./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan --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 1b2717e5ac522d385ef548b8caf01421a2c4872b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2020-12-09 07:59:08,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:59:08,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:59:08,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:59:08,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:59:08,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:59:08,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:59:08,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:59:08,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:59:08,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:59:08,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:59:08,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:59:08,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:59:08,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:59:08,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:59:08,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:59:08,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:59:08,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:59:08,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:59:08,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:59:08,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:59:08,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:59:08,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:59:08,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:59:08,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:59:08,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:59:08,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:59:08,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:59:08,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:59:08,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:59:08,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:59:08,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:59:08,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:59:08,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:59:08,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:59:08,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:59:08,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:59:08,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:59:08,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:59:08,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:59:08,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:59:08,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:59:08,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:59:08,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:59:08,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:59:08,567 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:59:08,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:59:08,568 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:59:08,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:59:08,578 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:59:08,578 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:59:08,578 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:59:08,579 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:59:08,579 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:59:08,579 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:59:08,579 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:59:08,579 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:59:08,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:59:08,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:59:08,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:59:08,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:59:08,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:59:08,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:59:08,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:59:08,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:59:08,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:59:08,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:59:08,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:59:08,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:59:08,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:59:08,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:59:08,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:59:08,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:59:08,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:59:08,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:59:08,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:59:08,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:59:08,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:59:08,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:59:08,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:59:08,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:59:08,584 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-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2717e5ac522d385ef548b8caf01421a2c4872b [2020-12-09 07:59:08,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:59:08,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:59:08,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:59:08,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:59:08,784 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:59:08,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c [2020-12-09 07:59:08,835 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/data/4bd7a4b29/8bb5657942d947868d9a9b7f0b1c1ef1/FLAGeb5b665fb [2020-12-09 07:59:09,226 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:59:09,227 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c [2020-12-09 07:59:09,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/data/4bd7a4b29/8bb5657942d947868d9a9b7f0b1c1ef1/FLAGeb5b665fb [2020-12-09 07:59:09,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/data/4bd7a4b29/8bb5657942d947868d9a9b7f0b1c1ef1 [2020-12-09 07:59:09,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:59:09,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:59:09,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:59:09,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:59:09,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:59:09,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ad509e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09, skipping insertion in model container [2020-12-09 07:59:09,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:59:09,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:59:09,365 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c[573,586] [2020-12-09 07:59:09,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:59:09,381 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:59:09,391 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound2.c[573,586] [2020-12-09 07:59:09,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:59:09,406 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:59:09,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09 WrapperNode [2020-12-09 07:59:09,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:59:09,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:59:09,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:59:09,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:59:09,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:59:09,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:59:09,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:59:09,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:59:09,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... [2020-12-09 07:59:09,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:59:09,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:59:09,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:59:09,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:59:09,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/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 [2020-12-09 07:59:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:59:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:59:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:59:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:59:09,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:59:09,782 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 07:59:09,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:59:09 BoogieIcfgContainer [2020-12-09 07:59:09,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:59:09,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:59:09,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:59:09,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:59:09,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:59:09" (1/3) ... [2020-12-09 07:59:09,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b71a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:59:09, skipping insertion in model container [2020-12-09 07:59:09,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:59:09" (2/3) ... [2020-12-09 07:59:09,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b71a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:59:09, skipping insertion in model container [2020-12-09 07:59:09,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:59:09" (3/3) ... [2020-12-09 07:59:09,792 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound2.c [2020-12-09 07:59:09,803 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:59:09,806 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 07:59:09,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 07:59:09,834 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:59:09,834 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:59:09,835 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:59:09,835 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:59:09,835 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:59:09,835 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:59:09,835 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:59:09,835 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:59:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 07:59:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:59:09,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:59:09,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:59:09,851 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:59:09,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:59:09,856 INFO L82 PathProgramCache]: Analyzing trace with hash 98480205, now seen corresponding path program 1 times [2020-12-09 07:59:09,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:59:09,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120475350] [2020-12-09 07:59:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:59:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:59:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:59:09,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120475350] [2020-12-09 07:59:09,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:59:09,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:59:09,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200846008] [2020-12-09 07:59:09,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:59:10,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:59:10,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:59:10,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:59:10,022 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-09 07:59:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:59:10,035 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-12-09 07:59:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:59:10,036 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 07:59:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:59:10,041 INFO L225 Difference]: With dead ends: 25 [2020-12-09 07:59:10,042 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 07:59:10,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:59:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 07:59:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 07:59:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 07:59:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-12-09 07:59:10,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-12-09 07:59:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:59:10,067 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-12-09 07:59:10,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:59:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-09 07:59:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:59:10,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:59:10,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:59:10,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:59:10,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:59:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:59:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash 97621232, now seen corresponding path program 1 times [2020-12-09 07:59:10,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:59:10,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446955468] [2020-12-09 07:59:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:59:10,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:59:10,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19723443] [2020-12-09 