./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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 ca099a0a865236295bec7881986648360a2333c3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:27:49,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:49,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:50,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:50,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:50,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:50,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:50,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:50,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:50,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:50,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:50,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:50,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:50,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:50,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:50,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:50,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:50,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:50,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:50,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:50,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:50,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:50,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:50,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:50,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:50,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:50,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:50,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:50,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:50,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:50,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:50,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:50,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:50,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:50,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:50,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:50,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:50,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:50,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:50,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:50,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:50,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:50,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:50,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:50,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:50,138 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:50,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:50,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:50,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:50,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:50,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:50,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:50,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:50,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:50,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:50,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:50,142 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:50,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:50,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:50,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:50,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:50,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:50,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:50,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:50,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:50,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:50,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:50,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:50,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:50,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:50,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:50,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:50,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:50,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:50,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:50,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:50,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:50,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:50,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:50,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:50,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:50,150 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_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca099a0a865236295bec7881986648360a2333c3 [2021-10-11 02:27:50,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:50,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:50,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:50,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:50,507 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:50,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label42.c [2021-10-11 02:27:50,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/data/b6b1c3193/93266979566c44f58b4986fc1a46b900/FLAGc7d28f644 [2021-10-11 02:27:51,137 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:51,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/sv-benchmarks/c/eca-rers2012/Problem01_label42.c [2021-10-11 02:27:51,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/data/b6b1c3193/93266979566c44f58b4986fc1a46b900/FLAGc7d28f644 [2021-10-11 02:27:51,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/data/b6b1c3193/93266979566c44f58b4986fc1a46b900 [2021-10-11 02:27:51,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:51,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:51,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:51,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:51,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:51,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8d96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51, skipping insertion in model container [2021-10-11 02:27:51,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:51,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:52,001 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_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/sv-benchmarks/c/eca-rers2012/Problem01_label42.c[19849,19862] [2021-10-11 02:27:52,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:52,041 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:52,155 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_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/sv-benchmarks/c/eca-rers2012/Problem01_label42.c[19849,19862] [2021-10-11 02:27:52,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:52,203 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:52,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52 WrapperNode [2021-10-11 02:27:52,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:52,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:52,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:52,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:52,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:52,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:52,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:52,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:52,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:52,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:52,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:52,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:52,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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 02:27:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:52,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:54,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:54,819 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:27:54,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:54 BoogieIcfgContainer [2021-10-11 02:27:54,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:54,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:54,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:54,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:54,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:51" (1/3) ... [2021-10-11 02:27:54,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b762593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:54, skipping insertion in model container [2021-10-11 02:27:54,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (2/3) ... [2021-10-11 02:27:54,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b762593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:54, skipping insertion in model container [2021-10-11 02:27:54,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:54" (3/3) ... [2021-10-11 