./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label43.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_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/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_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label43.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/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_541a9e45-8bde-46b7-95b4-1d0b7822efbf/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 454dd493ee9dcdf0cdb95ddac4747f0f0acba84f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:26:25,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:25,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:25,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:25,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:25,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:25,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:25,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:25,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:25,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:25,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:25,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:25,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:25,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:25,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:25,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:25,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:25,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:25,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:25,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:25,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:25,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:25,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:25,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:25,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:25,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:25,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:25,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:25,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:25,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:25,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:25,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:25,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:25,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:25,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:25,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:25,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:25,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:25,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:25,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:25,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:25,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:25,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:25,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:25,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:25,168 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:25,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:25,168 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:25,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:25,169 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:25,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:25,169 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:25,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:25,171 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:25,171 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:25,171 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:25,172 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:25,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:25,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:25,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:25,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:25,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:25,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:25,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:25,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:25,175 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:25,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:25,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:25,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:25,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:25,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:25,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:25,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:25,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:25,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:25,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:25,180 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:25,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:25,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:25,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:25,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:25,181 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_541a9e45-8bde-46b7-95b4-1d0b7822efbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 454dd493ee9dcdf0cdb95ddac4747f0f0acba84f [2021-10-11 02:26:25,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:25,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:25,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:25,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:25,556 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:25,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label43.c [2021-10-11 02:26:25,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/data/e171b9737/7847acb14cf6437b8ab750527a527c53/FLAGd9ed0bd94 [2021-10-11 02:26:26,376 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:26,377 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/sv-benchmarks/c/eca-rers2012/Problem01_label43.c [2021-10-11 02:26:26,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/data/e171b9737/7847acb14cf6437b8ab750527a527c53/FLAGd9ed0bd94 [2021-10-11 02:26:26,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/data/e171b9737/7847acb14cf6437b8ab750527a527c53 [2021-10-11 02:26:26,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:26,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:26,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:26,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:26,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:26,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aff05bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26, skipping insertion in model container [2021-10-11 02:26:26,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:26,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:27,119 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_541a9e45-8bde-46b7-95b4-1d0b7822efbf/sv-benchmarks/c/eca-rers2012/Problem01_label43.c[21463,21476] [2021-10-11 02:26:27,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:27,177 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:27,283 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_541a9e45-8bde-46b7-95b4-1d0b7822efbf/sv-benchmarks/c/eca-rers2012/Problem01_label43.c[21463,21476] [2021-10-11 02:26:27,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:27,325 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:27,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27 WrapperNode [2021-10-11 02:26:27,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:27,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:27,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:27,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:27,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:27,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:27,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:27,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:27,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:27,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:27,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:27,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:27,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/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 02:26:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:30,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:30,300 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:26:30,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:30 BoogieIcfgContainer [2021-10-11 02:26:30,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:30,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:30,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:30,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:30,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:26" (1/3) ... [2021-10-11 02:26:30,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4124063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:30, skipping insertion in model container [2021-10-11 02:26:30,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (2/3) ... [2021-10-11 02:26:30,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4124063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:30, skipping insertion in model container [2021-10-11 02:26:30,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:30" (3/3) ... [2021-10-11 02:26:30,321 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2021-10-11 02:26:30,337 