./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/heapsort.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_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/heapsort.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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 149fdbbcb5d1f0b05c2de89b523b2d2cfc590a6f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:24:46,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:46,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:46,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:46,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:46,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:46,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:46,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:46,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:46,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:46,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:46,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:46,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:46,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:46,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:46,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:46,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:46,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:46,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:46,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:46,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:46,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:46,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:46,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:46,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:46,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:46,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:46,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:46,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:46,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:46,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:46,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:46,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:46,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:46,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:46,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:46,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:46,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:46,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:46,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:46,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:46,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:46,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:46,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:46,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:46,747 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:46,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:46,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:46,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:46,748 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:46,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:46,749 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:46,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:46,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:46,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:46,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:46,751 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:46,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:46,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:46,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:46,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:46,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:46,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:46,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:46,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:46,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:46,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:46,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:46,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:46,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:46,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:46,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:46,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:46,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:46,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:46,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:46,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:46,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:46,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:46,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:46,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:46,759 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_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 149fdbbcb5d1f0b05c2de89b523b2d2cfc590a6f [2021-10-11 02:24:47,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:47,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:47,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:47,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:47,074 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:47,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-invgen/heapsort.i [2021-10-11 02:24:47,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/data/a53733c94/530238da76f140c49b90b9b1497a9bd9/FLAG1e035c744 [2021-10-11 02:24:47,613 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:47,613 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/sv-benchmarks/c/loop-invgen/heapsort.i [2021-10-11 02:24:47,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/data/a53733c94/530238da76f140c49b90b9b1497a9bd9/FLAG1e035c744 [2021-10-11 02:24:48,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/data/a53733c94/530238da76f140c49b90b9b1497a9bd9 [2021-10-11 02:24:48,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:48,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:48,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:48,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:48,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:48,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c588f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48, skipping insertion in model container [2021-10-11 02:24:48,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:48,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:48,197 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_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/sv-benchmarks/c/loop-invgen/heapsort.i[893,906] [2021-10-11 02:24:48,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:48,224 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:48,236 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_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/sv-benchmarks/c/loop-invgen/heapsort.i[893,906] [2021-10-11 02:24:48,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:48,259 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:48,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48 WrapperNode [2021-10-11 02:24:48,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:48,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:48,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:48,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:48,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:48,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:48,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:48,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:48,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... [2021-10-11 02:24:48,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:48,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:48,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:48,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:48,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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 02:24:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:48,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:48,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:48,838 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-11 02:24:48,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:48 BoogieIcfgContainer [2021-10-11 02:24:48,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:48,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:48,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:48,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:48,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:48" (1/3) ... [2021-10-11 02:24:48,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5f0527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:48, skipping insertion in model container [2021-10-11 02:24:48,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:48" (2/3) ... [2021-10-11 02:24:48,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5f0527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:48, skipping insertion in model container [2021-10-11 02:24:48,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:48" (3/3) ... [2021-10-11 02:24:48,865 INFO L111 eAbstractionObserver]: Analyzing ICFG heapsort.i [2021-10-11 02:24:48,878 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:48,895 