02:27:54,832 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2021-10-11 02:27:54,842 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:54,846 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:54,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:54,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:54,881 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:54,882 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:54,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:54,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:54,882 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:54,882 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:54,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:27:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:27:54,905 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:54,906 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, 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, 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 02:27:54,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:54,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1806908248, now seen corresponding path program 1 times [2021-10-11 02:27:54,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:54,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575197473] [2021-10-11 02:27:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:55,510 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 02:27:55,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575197473] [2021-10-11 02:27:55,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:55,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:55,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319490094] [2021-10-11 02:27:55,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:55,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:55,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:55,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:55,537 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:27:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:56,378 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:27:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:56,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:27:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:56,404 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:27:56,406 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:27:56,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:27:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:27:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:27:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:27:56,489 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:27:56,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:56,490 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:27:56,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:27:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:27:56,505 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:56,505 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:56,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:56,506 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:56,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1703773383, now seen corresponding path program 1 times [2021-10-11 02:27:56,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:56,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086208947] [2021-10-11 02:27:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:56,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086208947] [2021-10-11 02:27:56,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:56,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:56,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711507787] [2021-10-11 02:27:56,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:56,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:56,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:56,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:56,820 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:27:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,550 INFO L93 Difference]: Finished difference Result 571 states and 986 transitions. [2021-10-11 02:27:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:57,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:27:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,556 INFO L225 Difference]: With dead ends: 571 [2021-10-11 02:27:57,556 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:27:57,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:57,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:27:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2021-10-11 02:27:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:27:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:27:57,584 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:27:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,587 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:27:57,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:27:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:27:57,591 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:57,591 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,592 INFO L82 PathProgramCache]: Analyzing trace with hash 350103159, now seen corresponding path program 1 times [2021-10-11 02:27:57,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:57,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675198655] [2021-10-11 02:27:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,663 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 02:27:57,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675198655] [2021-10-11 02:27:57,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:57,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:57,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632301602] [2021-10-11 02:27:57,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:57,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:57,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:57,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:57,669 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:27:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:58,157 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:27:58,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:58,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:27:58,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:58,160 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:27:58,160 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:27:58,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:27:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:27:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:27:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2021-10-11 02:27:58,204 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2021-10-11 02:27:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:58,205 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2021-10-11 02:27:58,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2021-10-11 02:27:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:27:58,207 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:58,207 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:58,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:58,207 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:58,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1470701861, now seen corresponding path program 1 times [2021-10-11 02:27:58,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:58,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046206345] [2021-10-11 02:27:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:27:58,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046206345] [2021-10-11 02:27:58,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:58,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:58,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296918388] [2021-10-11 02:27:58,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:58,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:58,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:58,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:58,306 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2021-10-11 02:27:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:58,679 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2021-10-11 02:27:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:58,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:27:58,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:58,684 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:27:58,684 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:27:58,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:27:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:27:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:27:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 