./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI --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 8c067034d8676e097c36fd744c405062d302fbf2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:51,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:51,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:51,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:51,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:51,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:51,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:51,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:51,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:51,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:51,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:51,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:51,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:51,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:51,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:51,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:51,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:51,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:51,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:51,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:51,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:51,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:51,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:51,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:51,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:51,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:51,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:51,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:51,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:51,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:51,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:51,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:51,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:51,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:51,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:51,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:51,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:51,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:51,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:51,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:51,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:51,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:51,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:51,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:51,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:51,640 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:51,641 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:51,641 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:51,641 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:51,641 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:51,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:51,642 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:51,643 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:51,644 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:51,644 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:51,644 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:51,645 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:51,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:51,646 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:51,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:51,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:51,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:51,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:51,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:51,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:51,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:51,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:51,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:51,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:51,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:51,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:51,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:51,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:51,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:51,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:51,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:51,665 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:51,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:51,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:51,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:51,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:51,666 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_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c067034d8676e097c36fd744c405062d302fbf2 [2021-10-11 02:23:51,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:52,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:52,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:52,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:52,026 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:52,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-11 02:23:52,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/data/d4f10a745/af49959a431b4665ab227fdf90056d16/FLAG3130f9caf [2021-10-11 02:23:52,626 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:52,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-11 02:23:52,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/data/d4f10a745/af49959a431b4665ab227fdf90056d16/FLAG3130f9caf [2021-10-11 02:23:52,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/data/d4f10a745/af49959a431b4665ab227fdf90056d16 [2021-10-11 02:23:52,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:52,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:52,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:52,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:52,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:52,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:52" (1/1) ... [2021-10-11 02:23:53,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ce293a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:52, skipping insertion in model container [2021-10-11 02:23:53,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:52" (1/1) ... [2021-10-11 02:23:53,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:53,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:53,212 WARN L226 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_bdf3a105-7f47-4419-b649-560576b29245/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-11 02:23:53,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:53,237 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:53,255 WARN L226 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_bdf3a105-7f47-4419-b649-560576b29245/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-11 02:23:53,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:53,282 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:53,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53 WrapperNode [2021-10-11 02:23:53,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:53,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:53,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:53,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:53,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:53,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:53,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:53,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:53,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... [2021-10-11 02:23:53,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:53,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:53,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:53,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:53,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:53,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:53,766 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:23:53,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:53 BoogieIcfgContainer [2021-10-11 02:23:53,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:53,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:53,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:53,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:53,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:52" (1/3) ... [2021-10-11 02:23:53,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a72e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:53, skipping insertion in model container [2021-10-11 02:23:53,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:53" (2/3) ... [2021-10-11 02:23:53,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a72e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:53, skipping insertion in model container [2021-10-11 02:23:53,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:53" (3/3) ... [2021-10-11 02:23:53,777 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound1.i [2021-10-11 02:23:53,791 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:53,794 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:23:53,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:23:53,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:53,827 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:53,827 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:53,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:53,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:53,827 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:53,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:53,828 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 02:23:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:23:53,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:53,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:23:53,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:53,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:53,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1412902445, now seen corresponding path program 1 times [2021-10-11 02:23:53,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:53,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542310255] [2021-10-11 02:23:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:54,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542310255] [2021-10-11 02:23:54,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:54,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:54,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685218636] [2021-10-11 02:23:54,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:54,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:54,027 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2021-10-11 02:23:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:54,054 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-11 02:23:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:54,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 02:23:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:54,075 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:23:54,075 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:23:54,078 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 [2021-10-11 