07:59:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/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 [2020-12-09 07:59:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:59:10,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 07:59:10,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:59:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:59:10,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:59:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:59:10,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446955468] [2020-12-09 07:59:10,227 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:59:10,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19723443] [2020-12-09 07:59:10,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:59:10,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 07:59:10,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703669778] [2020-12-09 07:59:10,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:59:10,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:59:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:59:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:59:10,230 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2020-12-09 07:59:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:59:10,285 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-12-09 07:59:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:59:10,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-12-09 07:59:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:59:10,286 INFO L225 Difference]: With dead ends: 20 [2020-12-09 07:59:10,286 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 07:59:10,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:59:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 07:59:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 9. [2020-12-09 07:59:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 07:59:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-09 07:59:10,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2020-12-09 07:59:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:59:10,292 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-09 07:59:10,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:59:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-09 07:59:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:59:10,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:59:10,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:59:10,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 07:59:10,495 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:59:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:59:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1268746775, now seen corresponding path program 1 times [2020-12-09 07:59:10,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:59:10,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536626601] [2020-12-09 07:59:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:59:10,536 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:59:10,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641386224] [2020-12-09 07:59:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/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 [2020-12-09 07:59:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:59:10,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:59:10,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:59:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:59:10,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:59:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:59:10,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536626601] [2020-12-09 07:59:10,684 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:59:10,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641386224] [2020-12-09 07:59:10,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:59:10,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 07:59:10,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597008529] [2020-12-09 07:59:10,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:59:10,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:59:10,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:59:10,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:59:10,686 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2020-12-09 07:59:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:59:10,711 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-12-09 07:59:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:59:10,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 07:59:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:59:10,712 INFO L225 Difference]: With dead ends: 23 [2020-12-09 07:59:10,712 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 07:59:10,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:59:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 07:59:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2020-12-09 07:59:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 07:59:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-09 07:59:10,718 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-12-09 07:59:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:59:10,718 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-09 07:59:10,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:59:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-09 07:59:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:59:10,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:59:10,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:59:10,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:59:10,920 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:59:10,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:59:10,922 INFO L82 PathProgramCache]: Analyzing trace with hash 546169794, now seen corresponding path program 1 times [2020-12-09 07:59:10,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:59:10,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095307375] [2020-12-09 07:59:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:59:10,960 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:59:10,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398533700] [2020-12-09 07:59:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/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 [2020-12-09 07:59:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:59:11,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 07:59:11,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:59:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:59:11,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:59:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:59:11,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095307375] [2020-12-09 07:59:11,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:59:11,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398533700] [2020-12-09 07:59:11,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:59:11,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-09 07:59:11,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126072135] [2020-12-09 07:59:11,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 07:59:11,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:59:11,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 07:59:11,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-09 07:59:11,234 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 11 states. [2020-12-09 07:59:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:59:11,322 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 07:59:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:59:11,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2020-12-09 07:59:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:59:11,323 INFO L225 Difference]: With dead ends: 19 [2020-12-09 07:59:11,323 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 07:59:11,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:59:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 07:59:11,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 07:59:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 07:59:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 07:59:11,326 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-12-09 07:59:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:59:11,326 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 07:59:11,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 07:59:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 07:59:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 07:59:11,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:59:11,327 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 07:59:11,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:59:11,528 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:59:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:59:11,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1998402165, now seen corresponding path program 1 times [2020-12-09 07:59:11,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:59:11,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11160277] [2020-12-09 07:59:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:59:11,564 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:59:11,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655218951] [2020-12-09 07:59:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/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 [2020-12-09 07:59:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:59:11,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:59:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:59:11,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:59:11,638 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:59:11,638 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:59:11,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:59:11,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:59:11 BoogieIcfgContainer [2020-12-09 07:59:11,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:59:11,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:59:11,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:59:11,886 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:59:11,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:59:09" (3/4) ... [2020-12-09 07:59:11,888 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:59:11,921 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_060318ae-e0b7-407e-bd42-a46748e54d09/bin/utaipan/witness.graphml [2020-12-09 07:59:11,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:59:11,922 INFO L168 Benchmark]: Toolchain (without parser) took 2671.69 ms. Allocated memory is still 138.4 MB. Free memory was 118.5 MB in the beginning and 77.5 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:59:11,922 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:59:11,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.96 ms. Allocated memory is still 138.4 MB. Free memory was 118.5 MB in the beginning and 108.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:59:11,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.92 ms. Allocated memory is still 138.4 MB. Free memory was 108.7 MB in the beginning and 107.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:59:11,923 INFO L168 Benchmark]: Boogie Preprocessor took 20.50 ms. Allocated memory is still 138.4 MB. Free memory was 107.2 MB in the beginning and 105.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:59:11,924 INFO L168 Benchmark]: RCFGBuilder took 327.19 ms. Allocated memory is still 138.4 MB. Free memory was 105.9 MB in the beginning and 85.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:59:11,924 INFO L168 Benchmark]: TraceAbstraction took 2099.83 ms. Allocated memory is still 138.4 MB. Free memory was 85.3 MB in the beginning and 79.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:59:11,924 INFO L168 Benchmark]: Witness Printer took 34.80 ms. Allocated memory is still 138.4 MB. Free memory was 79.6 MB in the beginning and 77.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:59:11,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 155.96 ms. Allocated memory is still 138.4 MB. Free memory was 118.5 MB in the beginning and 108.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.92 ms. Allocated memory is still 138.4 MB. Free memory was 108.7 MB in the beginning and 107.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.50 ms. Allocated memory is still 138.4 MB. Free memory was 107.2 MB in the beginning and 105.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 327.19 ms. Allocated memory is still 138.4 MB. Free memory was 105.9 MB in the beginning and 85.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2099.83 ms. Allocated memory is still 138.4 MB. Free memory was 85.3 MB in the beginning and 79.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 34.80 ms. Allocated memory is still 138.4 MB. Free memory was 79.6 MB in the beginning and 77.5 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: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<2 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<2 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND FALSE !(counter++<2) [L16] COND TRUE !(cond) VAL [counter=3] [L18] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 50 SDslu, 45 SDs, 0 SdLazy, 51 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1145 SizeOfPredicates, 22 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...