780 transitions. [2021-10-11 02:27:58,707 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 780 transitions. Word has length 95 [2021-10-11 02:27:58,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:58,708 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 780 transitions. [2021-10-11 02:27:58,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:58,708 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 780 transitions. [2021-10-11 02:27:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-11 02:27:58,710 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:58,710 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:58,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:58,711 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:58,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1745915978, now seen corresponding path program 1 times [2021-10-11 02:27:58,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:58,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870618425] [2021-10-11 02:27:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:58,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870618425] [2021-10-11 02:27:58,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:58,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:58,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542208731] [2021-10-11 02:27:58,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:58,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:58,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:58,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:58,796 INFO L87 Difference]: Start difference. First operand 571 states and 780 transitions. Second operand 4 states. [2021-10-11 02:27:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:59,336 INFO L93 Difference]: Finished difference Result 1496 states and 2088 transitions. [2021-10-11 02:27:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:59,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2021-10-11 02:27:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:59,343 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:27:59,343 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:27:59,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:27:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2021-10-11 02:27:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:27:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 958 transitions. [2021-10-11 02:27:59,369 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 958 transitions. Word has length 101 [2021-10-11 02:27:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:59,369 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 958 transitions. [2021-10-11 02:27:59,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 958 transitions. [2021-10-11 02:27:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-11 02:27:59,371 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:59,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:59,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:59,372 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -656956851, now seen corresponding path program 1 times [2021-10-11 02:27:59,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:59,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276552290] [2021-10-11 02:27:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:27:59,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276552290] [2021-10-11 02:27:59,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:59,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:59,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095270899] [2021-10-11 02:27:59,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:59,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:59,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:59,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:59,458 INFO L87 Difference]: Start difference. First operand 713 states and 958 transitions. Second operand 4 states. [2021-10-11 02:27:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:59,965 INFO L93 Difference]: Finished difference Result 1638 states and 2178 transitions. [2021-10-11 02:27:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:59,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2021-10-11 02:27:59,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:59,976 INFO L225 Difference]: With dead ends: 1638 [2021-10-11 02:27:59,976 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:27:59,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:28:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-11 02:28:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:28:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1123 transitions. [2021-10-11 02:28:00,004 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1123 transitions. Word has length 115 [2021-10-11 02:28:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:00,006 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1123 transitions. [2021-10-11 02:28:00,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1123 transitions. [2021-10-11 02:28:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-11 02:28:00,009 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:00,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:00,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:28:00,010 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:00,011 INFO L82 PathProgramCache]: Analyzing trace with hash 905969960, now seen corresponding path program 1 times [2021-10-11 02:28:00,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:00,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513504722] [2021-10-11 02:28:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:28:00,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513504722] [2021-10-11 02:28:00,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:00,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:00,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980925878] [2021-10-11 02:28:00,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:00,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:00,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:00,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:00,161 INFO L87 Difference]: Start difference. First operand 855 states and 1123 transitions. Second operand 3 states. [2021-10-11 02:28:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:00,508 INFO L93 Difference]: Finished difference Result 1922 states and 2496 transitions. [2021-10-11 02:28:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:00,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2021-10-11 02:28:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:00,515 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:28:00,515 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:28:00,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:28:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-10-11 02:28:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:28:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1209 transitions. [2021-10-11 02:28:00,543 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1209 transitions. Word has length 132 [2021-10-11 02:28:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:00,543 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1209 transitions. [2021-10-11 02:28:00,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1209 transitions. [2021-10-11 02:28:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-11 02:28:00,547 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:00,547 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2021-10-11 02:28:00,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:28:00,548 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:00,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1229741418, now seen corresponding path program 1 times [2021-10-11 02:28:00,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:00,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182143479] [2021-10-11 02:28:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182143479] [2021-10-11 02:28:00,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850931489] [2021-10-11 02:28:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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 02:28:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:01,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:01,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-11 02:28:01,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-11 02:28:01,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:01,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:28:01,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583252834] [2021-10-11 02:28:01,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:01,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:01,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:01,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:01,774 