02:23:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:23:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:23:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:23:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-11 02:23:54,132 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2021-10-11 02:23:54,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:54,132 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-11 02:23:54,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-11 02:23:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:23:54,134 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:54,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:54,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:54,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:54,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1233561970, now seen corresponding path program 1 times [2021-10-11 02:23:54,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:54,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602464950] [2021-10-11 02:23:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:54,173 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:23:54,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837658094] [2021-10-11 02:23:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:54,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:54,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:54,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:54,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602464950] [2021-10-11 02:23:54,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:54,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837658094] [2021-10-11 02:23:54,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:54,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-11 02:23:54,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960702716] [2021-10-11 02:23:54,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:54,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:54,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:54,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:54,419 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 4 states. [2021-10-11 02:23:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:54,438 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-10-11 02:23:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:54,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:23:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:54,440 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:23:54,440 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:23:54,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:23:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:23:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:23:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-11 02:23:54,445 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2021-10-11 02:23:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:54,445 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-11 02:23:54,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-11 02:23:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:23:54,446 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:54,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:54,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:23:54,663 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:54,663 INFO L82 PathProgramCache]: Analyzing trace with hash 463079341, now seen corresponding path program 1 times [2021-10-11 02:23:54,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:54,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56139658] [2021-10-11 02:23:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:54,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:23:54,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924508902] [2021-10-11 02:23:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:54,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:23:54,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:54,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:54,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56139658] [2021-10-11 02:23:54,786 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:54,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924508902] [2021-10-11 02:23:54,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:54,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-11 02:23:54,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596231908] [2021-10-11 02:23:54,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:54,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:54,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:54,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:54,788 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2021-10-11 02:23:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:54,813 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 02:23:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:54,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:23:54,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:54,814 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:23:54,814 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:23:54,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:23:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:23:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 02:23:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:23:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-11 02:23:54,818 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-10-11 02:23:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:54,818 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-11 02:23:54,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-11 02:23:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:23:54,819 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:54,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:55,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:55,035 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:55,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:55,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1470520015, now seen corresponding path program 1 times [2021-10-11 02:23:55,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:55,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38988894] [2021-10-11 02:23:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:55,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:23:55,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868870504] [2021-10-11 02:23:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:55,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:23:55,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:55,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:55,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38988894] [2021-10-11 02:23:55,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:55,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868870504] [2021-10-11 02:23:55,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:55,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:23:55,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419496075] [2021-10-11 02:23:55,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:23:55,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:55,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:23:55,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:23:55,299 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2021-10-11 02:23:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:55,401 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 02:23:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:55,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2021-10-11 02:23:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:55,402 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:23:55,402 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:23:55,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:23:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:23:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:23:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:23:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-11 02:23:55,407 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2021-10-11 02:23:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:55,407 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-11 02:23:55,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:23:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-11 02:23:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:23:55,408 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:55,408 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:55,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:55,623 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:55,623 INFO L82 PathProgramCache]: Analyzing trace with hash 195180174, now seen corresponding path program 1 times [2021-10-11 02:23:55,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:55,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299570332] [2021-10-11 02:23:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:55,639 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:23:55,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262042386] [2021-10-11 02:23:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:55,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:23:55,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:55,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:55,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299570332] [2021-10-11 02:23:55,823 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:55,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262042386] [2021-10-11 02:23:55,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1053167639] [2021-10-11 02:23:55,847 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-11 02:23:55,847 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:55,852 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:55,859 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:55,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:56,370 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:56,802 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-10-11 02:23:57,547 WARN L197 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2021-10-11 02:23:57,685 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-10-11 02:23:57,863 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-10-11 02:23:58,064 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-10-11 02:23:58,250 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-10-11 02:23:58,467 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-10-11 02:23:58,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:23:58,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 11 [2021-10-11 02:23:58,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195630583] [2021-10-11 02:23:58,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:23:58,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:58,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:23:58,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:23:58,471 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 9 states. [2021-10-11 02:23:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:58,583 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-11 