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2021-10-11 02:24:48,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-10-11 02:24:48,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:48,942 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:48,942 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:48,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:48,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:48,942 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:48,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:48,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2021-10-11 02:24:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:48,963 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:48,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:48,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:48,971 INFO L82 PathProgramCache]: Analyzing trace with hash 739161136, now seen corresponding path program 1 times [2021-10-11 02:24:48,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:48,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716879008] [2021-10-11 02:24:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:49,175 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 02:24:49,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716879008] [2021-10-11 02:24:49,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:49,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:49,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357281730] [2021-10-11 02:24:49,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:49,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:49,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:49,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:49,194 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2021-10-11 02:24:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:49,351 INFO L93 Difference]: Finished difference Result 135 states and 175 transitions. [2021-10-11 02:24:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:49,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:24:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:49,363 INFO L225 Difference]: With dead ends: 135 [2021-10-11 02:24:49,365 INFO L226 Difference]: Without dead ends: 67 [2021-10-11 02:24:49,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-11 02:24:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2021-10-11 02:24:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-10-11 02:24:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-10-11 02:24:49,411 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 7 [2021-10-11 02:24:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:49,411 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-10-11 02:24:49,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-10-11 02:24:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:49,412 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:49,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:49,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:49,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:49,414 INFO L82 PathProgramCache]: Analyzing trace with hash 739184968, now seen corresponding path program 1 times [2021-10-11 02:24:49,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:49,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19625685] [2021-10-11 02:24:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:49,490 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 02:24:49,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19625685] [2021-10-11 02:24:49,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:49,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:49,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969747985] [2021-10-11 02:24:49,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:49,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:49,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:49,506 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2021-10-11 02:24:49,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:49,617 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2021-10-11 02:24:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:49,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:24:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:49,619 INFO L225 Difference]: With dead ends: 68 [2021-10-11 02:24:49,619 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 02:24:49,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 02:24:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-10-11 02:24:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 02:24:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-10-11 02:24:49,630 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 7 [2021-10-11 02:24:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:49,631 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-10-11 02:24:49,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-10-11 02:24:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:49,632 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:49,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:49,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:49,632 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash 733162226, now seen corresponding path program 1 times [2021-10-11 02:24:49,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:49,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519647434] [2021-10-11 02:24:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:49,729 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 02:24:49,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519647434] [2021-10-11 02:24:49,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:49,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:49,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855619155] [2021-10-11 02:24:49,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:49,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:49,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:49,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:49,742 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2021-10-11 02:24:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:50,033 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2021-10-11 02:24:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:50,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-10-11 02:24:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:50,039 INFO L225 Difference]: With dead ends: 124 [2021-10-11 02:24:50,039 INFO L226 Difference]: Without dead ends: 116 [2021-10-11 02:24:50,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-11 02:24:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 90. [2021-10-11 02:24:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-10-11 02:24:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-10-11 02:24:50,062 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 7 [2021-10-11 02:24:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:50,062 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-10-11 02:24:50,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-10-11 02:24:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:50,063 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:50,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:50,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:50,064 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:50,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1664408275, now seen corresponding path program 1 times [2021-10-11 02:24:50,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:50,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619755799] [2021-10-11 02:24:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:50,172 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 02:24:50,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619755799] [2021-10-11 02:24:50,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:50,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:24:50,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331994440] [2021-10-11 02:24:50,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:50,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:50,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:50,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:50,178 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand 6 states. [2021-10-11 02:24:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:50,417 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2021-10-11 02:24:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:24:50,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 02:24:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:50,422 INFO L225 Difference]: With dead ends: 109 [2021-10-11 02:24:50,422 INFO L226 Difference]: Without dead ends: 107 [2021-10-11 02:24:50,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:24:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-11 02:24:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2021-10-11 02:24:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-10-11 02:24:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2021-10-11 02:24:50,448 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 9 [2021-10-11 02:24:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:50,448 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2021-10-11 02:24:50,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2021-10-11 