INFO L87 Difference]: Start difference. First operand 926 states and 1209 transitions. Second operand 3 states. [2021-10-11 02:28:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:02,122 INFO L93 Difference]: Finished difference Result 1851 states and 2417 transitions. [2021-10-11 02:28:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:02,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2021-10-11 02:28:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:02,128 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:28:02,128 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:28:02,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:28:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2021-10-11 02:28:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:28:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 868 transitions. [2021-10-11 02:28:02,150 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 868 transitions. Word has length 175 [2021-10-11 02:28:02,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:02,151 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 868 transitions. [2021-10-11 02:28:02,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 868 transitions. [2021-10-11 02:28:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-11 02:28:02,154 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:02,154 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:02,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 02:28:02,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:02,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1422758198, now seen corresponding path program 1 times [2021-10-11 02:28:02,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:02,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571914023] [2021-10-11 02:28:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:28:02,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571914023] [2021-10-11 02:28:02,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:02,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:02,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525491752] [2021-10-11 02:28:02,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:02,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:02,477 INFO L87 Difference]: Start difference. First operand 713 states and 868 transitions. Second operand 3 states. [2021-10-11 02:28:02,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:02,787 INFO L93 Difference]: Finished difference Result 1709 states and 2079 transitions. [2021-10-11 02:28:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:02,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2021-10-11 02:28:02,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:02,793 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:28:02,793 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:28:02,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:28:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:28:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:28:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1113 transitions. [2021-10-11 02:28:02,851 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1113 transitions. Word has length 175 [2021-10-11 02:28:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:02,851 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1113 transitions. [2021-10-11 02:28:02,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1113 transitions. [2021-10-11 02:28:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-10-11 02:28:02,855 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:02,855 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-10-11 02:28:02,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:28:02,855 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:02,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1489448393, now seen corresponding path program 1 times [2021-10-11 02:28:02,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:02,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099743629] [2021-10-11 02:28:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 159 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:28:03,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099743629] [2021-10-11 02:28:03,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072222374] [2021-10-11 02:28:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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 02:28:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:03,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:03,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-11 02:28:03,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-11 02:28:03,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:03,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:28:03,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924322300] [2021-10-11 02:28:03,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:03,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:03,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:03,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:03,605 INFO L87 Difference]: Start difference. First operand 926 states and 1113 transitions. Second operand 3 states. [2021-10-11 02:28:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:03,947 INFO L93 Difference]: Finished difference Result 2135 states and 2551 transitions. [2021-10-11 02:28:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:03,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2021-10-11 02:28:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:03,954 INFO L225 Difference]: With dead ends: 2135 [2021-10-11 02:28:03,955 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:28:03,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:28:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:28:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:28:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1279 transitions. [2021-10-11 02:28:03,993 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1279 transitions. Word has length 188 [2021-10-11 02:28:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:03,994 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1279 transitions. [2021-10-11 02:28:03,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1279 transitions. [2021-10-11 02:28:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-10-11 02:28:03,998 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:03,999 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-10-11 02:28:04,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:28:04,225 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash 922667617, now seen corresponding path program 1 times [2021-10-11 02:28:04,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:04,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578564383] [2021-10-11 02:28:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:28:04,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578564383] [2021-10-11 02:28:04,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355500172] [2021-10-11 02:28:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/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 02:28:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:04,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:28:04,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:28:04,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:04,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:28:04,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845937478] [2021-10-11 02:28:04,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:04,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:04,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:04,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:04,968 INFO L87 Difference]: Start difference. First operand 1068 states and 1279 transitions. Second operand 3 states. [2021-10-11 02:28:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:05,271 INFO L93 Difference]: Finished difference Result 2133 states and 2556 transitions. [2021-10-11 02:28:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:05,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2021-10-11 02:28:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:05,272 INFO L225 Difference]: With dead ends: 2133 [2021-10-11 02:28:05,272 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:05,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:05,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 197 [2021-10-11 02:28:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:05,276 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:05,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:05,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:05,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:28:05,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:05,829 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-10-11 02:28:06,035 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-10-11 