./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp5f.c --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_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/indp5f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/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 261a32248e9ac2597caf1e85d7c8698e07c6c32d ..................................................................................................................................................................................................................................................................................................................................................................................... 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 19:27:02,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:27:02,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:27:02,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:27:02,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:27:02,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:27:02,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:27:02,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:27:02,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:27:02,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:27:02,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:27:02,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:27:02,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:27:02,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:27:02,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:27:02,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:27:02,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:27:02,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:27:02,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:27:02,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:27:02,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:27:02,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:27:02,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:27:02,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:27:02,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:27:02,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:27:02,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:27:02,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:27:02,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:27:02,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:27:02,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:27:02,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:27:02,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:27:02,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:27:02,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:27:02,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:27:02,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:27:02,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:27:02,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:27:02,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:27:02,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:27:02,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:27:02,610 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:27:02,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:27:02,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:27:02,611 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:27:02,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:27:02,611 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:27:02,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:27:02,611 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:27:02,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:27:02,611 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:27:02,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:27:02,612 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:27:02,612 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:27:02,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:27:02,612 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:27:02,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:27:02,613 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:27:02,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:27:02,614 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:27:02,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:27:02,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:27:02,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:27:02,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:27:02,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:27:02,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:27:02,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:27:02,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:27:02,615 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:27:02,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:27:02,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:27:02,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:27:02,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:27:02,616 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_861532bd-61c2-4fe8-aa9a-925307410c05/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 -> 261a32248e9ac2597caf1e85d7c8698e07c6c32d [2019-12-07 19:27:02,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:27:02,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:27:02,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:27:02,734 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:27:02,735 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:27:02,735 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/../../sv-benchmarks/c/array-fpi/indp5f.c [2019-12-07 19:27:02,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/data/fbdfee6ad/51094162b0774772aa0f2b2c747970fb/FLAGa7ac14054 [2019-12-07 19:27:03,192 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:27:03,192 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/sv-benchmarks/c/array-fpi/indp5f.c [2019-12-07 19:27:03,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/data/fbdfee6ad/51094162b0774772aa0f2b2c747970fb/FLAGa7ac14054 [2019-12-07 19:27:03,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/data/fbdfee6ad/51094162b0774772aa0f2b2c747970fb [2019-12-07 19:27:03,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:27:03,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:27:03,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:27:03,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:27:03,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:27:03,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516e720e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03, skipping insertion in model container [2019-12-07 19:27:03,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:27:03,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:27:03,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:27:03,713 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:27:03,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:27:03,771 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:27:03,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03 WrapperNode [2019-12-07 19:27:03,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:27:03,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:27:03,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:27:03,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:27:03,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:27:03,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:27:03,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:27:03,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:27:03,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... [2019-12-07 19:27:03,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:27:03,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:27:03,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:27:03,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:27:03,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/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 19:27:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:27:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 19:27:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 19:27:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:27:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:27:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 19:27:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:27:04,081 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:27:04,082 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-07 19:27:04,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:04 BoogieIcfgContainer [2019-12-07 19:27:04,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:27:04,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:27:04,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:27:04,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:27:04,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:27:03" (1/3) ... [2019-12-07 19:27:04,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efbe479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:27:04, skipping insertion in model container [2019-12-07 19:27:04,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:03" (2/3) ... [2019-12-07 19:27:04,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efbe479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:27:04, skipping insertion in model container [2019-12-07 19:27:04,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:04" (3/3) ... [2019-12-07 19:27:04,088 INFO L109 eAbstractionObserver]: Analyzing ICFG indp5f.c [2019-12-07 19:27:04,096 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:27:04,100 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:27:04,107 