02:24:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:50,453 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:50,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:50,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:50,454 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:50,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1687311595, now seen corresponding path program 1 times [2021-10-11 02:24:50,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:50,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233951132] [2021-10-11 02:24:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:50,553 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 02:24:50,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233951132] [2021-10-11 02:24:50,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:50,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:50,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508514042] [2021-10-11 02:24:50,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:50,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:50,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:50,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:50,555 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand 4 states. [2021-10-11 02:24:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:50,671 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2021-10-11 02:24:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:50,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:24:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:50,672 INFO L225 Difference]: With dead ends: 93 [2021-10-11 02:24:50,673 INFO L226 Difference]: Without dead ends: 91 [2021-10-11 02:24:50,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-11 02:24:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-10-11 02:24:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-10-11 02:24:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2021-10-11 02:24:50,709 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 9 [2021-10-11 02:24:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:50,709 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2021-10-11 02:24:50,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2021-10-11 02:24:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:50,711 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:50,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:50,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:50,712 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash 194418869, now seen corresponding path program 1 times [2021-10-11 02:24:50,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:50,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499426590] [2021-10-11 02:24:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:50,812 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 02:24:50,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499426590] [2021-10-11 02:24:50,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:50,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:50,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692772541] [2021-10-11 02:24:50,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:50,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:50,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:50,815 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand 5 states. [2021-10-11 02:24:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:50,977 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2021-10-11 02:24:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:24:50,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:24:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:50,983 INFO L225 Difference]: With dead ends: 91 [2021-10-11 02:24:50,983 INFO L226 Difference]: Without dead ends: 87 [2021-10-11 02:24:50,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:24:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-11 02:24:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-10-11 02:24:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-10-11 02:24:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-10-11 02:24:50,997 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 9 [2021-10-11 02:24:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:50,997 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-10-11 02:24:50,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-10-11 02:24:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:24:50,998 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:50,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:50,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:50,998 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:50,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:50,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1030181768, now seen corresponding path program 1 times [2021-10-11 02:24:50,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:50,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519150990] [2021-10-11 02:24:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:51,071 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 02:24:51,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519150990] [2021-10-11 02:24:51,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:51,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:24:51,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807642830] [2021-10-11 02:24:51,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:51,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:51,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:51,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:51,074 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand 6 states. [2021-10-11 02:24:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:51,289 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2021-10-11 02:24:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:24:51,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:24:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:51,294 INFO L225 Difference]: With dead ends: 143 [2021-10-11 02:24:51,294 INFO L226 Difference]: Without dead ends: 139 [2021-10-11 02:24:51,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-11 02:24:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 108. [2021-10-11 02:24:51,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-10-11 02:24:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2021-10-11 02:24:51,308 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 10 [2021-10-11 02:24:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:51,309 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2021-10-11 02:24:51,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2021-10-11 02:24:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:24:51,311 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:51,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:51,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:51,311 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:51,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1696156379, now seen corresponding path program 1 times [2021-10-11 02:24:51,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:51,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396054807] [2021-10-11 02:24:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:51,379 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 02:24:51,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396054807] [2021-10-11 02:24:51,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:51,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:51,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802312725] [2021-10-11 02:24:51,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:51,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:51,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:51,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:51,382 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand 5 states. [2021-10-11 02:24:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:51,585 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2021-10-11 02:24:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:51,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:24:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:51,587 INFO L225 Difference]: With dead ends: 190 [2021-10-11 02:24:51,588 INFO L226 Difference]: Without dead ends: 188 [2021-10-11 02:24:51,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-11 02:24:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 126. [2021-10-11 02:24:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-10-11 02:24:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2021-10-11 02:24:51,602 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 13 [2021-10-11 02:24:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:51,603 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2021-10-11 02:24:51,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2021-10-11 02:24:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:24:51,605 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:51,605 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:51,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:24:51,606 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:51,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:51,606 INFO L82 PathProgramCache]: Analyzing trace with hash -104579546, now seen corresponding path program 1 times [2021-10-11 02:24:51,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:51,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113012806] [2021-10-11 02:24:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:51,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113012806] [2021-10-11 02:24:51,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:51,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:24:51,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289795081] [2021-10-11 02:24:51,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:51,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:51,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:51,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:51,655 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand 6 states. [2021-10-11 02:24:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:51,821 INFO L93 Difference]: Finished difference Result 131 states and 161 transitions. [2021-10-11 02:24:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:24:51,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:24:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:51,823 INFO L225 Difference]: With dead ends: 131 [2021-10-11 02:24:51,823 INFO L226 Difference]: Without dead ends: 123 [2021-10-11 02:24:51,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:24:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-11 02:24:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 66. [2021-10-11 02:24:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-10-11 02:24:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2021-10-11 02:24:51,833 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 14 [2021-10-11 02:24:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:51,834 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2021-10-11 02:24:51,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2021-10-11 02:24:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:24:51,835 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:51,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:51,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:24:51,836 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:51,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2081133442, now seen corresponding path program 1 times [2021-10-11 02:24:51,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:51,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294870719] [2021-10-11 02:24:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:51,888 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 02:24:51,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294870719] [2021-10-11 02:24:51,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:51,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:24:51,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915118033] [2021-10-11 02:24:51,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:51,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:51,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:51,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:51,890 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 6 states. [2021-10-11 02:24:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:52,078 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2021-10-11 02:24:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:24:52,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:24:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:52,079 INFO L225 Difference]: With dead ends: 81 [2021-10-11 02:24:52,080 INFO L226 Difference]: Without dead ends: 79 [2021-10-11 02:24:52,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:24:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-11 02:24:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2021-10-11 02:24:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-10-11 02:24:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2021-10-11 02:24:52,090 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 15 [2021-10-11 02:24:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:52,090 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2021-10-11 02:24:52,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:52,090 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2021-10-11 02:24:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:24:52,091 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:52,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:52,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:24:52,092 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:52,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1525170515, now seen corresponding path program 1 times [2021-10-11 02:24:52,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:52,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872175113] [2021-10-11 02:24:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:52,164 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 02:24:52,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872175113] [2021-10-11 02:24:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:24:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801700958] [2021-10-11 02:24:52,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:24:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:24:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:52,167 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 7 states. [2021-10-11 02:24:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:52,527 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2021-10-11 02:24:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:52,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-10-11 02:24:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:52,529 INFO L225 Difference]: With dead ends: 113 [2021-10-11 02:24:52,529 INFO L226 Difference]: Without dead ends: 109 [2021-10-11 02:24:52,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:24:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-11 02:24:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 72. [2021-10-11 02:24:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-10-11 02:24:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-10-11 02:24:52,541 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 18 [2021-10-11 02:24:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:52,541 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-10-11 02:24:52,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:24:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-10-11 02:24:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:24:52,542 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:52,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:52,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:24:52,543 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash 109121670, now seen corresponding path program 1 times [2021-10-11 02:24:52,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:52,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444043782] [2021-10-11 02:24:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:52,588 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 02:24:52,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444043782] [2021-10-11 02:24:52,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:52,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:52,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533638030] [2021-10-11 02:24:52,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:52,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:52,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:52,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:52,590 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 5 states. [2021-10-11 02:24:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:52,807 INFO L93 Difference]: Finished difference Result 170 states and 193 transitions. [2021-10-11 02:24:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:52,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-10-11 02:24:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:52,809 INFO L225 Difference]: With dead ends: 170 [2021-10-11 02:24:52,809 INFO L226 Difference]: Without dead ends: 168 [2021-10-11 02:24:52,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-11 02:24:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 132. [2021-10-11 02:24:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-10-11 02:24:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2021-10-11 02:24:52,830 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 21 [2021-10-11 02:24:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:52,830 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2021-10-11 02:24:52,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2021-10-11 02:24:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 02:24:52,832 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:52,832 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:52,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:24:52,833 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:52,833 INFO L82 PathProgramCache]: Analyzing trace with hash -330925894, now seen corresponding path program 1 times [2021-10-11 02:24:52,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:52,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270301782] [2021-10-11 