02:28:06,038 INFO L262 CegarLoopResult]: For program point L531(line 531) no Hoare annotation was computed. [2021-10-11 02:28:06,038 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:28:06,038 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:28:06,038 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:28:06,039 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:28:06,040 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:28:06,041 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:28:06,042 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:28:06,042 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:06,042 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:28:06,042 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:28:06,042 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:28:06,043 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse8 (= ~a8~0 13))) (let ((.cse1 (<= ~a21~0 0)) (.cse6 (= ~a21~0 1)) (.cse7 (= ~a12~0 8)) (.cse9 (= ~a20~0 1)) (.cse4 (not (= ~a7~0 1))) (.cse2 (= ~a17~0 1)) (.cse0 (<= ~a16~0 5)) (.cse5 (not .cse8)) (.cse3 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse3 .cse5 .cse4) (and .cse3 .cse1) (and .cse0 .cse5 .cse4 .cse2) (and .cse6 .cse7 .cse8 .cse9 (= ~a16~0 4) .cse2) (and .cse6 .cse7 .cse9 .cse4 .cse2) (and (= ~a16~0 6) .cse5 .cse4 .cse2) (and .cse0 .cse5 .cse3)))) [2021-10-11 02:28:06,043 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:28:06,043 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:28:06,043 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:28:06,043 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:28:06,043 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:28:06,043 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:28:06,044 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:28:06,044 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:06,044 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:28:06,044 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:28:06,044 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:28:06,044 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:28:06,044 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:28:06,045 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:28:06,046 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:28:06,046 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:28:06,046 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse8 (= ~a8~0 13))) (let ((.cse1 (<= ~a21~0 0)) (.cse6 (= ~a21~0 1)) (.cse7 (= ~a12~0 8)) (.cse9 (= ~a20~0 1)) (.cse4 (not (= ~a7~0 1))) (.cse2 (= ~a17~0 1)) (.cse0 (<= ~a16~0 5)) (.cse5 (not .cse8)) (.cse3 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse3 .cse5 .cse4) (and .cse3 .cse1) (and .cse0 .cse5 .cse4 .cse2) (and .cse6 .cse7 .cse8 .cse9 (= ~a16~0 4) .cse2) (and .cse6 .cse7 .cse9 .cse4 .cse2) (and (= ~a16~0 6) .cse5 .cse4 .cse2) (and .cse0 .cse5 .cse3)))) [2021-10-11 02:28:06,046 INFO L262 CegarLoopResult]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:28:06,046 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:28:06,046 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 531) no Hoare annotation was computed. [2021-10-11 02:28:06,046 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:28:06,046 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:28:06,047 INFO L262 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:28:06,047 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:28:06,047 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:28:06,047 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:28:06,047 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:28:06,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:06 BoogieIcfgContainer [2021-10-11 02:28:06,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:06,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:06,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:06,068 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:06,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:54" (3/4) ... [2021-10-11 02:28:06,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:06,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:28:06,098 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:28:06,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:28:06,101 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:28:06,265 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2ee3f3-1b46-447a-b0cf-980b2fdcc313/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:06,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:06,266 INFO L168 Benchmark]: Toolchain (without parser) took 14844.53 ms. Allocated memory was 98.6 MB in the beginning and 360.7 MB in the end (delta: 262.1 MB). Free memory was 58.1 MB in the beginning and 290.2 MB in the end (delta: -232.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:06,267 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 76.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:06,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.56 ms. Allocated memory is still 98.6 MB. Free memory was 57.9 MB in the beginning and 58.1 MB in the end (delta: -251.0 kB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:06,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.65 ms. Allocated memory is still 98.6 MB. Free memory was 58.1 MB in the beginning and 52.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:06,268 INFO L168 Benchmark]: Boogie Preprocessor took 85.63 ms. Allocated memory is still 98.6 MB. Free memory was 52.4 MB in the beginning and 47.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:06,269 INFO L168 Benchmark]: RCFGBuilder took 2432.16 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 47.7 MB in the beginning and 54.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:06,269 INFO L168 Benchmark]: TraceAbstraction took 11242.10 ms. Allocated memory was 144.7 MB in the beginning and 360.7 MB in the end (delta: 216.0 MB). Free memory was 54.3 MB in the beginning and 306.0 MB in the end (delta: -251.7 MB). Peak memory consumption was 158.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:06,270 INFO L168 Benchmark]: Witness Printer took 197.44 ms. Allocated memory is still 360.7 MB. Free memory was 306.0 MB in the beginning and 290.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:06,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 76.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 766.56 ms. Allocated memory is still 98.6 MB. Free memory was 57.9 MB in the beginning and 58.1 MB in the end (delta: -251.0 kB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.65 ms. Allocated memory is still 98.6 MB. Free memory was 58.1 MB in the beginning and 52.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.63 ms. Allocated memory is still 98.6 MB. Free memory was 52.4 MB in the beginning and 47.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2432.16 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 47.7 MB in the beginning and 54.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11242.10 ms. Allocated memory was 144.7 MB in the beginning and 360.7 MB in the end (delta: 216.0 MB). Free memory was 54.3 MB in the beginning and 306.0 MB in the end (delta: -251.7 MB). Peak memory consumption was 158.3 MB. Max. memory is 16.1 GB. * Witness Printer took 197.44 ms. Allocated memory is still 360.7 MB. Free memory was 306.0 MB in the beginning and 290.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 531]: 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 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a16 <= 5 && a17 <= 0) && !(a7 == 1))) || ((a17 <= 0 && !(a8 == 13)) && !(a7 == 1))) || (a17 <= 0 && a21 <= 0)) || (((a16 <= 5 && !(a8 == 13)) && !(a7 == 1)) && a17 == 1)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && !(a8 == 13)) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && !(a8 == 13)) && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a16 <= 5 && a17 <= 0) && !(a7 == 1))) || ((a17 <= 0 && !(a8 == 13)) && !(a7 == 1))) || (a17 <= 0 && a21 <= 0)) || (((a16 <= 5 && !(a8 == 13)) && !(a7 == 1)) && a17 == 1)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && !(a8 == 13)) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && !(a8 == 13)) && a17 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 559 SDtfs, 1020 SDslu, 58 SDs, 0 SdLazy, 2701 SolverSat, 760 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1154 GetRequests, 1125 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1065 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 237 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4726 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 634 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1973 NumberOfCodeBlocks, 1973 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2516 ConstructedInterpolants, 0 QuantifiedInterpolants, 1692432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1294 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 2024/2218 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...