:30,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:08:30,873 INFO L264 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:08:30,874 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:08:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-12-07 15:08:30,899 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:08:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-12-07 15:08:30,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125422622] [2019-12-07 15:08:30,936 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:08:30,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398261104] [2019-12-07 15:08:30,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1167797181] [2019-12-07 15:08:30,937 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 15:08:30,938 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:08:30,938 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:08:30,938 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:08:30,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:08:31,127 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:31,169 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:31,178 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:31,435 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 15:08:31,517 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 15:08:31,598 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 15:08:31,679 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4))) [2019-12-07 15:08:31,760 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4))) [2019-12-07 15:08:31,859 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 15:08:31,938 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 15:08:32,022 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 15:08:32,104 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 15:08:32,187 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 15:08:32,269 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 15:08:32,300 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:32,308 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:32,399 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:32,437 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:32,994 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:33,000 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:35,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:35,114 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:35,120 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:35,698 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:42,494 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:44,177 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:44,193 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:44,326 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:44,468 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:44,602 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:44,694 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:45,009 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:45,128 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:48,103 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:49,241 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:08:53,095 WARN L192 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 15:08:55,122 WARN L192 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 15:08:55,123 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:08:55,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:08:55,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2019-12-07 15:08:55,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974798036] [2019-12-07 15:08:55,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 15:08:55,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:08:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 15:08:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-12-07 15:08:55,124 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2019-12-07 15:08:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:08:55,181 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2019-12-07 15:08:55,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 15:08:55,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-12-07 15:08:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:08:55,182 INFO L225 Difference]: With dead ends: 65 [2019-12-07 15:08:55,182 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 15:08:55,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-12-07 15:08:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 15:08:55,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-12-07 15:08:55,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 15:08:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-12-07 15:08:55,186 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 32 [2019-12-07 15:08:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:08:55,186 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-12-07 15:08:55,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 15:08:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-12-07 15:08:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-12-07 15:08:55,187 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:08:55,187 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:08:55,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:08:55,388 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:08:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:08:55,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1419717402, now seen corresponding path program 4 times [2019-12-07 15:08:55,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:08:55,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961820450] [2019-12-07 15:08:55,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:08:55,405 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:08:55,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917804322] [2019-12-07 15:08:55,406 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:08:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:08:55,454 INFO L264 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:08:55,456 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:08:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-12-07 15:08:55,475 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:08:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-12-07 15:08:55,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961820450] [2019-12-07 15:08:55,510 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:08:55,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917804322] [2019-12-07 15:08:55,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474832772] [2019-12-07 15:08:55,511 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 15:08:55,511 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:08:55,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:08:55,512 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:08:55,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:08:55,702 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:55,728 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:55,827 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:55,833 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:55,854 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:55,860 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:55,866 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:55,871 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:56,152 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:08:56,248 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:01,601 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:03,640 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:03,980 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:08,938 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:09,093 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:09,497 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:10,363 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:10,473 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:10,823 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:12,878 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:15,348 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:09:18,032 WARN L192 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 15:09:20,421 WARN L192 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 15:09:20,422 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:09:20,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:09:20,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-12-07 15:09:20,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553843190] [2019-12-07 15:09:20,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 15:09:20,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:09:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 15:09:20,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-12-07 15:09:20,423 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 12 states. [2019-12-07 15:09:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:09:20,443 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2019-12-07 15:09:20,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 15:09:20,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2019-12-07 15:09:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:09:20,444 INFO L225 Difference]: With dead ends: 90 [2019-12-07 15:09:20,445 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 15:09:20,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-12-07 15:09:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 15:09:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-12-07 15:09:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-12-07 15:09:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-12-07 15:09:20,449 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 44 [2019-12-07 15:09:20,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:09:20,449 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2019-12-07 15:09:20,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 15:09:20,449 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2019-12-07 15:09:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 15:09:20,450 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:09:20,450 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:09:20,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:09:20,651 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:09:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:09:20,652 INFO L82 PathProgramCache]: Analyzing trace with hash 639654630, now seen corresponding path program 5 times [2019-12-07 15:09:20,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:09:20,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765744792] [2019-12-07 15:09:20,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:09:20,674 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:09:20,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874392117] [2019-12-07 15:09:20,674 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/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 15:09:20,718 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 15:09:20,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:09:20,719 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:09:20,721 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:09:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-12-07 15:09:20,731 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:09:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-12-07 15:09:20,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765744792] [2019-12-07 15:09:20,744 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:09:20,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874392117] [2019-12-07 15:09:20,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1637860090] [2019-12-07 15:09:20,745 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 15:09:20,746 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:09:20,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:09:20,746 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:09:20,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:09:20,860 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:20,902 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:20,909 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:20,916 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:20,923 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:20,930 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:20,972 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:21,015 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:21,288 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:21,295 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:23,323 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:23,346 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:23,590 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 15:09:23,671 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_108| |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 15:09:23,752 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_108| |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 15:09:23,831 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_108| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4))) [2019-12-07 15:09:23,909 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_108| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4))) [2019-12-07 15:09:23,988 