02:24:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:52,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270301782] [2021-10-11 02:24:52,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:52,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:24:52,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912238142] [2021-10-11 02:24:52,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:52,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:52,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:52,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:52,883 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2021-10-11 02:24:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:53,063 INFO L93 Difference]: Finished difference Result 176 states and 203 transitions. [2021-10-11 02:24:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:24:53,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-10-11 02:24:53,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:53,071 INFO L225 Difference]: With dead ends: 176 [2021-10-11 02:24:53,071 INFO L226 Difference]: Without dead ends: 174 [2021-10-11 02:24:53,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:24:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-11 02:24:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 72. [2021-10-11 02:24:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-10-11 02:24:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-10-11 02:24:53,083 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 28 [2021-10-11 02:24:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:53,084 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-10-11 02:24:53,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-10-11 02:24:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:24:53,087 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:53,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:53,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:24:53,088 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:53,089 INFO L82 PathProgramCache]: Analyzing trace with hash -570069709, now seen corresponding path program 1 times [2021-10-11 02:24:53,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:53,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671959242] [2021-10-11 02:24:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:53,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671959242] [2021-10-11 02:24:53,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309024591] [2021-10-11 02:24:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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 02:24:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:24:53,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:53,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:53,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:24:53,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2021-10-11 02:24:53,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109973870] [2021-10-11 02:24:53,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:53,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:53,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:53,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:53,562 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 5 states. [2021-10-11 02:24:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:53,687 INFO L93 Difference]: Finished difference Result 180 states and 201 transitions. [2021-10-11 02:24:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:53,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-10-11 02:24:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:53,689 INFO L225 Difference]: With dead ends: 180 [2021-10-11 02:24:53,689 INFO L226 Difference]: Without dead ends: 110 [2021-10-11 02:24:53,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-11 02:24:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2021-10-11 02:24:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-10-11 02:24:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2021-10-11 02:24:53,709 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 29 [2021-10-11 02:24:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:53,709 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2021-10-11 02:24:53,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2021-10-11 02:24:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 02:24:53,713 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:53,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:53,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-11 02:24:53,933 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:53,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1790606558, now seen corresponding path program 1 times [2021-10-11 02:24:53,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:53,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515765067] [2021-10-11 02:24:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:53,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515765067] [2021-10-11 02:24:53,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350417508] [2021-10-11 02:24:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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 02:24:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:54,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:24:54,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:54,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:54,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [360673067] [2021-10-11 02:24:54,352 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-10-11 02:24:54,352 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:24:54,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:24:54,364 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:24:54,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:24:55,214 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:24:55,483 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-10-11 02:24:55,713 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-10-11 02:24:56,035 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-10-11 02:24:56,451 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-10-11 02:24:56,669 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-10-11 02:24:56,820 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-10-11 02:24:57,420 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-10-11 02:24:57,587 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-10-11 02:24:57,871 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-10-11 02:24:58,020 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-10-11 02:24:58,206 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-10-11 02:24:58,365 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:24:58,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:24:58,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-10-11 02:24:58,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828038571] [2021-10-11 02:24:58,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:24:58,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:24:58,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2021-10-11 02:24:58,368 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 10 states. [2021-10-11 02:24:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:58,720 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2021-10-11 02:24:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:24:58,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2021-10-11 02:24:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:58,723 INFO L225 Difference]: With dead ends: 106 [2021-10-11 02:24:58,724 INFO L226 Difference]: Without dead ends: 104 [2021-10-11 02:24:58,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 79 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2021-10-11 02:24:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-11 02:24:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 80. [2021-10-11 02:24:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-10-11 02:24:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-10-11 02:24:58,756 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 37 [2021-10-11 02:24:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:58,756 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-10-11 02:24:58,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:24:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-10-11 02:24:58,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-11 02:24:58,758 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:58,758 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:58,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-11 02:24:58,978 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:58,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1401181834, now seen corresponding path program 1 times [2021-10-11 02:24:58,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:58,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643723736] [2021-10-11 02:24:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:24:59,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643723736] [2021-10-11 02:24:59,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478833835] [2021-10-11 02:24:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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 02:24:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:59,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:24:59,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 