./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s12iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s12iff.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b77a49aa9e2fe58d44cd30e10a0c2d54049996239a42f9eb129163eea28c3fb ................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-e943c26 [2021-10-24 10:53:07,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:53:07,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:53:07,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:53:07,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:53:07,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:53:07,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:53:07,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:53:07,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:53:07,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:53:07,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:53:07,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:53:07,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:53:07,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:53:07,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:53:07,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:53:07,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:53:07,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:53:07,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:53:07,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:53:07,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:53:07,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:53:07,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:53:07,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:53:07,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:53:07,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:53:07,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:53:07,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:53:07,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:53:07,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:53:07,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:53:07,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:53:07,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:53:07,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:53:07,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:53:07,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:53:07,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:53:07,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:53:07,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:53:07,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:53:07,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:53:07,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:53:07,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:53:07,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:53:07,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:53:07,727 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:53:07,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:53:07,728 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:53:07,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:53:07,729 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:53:07,729 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:53:07,730 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:53:07,730 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:53:07,731 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:53:07,731 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:53:07,731 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:53:07,732 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:53:07,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:53:07,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:53:07,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:53:07,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:53:07,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:53:07,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:53:07,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:53:07,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:53:07,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:53:07,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:53:07,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:53:07,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:53:07,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:53:07,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:53:07,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:53:07,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:53:07,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:53:07,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:53:07,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:53:07,738 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:53:07,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:53:07,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:53:07,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:53:07,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:53:07,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b77a49aa9e2fe58d44cd30e10a0c2d54049996239a42f9eb129163eea28c3fb [2021-10-24 10:53:08,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:53:08,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:53:08,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:53:08,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:53:08,052 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:53:08,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/array-fpi/s12iff.c [2021-10-24 10:53:08,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/data/73a360985/dd075cab987f449aa6d1d540d1d57200/FLAGe1224974e [2021-10-24 10:53:08,674 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:53:08,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/sv-benchmarks/c/array-fpi/s12iff.c [2021-10-24 10:53:08,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/data/73a360985/dd075cab987f449aa6d1d540d1d57200/FLAGe1224974e [2021-10-24 10:53:09,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/data/73a360985/dd075cab987f449aa6d1d540d1d57200 [2021-10-24 10:53:09,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:53:09,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:53:09,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:53:09,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:53:09,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:53:09,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f92e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09, skipping insertion in model container [2021-10-24 10:53:09,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:53:09,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:53:09,296 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/sv-benchmarks/c/array-fpi/s12iff.c[589,602] [2021-10-24 10:53:09,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:53:09,350 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:53:09,368 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/sv-benchmarks/c/array-fpi/s12iff.c[589,602] [2021-10-24 10:53:09,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:53:09,398 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:53:09,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09 WrapperNode [2021-10-24 10:53:09,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:53:09,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:53:09,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:53:09,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:53:09,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:53:09,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:53:09,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:53:09,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:53:09,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:53:09,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:53:09,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:53:09,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:53:09,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (1/1) ... [2021-10-24 10:53:09,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:53:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:53:09,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:53:09,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:53:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:53:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:53:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:53:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:53:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:53:09,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:53:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:53:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:53:10,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:53:10,087 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-24 10:53:10,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:53:10 BoogieIcfgContainer [2021-10-24 10:53:10,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:53:10,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:53:10,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:53:10,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:53:10,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:53:09" (1/3) ... [2021-10-24 10:53:10,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:53:10, skipping insertion in model container [2021-10-24 10:53:10,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:09" (2/3) ... [2021-10-24 10:53:10,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:53:10, skipping insertion in model container [2021-10-24 10:53:10,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:53:10" (3/3) ... [2021-10-24 10:53:10,104 INFO L111 eAbstractionObserver]: Analyzing ICFG s12iff.c [2021-10-24 