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:30,341 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:30,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:30,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:30,398 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:30,399 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:30,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:30,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:30,399 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:30,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:30,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:26:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:26:30,430 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:30,431 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 02:26:30,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:30,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1806904920, now seen corresponding path program 1 times [2021-10-11 02:26:30,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:30,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498806223] [2021-10-11 02:26:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:30,917 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 02:26:30,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498806223] [2021-10-11 02:26:30,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:30,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:30,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250475598] [2021-10-11 02:26:30,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:30,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:30,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:30,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:30,943 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:26:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:31,552 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:26:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:31,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:26:31,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:31,573 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:26:31,587 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:26:31,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:26:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:26:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:26:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:26:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-10-11 02:26:31,687 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-10-11 02:26:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:31,688 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-10-11 02:26:31,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-10-11 02:26:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:26:31,696 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:31,696 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-10-11 02:26:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:31,697 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:31,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:31,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1694603326, now seen corresponding path program 1 times [2021-10-11 02:26:31,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:31,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818254420] [2021-10-11 02:26:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:31,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818254420] [2021-10-11 02:26:31,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:31,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:31,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590927315] [2021-10-11 02:26:31,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:31,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:31,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:31,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:31,861 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand 3 states. [2021-10-11 02:26:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:32,428 INFO L93 Difference]: Finished difference Result 433 states and 811 transitions. [2021-10-11 02:26:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:32,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:26:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:32,437 INFO L225 Difference]: With dead ends: 433 [2021-10-11 02:26:32,437 INFO L226 Difference]: Without dead ends: 289 [2021-10-11 02:26:32,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:26:32,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-11 02:26:32,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2021-10-11 02:26:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:26:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-10-11 02:26:32,478 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-10-11 02:26:32,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:32,478 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-10-11 02:26:32,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:32,479 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-10-11 02:26:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:26:32,489 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:32,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 02:26:32,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:32,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:32,491 INFO L82 PathProgramCache]: Analyzing trace with hash -143895475, now seen corresponding path program 1 times [2021-10-11 02:26:32,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:32,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383269532] [2021-10-11 02:26:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:32,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383269532] [2021-10-11 02:26:32,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:32,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:32,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723280976] [2021-10-11 02:26:32,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:32,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:32,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:32,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:32,674 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 4 states. [2021-10-11 02:26:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:33,489 INFO L93 Difference]: Finished difference Result 999 states and 1753 transitions. [2021-10-11 02:26:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:33,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:26:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:33,495 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:26:33,495 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:26:33,499 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 02:26:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:26:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-10-11 02:26:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:26:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1106 transitions. [2021-10-11 02:26:33,546 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1106 transitions. Word has length 83 [2021-10-11 02:26:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:33,546 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1106 transitions. [2021-10-11 02:26:33,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1106 transitions. [2021-10-11 02:26:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:26:33,551 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:33,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:33,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:33,552 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:33,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1140297691, now seen corresponding path program 1 times [2021-10-11 02:26:33,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:33,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952344347] [2021-10-11 02:26:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:33,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952344347] [2021-10-11 02:26:33,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:33,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:33,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530216946] [2021-10-11 02:26:33,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:33,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:33,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:33,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:33,663 INFO L87 Difference]: Start difference. First operand 713 states and 1106 transitions. Second operand 3 states. [2021-10-11 02:26:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:34,189 INFO L93 Difference]: Finished difference Result 1780 states and 2693 transitions. [2021-10-11 02:26:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:34,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:26:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:34,196 INFO L225 Difference]: With dead ends: 1780 [2021-10-11 02:26:34,196 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:26:34,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:26:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:26:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-10-11 02:26:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:26:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1361 