02:23:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:23:58,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-10-11 02:23:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:58,585 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:23:58,585 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:23:58,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:23:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:23:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:23:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:23:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:23:58,590 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-10-11 02:23:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:58,591 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:23:58,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:23:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:23:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:23:58,592 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:58,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:58,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:58,803 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:58,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1025582001, now seen corresponding path program 1 times [2021-10-11 02:23:58,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:58,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272905883] [2021-10-11 02:23:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:58,818 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:23:58,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178513200] [2021-10-11 02:23:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:58,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:23:58,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:58,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:58,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272905883] [2021-10-11 02:23:58,951 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:58,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178513200] [2021-10-11 02:23:58,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1989073134] [2021-10-11 02:23:58,955 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-11 02:23:58,955 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:58,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:58,956 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:58,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:59,197 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:59,609 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-10-11 02:24:00,252 WARN L197 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2021-10-11 02:24:00,519 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-10-11 02:24:00,654 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-10-11 02:24:00,991 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-10-11 02:24:00,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:24:00,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 11 [2021-10-11 02:24:00,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890970190] [2021-10-11 02:24:00,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:24:00,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:24:00,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:24:00,995 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2021-10-11 02:24:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:01,075 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-11 02:24:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:24:01,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2021-10-11 02:24:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:01,076 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:24:01,076 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:01,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:24:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:01,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:24:01,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:01,078 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:01,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:24:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:01,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:01,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:01,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:01,666 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-10-11 02:24:01,671 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-11 02:24:01,671 INFO L262 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L258 CegarLoopResult]: At program point L19-2(line 40) the Hoare annotation is: false [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L265 CegarLoopResult]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point L38(lines 38 47) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2021-10-11 02:24:01,672 INFO L262 CegarLoopResult]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2021-10-11 02:24:01,673 INFO L258 CegarLoopResult]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse17 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= ULTIMATE.start_main_~B~0 1)) (.cse2 (= (select |#length| |#t~string1.base|) 10)) (.cse3 (= |#NULL.base| 0)) (.cse4 (= (select .cse17 |#t~string0.offset|) 48)) (.cse5 (= (select .cse17 (+ |#t~string0.offset| 1)) 0)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= 2 (select |#length| |#t~string0.base|))) (.cse8 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (< 0 |#StackHeapBarrier|)) (.cse11 (= ULTIMATE.start_main_~q~0 0)) (.cse12 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= (select |#valid| |#t~string1.base|) 1)) (.cse15 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse16 (= |#t~string0.offset| 0))) (or (and .cse0 .cse1 (= ~counter~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse0 .cse1 .cse2 (<= (mod ULTIMATE.start_main_~B~0 4294967296) (mod ULTIMATE.start_main_~r~0 4294967296)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= ~counter~0 1) .cse10 .cse11 .cse12 .cse13 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~b~0) .cse14 .cse15 .cse16)))) [2021-10-11 02:24:01,673 INFO L262 CegarLoopResult]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2021-10-11 02:24:01,673 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-11 02:24:01,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:01 BoogieIcfgContainer [2021-10-11 02:24:01,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:01,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:01,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:01,697 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:01,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:53" (3/4) ... [2021-10-11 02:24:01,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:01,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:24:01,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:01,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:24:01,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:01,756 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3a105-7f47-4419-b649-560576b29245/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:01,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:01,761 INFO L168 Benchmark]: Toolchain (without parser) took 8778.38 ms. Allocated memory was 86.0 MB in the beginning and 157.3 MB in the end (delta: 71.3 MB). Free memory was 64.9 MB in the beginning and 92.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 43.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:01,761 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:01,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.91 ms. Allocated memory is still 86.0 MB. Free memory was 64.7 MB in the beginning and 62.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:01,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 86.0 MB. Free memory was 61.8 MB in the beginning and 60.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:01,763 INFO L168 Benchmark]: Boogie Preprocessor took 24.52 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 59.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:01,764 INFO L168 Benchmark]: RCFGBuilder took 420.58 ms. Allocated memory is still 86.0 MB. Free memory was 59.3 MB in the beginning and 43.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:01,764 INFO L168 Benchmark]: TraceAbstraction took 7925.41 ms. Allocated memory was 86.0 MB in the beginning and 157.3 MB in the end (delta: 71.3 MB). Free memory was 42.7 MB in the beginning and 94.4 MB in the end (delta: -51.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:01,765 INFO L168 Benchmark]: Witness Printer took 63.85 ms. Allocated memory is still 157.3 MB. Free memory was 94.4 MB in the beginning and 92.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:01,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.91 ms. Allocated memory is still 86.0 MB. Free memory was 64.7 MB in the beginning and 62.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 86.0 MB. Free memory was 61.8 MB in the beginning and 60.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.52 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 59.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 420.58 ms. Allocated memory is still 86.0 MB. Free memory was 59.3 MB in the beginning and 43.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7925.41 ms. Allocated memory was 86.0 MB in the beginning and 157.3 MB in the end (delta: 71.3 MB). Free memory was 42.7 MB in the beginning and 94.4 MB in the end (delta: -51.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. * Witness Printer took 63.85 ms. Allocated memory is still 157.3 MB. Free memory was 94.4 MB in the beginning and 92.3 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: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((((((((("divbin2.c" == 0 && B == 1) && counter == 0) && unknown-#length-unknown["divbin2.c"] == 10) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && B == b) && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin2.c") && #NULL == 0) && \valid["divbin2.c"] == 1) && A == r) && "0" == 0) || ((((((((((((((((((("divbin2.c" == 0 && B == 1) && unknown-#length-unknown["divbin2.c"] == 10) && B % 4294967296 <= r % 4294967296) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin2.c") && #NULL == 0) && B * 2 == b) && \valid["divbin2.c"] == 1) && A == r) && "0" == 0) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 34 SDslu, 79 SDs, 0 SdLazy, 142 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 168 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 3093 SizeOfPredicates, 9 NumberOfNonLiveVariables, 295 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 28/32 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: OVERALL_TIME[ms]: 766, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 26, TOOLS_POST_TIME[ms]: 314, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 26, TOOLS_QUANTIFIERELIM_TIME[ms]: 302, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 161, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 50, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME[ms]: 335, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME[ms]: 41, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 32, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 31, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 23, DAG_COMPRESSION_PROCESSED_NODES: 206, DAG_COMPRESSION_RETAINED_NODES: 60, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...