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_108| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|)) [2019-12-07 15:09:24,067 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_108| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|)) [2019-12-07 15:09:24,167 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 15:09:24,246 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 15:09:24,327 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 15:09:24,408 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 15:09:30,171 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:30,516 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:30,749 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:30,812 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:31,206 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:35,341 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:40,530 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:40,572 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:42,615 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:42,679 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:09:43,224 WARN L192 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 15:09:45,333 WARN L192 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 15:09:45,334 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:09:45,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:09:45,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-07 15:09:45,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098539191] [2019-12-07 15:09:45,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:09:45,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:09:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:09:45,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:09:45,335 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2019-12-07 15:09:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:09:45,347 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2019-12-07 15:09:45,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:09:45,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2019-12-07 15:09:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:09:45,348 INFO L225 Difference]: With dead ends: 69 [2019-12-07 15:09:45,348 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 15:09:45,349 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:09:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 15:09:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-12-07 15:09:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-12-07 15:09:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2019-12-07 15:09:45,352 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2019-12-07 15:09:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:09:45,353 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2019-12-07 15:09:45,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:09:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2019-12-07 15:09:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-07 15:09:45,353 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:09:45,353 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:09:45,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:09:45,554 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:09:45,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:09:45,555 INFO L82 PathProgramCache]: Analyzing trace with hash 980720870, now seen corresponding path program 6 times [2019-12-07 15:09:45,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:09:45,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478609314] [2019-12-07 15:09:45,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:09:45,569 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:09:45,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798808729] [2019-12-07 15:09:45,570 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:09:45,625 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:09:45,625 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:09:45,626 INFO L264 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:09:45,628 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:09:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-12-07 15:09:45,654 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:09:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-12-07 15:09:45,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478609314] [2019-12-07 15:09:45,686 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:09:45,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798808729] [2019-12-07 15:09:45,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1460280891] [2019-12-07 15:09:45,687 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 15:09:45,687 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:09:45,687 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:09:45,688 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:09:45,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:09:45,851 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:45,919 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:46,159 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 15:09:46,233 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_122| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 15:09:46,296 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_122| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 15:09:46,358 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_122| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4))) [2019-12-07 15:09:46,419 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_122| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4))) [2019-12-07 15:09:46,516 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_122| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 15:09:46,579 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 15:09:46,641 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 15:09:46,704 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 15:09:46,766 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 15:09:46,843 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:46,887 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:46,911 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:46,917 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:46,922 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:46,944 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:47,043 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:47,071 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:47,162 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:47,679 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:47,915 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:47,962 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:47,996 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:48,038 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:51,379 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:53,087 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:53,271 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:53,667 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 15:09:53,767 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:09:53,985 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 15:10:00,101 WARN L192 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 15:10:00,101 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:10:00,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:10:00,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-12-07 15:10:00,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678760061] [2019-12-07 15:10:00,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 15:10:00,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:10:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 15:10:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2019-12-07 15:10:00,102 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 11 states. [2019-12-07 15:10:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:00,118 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2019-12-07 15:10:00,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 15:10:00,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2019-12-07 15:10:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:00,119 INFO L225 Difference]: With dead ends: 72 [2019-12-07 15:10:00,119 INFO L226 Difference]: Without dead ends: 58 [2019-12-07 15:10:00,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2019-12-07 15:10:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-07 15:10:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-12-07 15:10:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 15:10:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2019-12-07 15:10:00,123 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 54 [2019-12-07 15:10:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:00,123 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2019-12-07 15:10:00,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 15:10:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2019-12-07 15:10:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-07 15:10:00,124 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:00,124 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:10:00,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:10:00,325 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:00,325 INFO L82 PathProgramCache]: Analyzing trace with hash -761120274, now seen corresponding path program 7 times [2019-12-07 15:10:00,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:10:00,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954728777] [2019-12-07 15:10:00,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:00,343 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:10:00,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420218366] [2019-12-07 15:10:00,344 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:10:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:10:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:10:01,055 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 15:10:01,055 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:10:01,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:10:01,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:10:01 BoogieIcfgContainer [2019-12-07 15:10:01,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:10:01,325 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:10:01,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:10:01,325 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:10:01,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:07:54" (3/4) ... [2019-12-07 15:10:01,327 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:10:01,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_265dda23-84c5-442d-a0a7-99189fa040ae/bin/utaipan/witness.graphml [2019-12-07 15:10:01,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:10:01,377 INFO L168 Benchmark]: Toolchain (without parser) took 128195.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -63.4 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:01,377 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:10:01,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:01,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.68 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 15:10:01,378 INFO L168 Benchmark]: Boogie Preprocessor took 20.52 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 15:10:01,378 INFO L168 Benchmark]: RCFGBuilder took 1154.68 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 15:10:01,378 INFO L168 Benchmark]: TraceAbstraction took 126739.63 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:01,378 INFO L168 Benchmark]: Witness Printer took 51.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:01,379 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.68 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 20.52 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 1154.68 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 126739.63 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * Witness Printer took 51.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 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[10]; [L5] int i; [L6] i = 0 [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND FALSE !(i < 10) [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 < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 10) [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 < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 10) [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<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND FALSE !(i<10 -1) [L46] x[10 -1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND FALSE !(i > 10/2) [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 10 [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 10) [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: 126.6s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 0 SDslu, 165 SDs, 0 SdLazy, 137 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 685 GetRequests, 590 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 27.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=9, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 306 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 473 ConstructedInterpolants, 0 QuantifiedInterpolants, 22101 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1382 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1410/1528 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...