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:27:04,121 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:27:04,121 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:27:04,121 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:27:04,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:27:04,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:27:04,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:27:04,121 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:27:04,122 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:27:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-12-07 19:27:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 19:27:04,134 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:04,134 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:04,135 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:04,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1426561532, now seen corresponding path program 1 times [2019-12-07 19:27:04,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:27:04,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581854940] [2019-12-07 19:27:04,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:27:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:27:04,262 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 19:27:04,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581854940] [2019-12-07 19:27:04,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:27:04,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:27:04,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747418415] [2019-12-07 19:27:04,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:27:04,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:27:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:27:04,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:27:04,277 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-12-07 19:27:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:27:04,308 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2019-12-07 19:27:04,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:27:04,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 19:27:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:27:04,315 INFO L225 Difference]: With dead ends: 24 [2019-12-07 19:27:04,315 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 19:27:04,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:27:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 19:27:04,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 19:27:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 19:27:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-12-07 19:27:04,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2019-12-07 19:27:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:27:04,338 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-12-07 19:27:04,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:27:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2019-12-07 19:27:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 19:27:04,338 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:04,338 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:04,338 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:04,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:04,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1435276363, now seen corresponding path program 1 times [2019-12-07 19:27:04,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:27:04,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670809248] [2019-12-07 19:27:04,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:27:04,348 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:27:04,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825629808] [2019-12-07 19:27:04,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/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 19:27:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:27:04,383 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 19:27:04,387 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:27:04,407 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 19:27:04,407 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:27:04,417 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 19:27:04,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670809248] [2019-12-07 19:27:04,417 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:27:04,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825629808] [2019-12-07 19:27:04,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:27:04,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-12-07 19:27:04,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908401519] [2019-12-07 19:27:04,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:27:04,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:27:04,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:27:04,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:27:04,419 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 5 states. [2019-12-07 19:27:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:27:04,452 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-12-07 19:27:04,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:27:04,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 19:27:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:27:04,453 INFO L225 Difference]: With dead ends: 21 [2019-12-07 19:27:04,453 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 19:27:04,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:27:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 19:27:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 19:27:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 19:27:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-12-07 19:27:04,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2019-12-07 19:27:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:27:04,457 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 19:27:04,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:27:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-12-07 19:27:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 19:27:04,458 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:04,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:04,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:27:04,659 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:04,660 INFO L82 PathProgramCache]: Analyzing trace with hash 879254361, now seen corresponding path program 1 times [2019-12-07 19:27:04,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:27:04,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968511840] [2019-12-07 19:27:04,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:27:04,687 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:27:04,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659192875] [2019-12-07 19:27:04,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/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 19:27:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:27:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:27:04,779 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 19:27:04,779 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:27:04,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:27:05,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:27:05 BoogieIcfgContainer [2019-12-07 19:27:05,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:27:05,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:27:05,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:27:05,034 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:27:05,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:04" (3/4) ... [2019-12-07 19:27:05,036 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 19:27:05,070 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_861532bd-61c2-4fe8-aa9a-925307410c05/bin/utaipan/witness.graphml [2019-12-07 19:27:05,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:27:05,072 INFO L168 Benchmark]: Toolchain (without parser) took 1513.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 942.0 MB in the beginning and 974.4 MB in the end (delta: -32.4 MB). Peak memory consumption was 52.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:05,072 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:27:05,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:05,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.19 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:05,073 INFO L168 Benchmark]: Boogie Preprocessor took 22.62 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:05,073 INFO L168 Benchmark]: RCFGBuilder took 260.84 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: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:05,074 INFO L168 Benchmark]: TraceAbstraction took 950.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 977.1 MB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:05,074 INFO L168 Benchmark]: Witness Printer took 36.93 ms. Allocated memory is still 1.1 GB. Free memory was 977.1 MB in the beginning and 974.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:05,076 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 213.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.19 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.62 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 260.84 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: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 950.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 977.1 MB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. * Witness Printer took 36.93 ms. Allocated memory is still 1.1 GB. Free memory was 977.1 MB in the beginning and 974.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long *a = malloc(sizeof(long long)*N); [L24] long long sum[1]; [L26] sum[0] = 1 [L27] i=0 VAL [N=1] [L27] COND TRUE i