transitions. [2021-10-11 02:26:34,228 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1361 transitions. Word has length 86 [2021-10-11 02:26:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:34,229 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1361 transitions. [2021-10-11 02:26:34,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1361 transitions. [2021-10-11 02:26:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-11 02:26:34,231 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:34,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 02:26:34,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:34,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:34,233 INFO L82 PathProgramCache]: Analyzing trace with hash -886279657, now seen corresponding path program 1 times [2021-10-11 02:26:34,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:34,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903286409] [2021-10-11 02:26:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:26:34,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903286409] [2021-10-11 02:26:34,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:34,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:34,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396897844] [2021-10-11 02:26:34,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:34,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:34,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:34,316 INFO L87 Difference]: Start difference. First operand 926 states and 1361 transitions. Second operand 3 states. [2021-10-11 02:26:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:34,885 INFO L93 Difference]: Finished difference Result 2206 states and 3300 transitions. [2021-10-11 02:26:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:34,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2021-10-11 02:26:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:34,895 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:26:34,895 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:26:34,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:26:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:26:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:26:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:26:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1378 transitions. [2021-10-11 02:26:34,948 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1378 transitions. Word has length 87 [2021-10-11 02:26:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:34,950 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1378 transitions. [2021-10-11 02:26:34,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1378 transitions. [2021-10-11 02:26:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:26:34,958 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:34,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1] [2021-10-11 02:26:34,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:34,959 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2120220623, now seen corresponding path program 1 times [2021-10-11 02:26:34,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:34,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778768705] [2021-10-11 02:26:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:26:35,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778768705] [2021-10-11 02:26:35,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:35,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:35,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004894302] [2021-10-11 02:26:35,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:35,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:35,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:35,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:35,074 INFO L87 Difference]: Start difference. First operand 1068 states and 1378 transitions. Second operand 4 states. [2021-10-11 02:26:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:35,642 INFO L93 Difference]: Finished difference Result 2206 states and 2841 transitions. [2021-10-11 02:26:35,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:35,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2021-10-11 02:26:35,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:35,653 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:26:35,654 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:26:35,655 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 02:26:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:26:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-10-11 02:26:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:26:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1394 transitions. [2021-10-11 02:26:35,689 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1394 transitions. Word has length 91 [2021-10-11 02:26:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:35,689 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1394 transitions. [2021-10-11 02:26:35,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1394 transitions. [2021-10-11 02:26:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-11 02:26:35,693 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:35,693 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1] [2021-10-11 02:26:35,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:35,693 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1622640199, now seen corresponding path program 1 times [2021-10-11 02:26:35,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:35,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201459125] [2021-10-11 02:26:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-11 02:26:35,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201459125] [2021-10-11 02:26:35,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:35,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:35,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241612320] [2021-10-11 02:26:35,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:35,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:35,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:35,784 INFO L87 Difference]: Start difference. First operand 1139 states and 1394 transitions. Second operand 4 states. [2021-10-11 02:26:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:36,332 INFO L93 Difference]: Finished difference Result 2277 states and 2787 transitions. [2021-10-11 02:26:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:36,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2021-10-11 02:26:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:36,341 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:26:36,341 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:26:36,344 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 02:26:36,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:26:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-10-11 02:26:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:26:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1373 transitions. [2021-10-11 02:26:36,379 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1373 transitions. Word has length 120 [2021-10-11 02:26:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:36,379 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1373 transitions. [2021-10-11 02:26:36,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1373 transitions. [2021-10-11 02:26:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-11 02:26:36,385 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:36,385 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1] [2021-10-11 02:26:36,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:36,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:36,386 INFO L82 PathProgramCache]: Analyzing trace with hash 408955838, now seen corresponding path program 1 times [2021-10-11 02:26:36,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:36,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857001021] [2021-10-11 02:26:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:26:36,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857001021] [2021-10-11 02:26:36,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:36,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:36,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589478823] [2021-10-11 02:26:36,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:36,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:36,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:36,529 INFO L87 Difference]: Start difference. First operand 1139 states and 1373 transitions. Second operand 3 states. [2021-10-11 02:26:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:36,947 INFO L93 Difference]: Finished difference Result 2561 states and 3091 transitions. [2021-10-11 02:26:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:36,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2021-10-11 02:26:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:36,959 INFO L225 Difference]: With dead ends: 2561 [2021-10-11 02:26:36,960 INFO L226 Difference]: Without dead ends: 1423 [2021-10-11 02:26:36,964 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 02:26:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2021-10-11 02:26:37,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1210. [2021-10-11 02:26:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:26:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1460 