10:53:10,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:53:10,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:53:10,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:53:10,177 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:53:10,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:53:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:53:10,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:10,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:53:10,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:53:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:10,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1162179950, now seen corresponding path program 1 times [2021-10-24 10:53:10,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:53:10,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114809828] [2021-10-24 10:53:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:10,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:53:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:53:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:10,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:53:10,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114809828] [2021-10-24 10:53:10,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114809828] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:53:10,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:53:10,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:53:10,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135941116] [2021-10-24 10:53:10,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:53:10,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:53:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:53:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:53:10,542 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:53:10,607 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-10-24 10:53:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:53:10,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 10:53:10,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:53:10,622 INFO L225 Difference]: With dead ends: 20 [2021-10-24 10:53:10,622 INFO L226 Difference]: Without dead ends: 9 [2021-10-24 10:53:10,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:53:10,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-24 10:53:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-24 10:53:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-10-24 10:53:10,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-10-24 10:53:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:53:10,671 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-24 10:53:10,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-10-24 10:53:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:53:10,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:10,674 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:53:10,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:53:10,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:53:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1871859412, now seen corresponding path program 1 times [2021-10-24 10:53:10,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:53:10,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467589788] [2021-10-24 10:53:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:10,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:53:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:53:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:53:10,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:53:10,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467589788] [2021-10-24 10:53:10,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467589788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:53:10,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:53:10,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:53:10,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259683268] [2021-10-24 10:53:10,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:53:10,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:53:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:53:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:53:10,828 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:53:10,887 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-10-24 10:53:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:53:10,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:53:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:53:10,890 INFO L225 Difference]: With dead ends: 15 [2021-10-24 10:53:10,890 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 10:53:10,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:53:10,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 10:53:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 10:53:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-24 10:53:10,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-10-24 10:53:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:53:10,902 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-24 10:53:10,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-24 10:53:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:53:10,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:10,905 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:53:10,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:53:10,909 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:53:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:10,910 INFO L82 PathProgramCache]: Analyzing trace with hash 908788323, now seen corresponding path program 1 times [2021-10-24 10:53:10,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:53:10,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068305120] [2021-10-24 10:53:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:10,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:53:10,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:53:10,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30895280] [2021-10-24 10:53:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:10,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:53:10,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:53:10,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:53:11,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:53:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:53:11,084 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:53:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:53:11,165 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:53:11,165 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:53:11,167 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:53:11,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-24 10:53:11,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:53:11,402 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:53:11,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:53:11 BoogieIcfgContainer [2021-10-24 10:53:11,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:53:11,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:53:11,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:53:11,441 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:53:11,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:53:10" (3/4) ... [2021-10-24 10:53:11,444 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:53:11,501 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac251a3-33ca-4003-bf7b-d5e31ebdd80a/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:53:11,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:53:11,504 INFO L168 Benchmark]: Toolchain (without parser) took 2434.82 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 91.8 MB in the beginning and 98.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:11,505 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 121.6 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:53:11,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.80 ms. Allocated memory is still 121.6 MB. Free memory was 91.8 MB in the beginning and 95.1 MB in the end (delta: -3.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:11,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.98 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 93.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:53:11,507 INFO L168 Benchmark]: Boogie Preprocessor took 34.02 ms. Allocated memory is still 121.6 MB. Free memory was 93.4 MB in the beginning and 92.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:53:11,508 INFO L168 Benchmark]: RCFGBuilder took 608.65 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 75.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:11,509 INFO L168 Benchmark]: TraceAbstraction took 1344.39 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 75.3 MB in the beginning and 100.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:11,510 INFO L168 Benchmark]: Witness Printer took 61.39 ms. Allocated memory is still 146.8 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:11,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 121.6 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.80 ms. Allocated memory is still 121.6 MB. Free memory was 91.8 MB in the beginning and 95.1 MB in the end (delta: -3.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.98 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 93.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.02 ms. Allocated memory is still 121.6 MB. Free memory was 93.4 MB in the beginning and 92.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 608.65 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 75.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1344.39 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 75.3 MB in the beginning and 100.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Witness Printer took 61.39 ms. Allocated memory is still 146.8 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i