02:24:59,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:24:59,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:24:59,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2021-10-11 02:24:59,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167768536] [2021-10-11 02:24:59,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:59,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:59,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:59,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:59,307 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 6 states. [2021-10-11 02:24:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:59,493 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2021-10-11 02:24:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:59,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-10-11 02:24:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:59,494 INFO L225 Difference]: With dead ends: 95 [2021-10-11 02:24:59,494 INFO L226 Difference]: Without dead ends: 91 [2021-10-11 02:24:59,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:24:59,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-11 02:24:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2021-10-11 02:24:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:24:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-10-11 02:24:59,508 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 42 [2021-10-11 02:24:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:59,509 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-10-11 02:24:59,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-10-11 02:24:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-11 02:24:59,509 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:59,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:59,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-11 02:24:59,725 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:59,725 INFO L82 PathProgramCache]: Analyzing trace with hash -174223479, now seen corresponding path program 1 times [2021-10-11 02:24:59,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:59,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470210974] [2021-10-11 02:24:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:59,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470210974] [2021-10-11 02:24:59,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904008788] [2021-10-11 02:24:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/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 02:24:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:59,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:24:59,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:59,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:00,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:25:00,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 7] total 12 [2021-10-11 02:25:00,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314814475] [2021-10-11 02:25:00,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:25:00,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:00,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:25:00,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:25:00,045 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2021-10-11 02:25:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:00,228 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-10-11 02:25:00,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:25:00,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2021-10-11 02:25:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:00,229 INFO L225 Difference]: With dead ends: 116 [2021-10-11 02:25:00,229 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:00,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:25:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:00,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-10-11 02:25:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:00,230 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:00,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:25:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:00,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:00,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-11 02:25:00,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:01,370 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 29 [2021-10-11 02:25:01,497 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-10-11 02:25:01,700 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 31 [2021-10-11 02:25:01,852 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2021-10-11 02:25:02,096 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 26 [2021-10-11 02:25:02,259 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 31 [2021-10-11 02:25:02,494 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 31 [2021-10-11 02:25:02,616 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-10-11 02:25:02,910 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2021-10-11 02:25:03,040 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 30 [2021-10-11 02:25:03,315 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 29 [2021-10-11 02:25:03,450 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-10-11 02:25:03,601 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 31 [2021-10-11 02:25:03,737 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 30 [2021-10-11 02:25:04,112 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2021-10-11 02:25:04,114 INFO L258 CegarLoopResult]: At program point L18-17(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 1 ULTIMATE.start_main_~i~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,114 INFO L262 CegarLoopResult]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,115 INFO L258 CegarLoopResult]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (or (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,115 INFO L262 CegarLoopResult]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,115 INFO L258 CegarLoopResult]: At program point L18-23(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (or (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,115 INFO L262 CegarLoopResult]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,115 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,115 INFO L258 CegarLoopResult]: At program point L18-26(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (or (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,115 INFO L262 CegarLoopResult]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,115 INFO L258 CegarLoopResult]: At program point L18-29(lines 17 22) the Hoare annotation is: (let ((.cse6 (<= 2 ULTIMATE.start_main_~r~0)) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse2 (<= 1 ULTIMATE.start_main_~l~0)) (.cse3 (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0)) (.cse4 (<= 2 ULTIMATE.start_main_~j~0)) (.cse5 (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse7 (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0)) (.cse8 (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0)))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) .cse3 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~i~0) .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) ULTIMATE.start_main_~i~0) .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) .cse7 .cse8))) [2021-10-11 02:25:04,115 INFO L262 CegarLoopResult]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,115 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,116 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,116 INFO L258 CegarLoopResult]: At program point L18-32(lines 17 22) the Hoare annotation is: (and (<= 2 ULTIMATE.start_main_~l~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (or (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,116 INFO L262 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,116 INFO L262 CegarLoopResult]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,116 INFO L262 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,116 INFO L262 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,116 INFO L258 CegarLoopResult]: At program point L18-35(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~l~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (or (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,118 INFO L262 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,118 INFO L262 CegarLoopResult]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,118 INFO L262 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,118 INFO L262 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,118 INFO L258 CegarLoopResult]: At program point L18-38(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~l~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (or (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,118 INFO L262 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L258 CegarLoopResult]: At program point L18-41(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (or (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point L19-13(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L265 CegarLoopResult]: At program point L69(lines 24 70) the Hoare annotation is: true [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,119 INFO L258 CegarLoopResult]: At program point L38-2(lines 38 58) the Hoare annotation is: (let ((.cse10 (* 2 ULTIMATE.start_main_~l~0)) (.cse9 (* 2 ULTIMATE.start_main_~n~0))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~l~0)) (.cse2 (or (<= ULTIMATE.start_main_~l~0 1) (<= (+ ULTIMATE.start_main_~r~0 .cse10) .cse9))) (.cse4 (<= 2 ULTIMATE.start_main_~j~0)) (.cse3 (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse5 (<= 2 ULTIMATE.start_main_~r~0)) (.cse6 (<= .cse10 ULTIMATE.start_main_~n~0)) (.cse7 (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) ULTIMATE.start_main_~i~0)) (.cse8 (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ .cse9 ULTIMATE.start_main_~j~0)))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1 .cse2 .cse4 .cse3 .cse5 .cse6 .cse7 .cse8)))) [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point L38-3(lines 35 68) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point L39(lines 39 46) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 46) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point L59-1(lines 24 70) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,121 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,121 INFO L262 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2021-10-11 02:25:04,121 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:25:04,121 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,121 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,121 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,121 INFO L258 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,121 INFO L262 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,121 INFO L258 CegarLoopResult]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,121 INFO L262 CegarLoopResult]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,122 INFO L258 CegarLoopResult]: At program point L18-11(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,122 INFO L262 CegarLoopResult]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,122 INFO L258 CegarLoopResult]: At program point L18-14(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (<= 1 ULTIMATE.start_main_~i~0) (<= 2 ULTIMATE.start_main_~r~0) (<= (* 2 ULTIMATE.start_main_~l~0) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~i~0) 1) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~j~0))) [2021-10-11 02:25:04,122 INFO L262 CegarLoopResult]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:25:04,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:04 BoogieIcfgContainer [2021-10-11 02:25:04,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:04,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:04,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:04,153 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:04,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:48" (3/4) ... [2021-10-11 02:25:04,157 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:04,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-10-11 02:25:04,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:25:04,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:25:04,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:04,231 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8de44ef-3085-425f-a8b9-38bd86c0d7f0/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:04,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:04,232 INFO L168 Benchmark]: Toolchain (without parser) took 16212.90 ms. Allocated memory was 94.4 MB in the beginning and 237.0 MB in the end (delta: 142.6 MB). Free memory was 65.3 MB in the beginning and 77.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 133.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:04,233 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 66.5 MB in the end (delta: 47.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:04,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.89 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 54.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:04,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 53.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:04,234 INFO L168 Benchmark]: Boogie Preprocessor took 28.07 ms. Allocated memory is still 94.4 MB. Free memory was 53.0 MB in the beginning and 51.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:04,235 INFO L168 Benchmark]: RCFGBuilder took 518.96 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 51.5 MB in the beginning and 74.2 MB in the end (delta: -22.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:04,235 INFO L168 Benchmark]: TraceAbstraction took 15293.33 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 73.4 MB in the beginning and 81.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 125.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:04,235 INFO L168 Benchmark]: Witness Printer took 79.15 ms. Allocated memory is still 237.0 MB. Free memory was 81.6 MB in the beginning and 77.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:04,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 66.5 MB in the end (delta: 47.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.89 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 54.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 53.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.07 ms. Allocated memory is still 94.4 MB. Free memory was 53.0 MB in the beginning and 51.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 518.96 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 51.5 MB in the beginning and 74.2 MB in the end (delta: -22.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15293.33 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 73.4 MB in the beginning and 81.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 125.7 MB. Max. memory is 16.1 GB. * Witness Printer took 79.15 ms. Allocated memory is still 237.0 MB. Free memory was 81.6 MB in the beginning and 77.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 14 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((!(0 == cond) && 2 <= l) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && (j < r || 1 <= i)) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j + 1 <= n) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && j * -1 / -2 <= i) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j <= n) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && (j < r || 1 <= i)) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j + 1 <= n) && r <= n) && 2 <= j) && 2 <= r) && 2 * l <= n) && j * -1 / -2 <= i) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((2 <= l && 1 == cond) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && (j < r || 1 <= i)) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j <= n) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && (j < r || 1 <= i)) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((!(0 == cond) && 1 <= l) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && (j < r || 1 <= i)) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j + 1 <= n) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && j * -1 / -2 <= i) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((1 <= r && !(0 == cond)) && 1 <= l) && j <= n) && i + 1 <= n) && 2 <= j) && r <= n) && 1 <= i) && 2 <= r) && 2 * l <= n) && r + 2 * i + 1 <= 2 * n + j) || (((((((((1 <= r && !(0 == cond)) && 1 <= l) && i + 1 <= n) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && j * -1 / -2 <= i) && r + 2 * i + 1 <= 2 * n + j)) || ((((((((1 <= r && !(0 == cond)) && 1 <= l) && i + 1 <= n) && 2 <= j) && r <= n) && j < r) && 2 * l <= n) && r + 2 * i + 1 <= 2 * n + j) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j <= n) && 2 <= j) && r <= n) && 1 <= i) && 2 <= r) && 2 * l <= n) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= l && 1 == cond) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && (j < r || 1 <= i)) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j + 1 <= n) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && j * -1 / -2 <= i) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j <= n) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && (j < r || 1 <= i)) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((!(0 == cond) && 1 <= l) && i + 1 <= n) && j <= n) && 2 <= j) && r <= n) && 1 <= i) && 2 <= r) && 2 * l <= n) && r + 2 * i + 1 <= 2 * n + j - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((1 <= r && 1 <= l) && j <= n) && (l <= 1 || r + 2 * l <= 2 * n)) && r <= n) && 2 <= j) && 2 <= r) && 2 * l <= n) && j * -1 / -2 <= i) && r + 2 * i + 1 <= 2 * n + j) || (((((((((1 <= r && !(0 == cond)) && 1 <= l) && (l <= 1 || r + 2 * l <= 2 * n)) && 2 <= j) && r <= n) && 2 <= r) && 2 * l <= n) && j * -1 / -2 <= i) && r + 2 * i + 1 <= 2 * n + j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.5s, OverallIterations: 17, TraceHistogramMax: 2, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 767 SDtfs, 1505 SDslu, 866 SDs, 0 SdLazy, 1423 SolverSat, 697 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 499 GetRequests, 334 SyntacticMatches, 8 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 474 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 62 NumberOfFragments, 858 HoareAnnotationTreeSize, 16 FomulaSimplifications, 1201729 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 16 FomulaSimplificationsInter, 818537 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 58049 SizeOfPredicates, 30 NumberOfNonLiveVariables, 546 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 25 InterpolantComputations, 16 PerfectInterpolantSequences, 85/151 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 correct! Received shutdown request...