transitions. [2021-10-11 02:26:37,007 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1460 transitions. Word has length 137 [2021-10-11 02:26:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:37,008 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1460 transitions. [2021-10-11 02:26:37,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1460 transitions. [2021-10-11 02:26:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-11 02:26:37,011 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:37,012 INFO L422 BasicCegarLoop]: trace histogram [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, 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 02:26:37,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:37,014 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash 729574607, now seen corresponding path program 1 times [2021-10-11 02:26:37,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:37,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386021217] [2021-10-11 02:26:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:37,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386021217] [2021-10-11 02:26:37,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:37,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:37,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267786508] [2021-10-11 02:26:37,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:37,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:37,302 INFO L87 Difference]: Start difference. First operand 1210 states and 1460 transitions. Second operand 5 states. [2021-10-11 02:26:37,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:37,904 INFO L93 Difference]: Finished difference Result 2670 states and 3189 transitions. [2021-10-11 02:26:37,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:37,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2021-10-11 02:26:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:37,916 INFO L225 Difference]: With dead ends: 2670 [2021-10-11 02:26:37,916 INFO L226 Difference]: Without dead ends: 1461 [2021-10-11 02:26:37,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-10-11 02:26:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1352. [2021-10-11 02:26:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:26:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1574 transitions. [2021-10-11 02:26:37,967 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1574 transitions. Word has length 155 [2021-10-11 02:26:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:37,969 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1574 transitions. [2021-10-11 02:26:37,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1574 transitions. [2021-10-11 02:26:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-10-11 02:26:37,975 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:37,976 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, 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 02:26:37,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:37,976 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:37,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1322163890, now seen corresponding path program 1 times [2021-10-11 02:26:37,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:37,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448602335] [2021-10-11 02:26:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:26:38,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448602335] [2021-10-11 02:26:38,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:38,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813571294] [2021-10-11 02:26:38,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:38,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:38,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:38,186 INFO L87 Difference]: Start difference. First operand 1352 states and 1574 transitions. Second operand 3 states. [2021-10-11 02:26:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,646 INFO L93 Difference]: Finished difference Result 2845 states and 3357 transitions. [2021-10-11 02:26:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:38,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2021-10-11 02:26:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,656 INFO L225 Difference]: With dead ends: 2845 [2021-10-11 02:26:38,657 INFO L226 Difference]: Without dead ends: 1494 [2021-10-11 02:26:38,659 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 02:26:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-11 02:26:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2021-10-11 02:26:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2021-10-11 02:26:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1738 transitions. [2021-10-11 02:26:38,708 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1738 transitions. Word has length 168 [2021-10-11 02:26:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,709 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1738 transitions. [2021-10-11 02:26:38,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1738 transitions. [2021-10-11 02:26:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-11 02:26:38,713 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,714 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:26:38,714 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:38,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,715 INFO L82 PathProgramCache]: Analyzing trace with hash -269272602, now seen corresponding path program 1 times [2021-10-11 02:26:38,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164656804] [2021-10-11 02:26:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-10-11 02:26:38,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164656804] [2021-10-11 02:26:38,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:38,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95265353] [2021-10-11 02:26:38,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:38,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:38,964 INFO L87 Difference]: Start difference. First operand 1494 states and 1738 transitions. Second operand 3 states. [2021-10-11 02:26:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:39,395 INFO L93 Difference]: Finished difference Result 3413 states and 3982 transitions. [2021-10-11 02:26:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:39,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2021-10-11 02:26:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:39,408 INFO L225 Difference]: With dead ends: 3413 [2021-10-11 02:26:39,408 INFO L226 Difference]: Without dead ends: 1920 [2021-10-11 02:26:39,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:26:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-10-11 02:26:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1068. [2021-10-11 02:26:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:26:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1273 transitions. [2021-10-11 02:26:39,455 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1273 transitions. Word has length 177 [2021-10-11 02:26:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:39,455 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1273 transitions. [2021-10-11 02:26:39,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1273 transitions. [2021-10-11 02:26:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-10-11 02:26:39,462 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:39,462 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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] [2021-10-11 02:26:39,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:26:39,463 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:39,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1646211952, now seen corresponding path program 1 times [2021-10-11 02:26:39,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:39,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33174127] [2021-10-11 02:26:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:26:39,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33174127] [2021-10-11 02:26:39,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743266848] [2021-10-11 02:26:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/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 02:26:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:40,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:26:40,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:26:40,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:26:40,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:40,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:26:40,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352733893] [2021-10-11 02:26:40,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:40,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:40,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:40,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:40,862 INFO L87 Difference]: Start difference. First operand 1068 states and 1273 transitions. Second operand 3 states. [2021-10-11 02:26:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:41,315 INFO L93 Difference]: Finished difference Result 2348 states and 2803 transitions. [2021-10-11 02:26:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:41,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2021-10-11 02:26:41,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:41,324 INFO L225 Difference]: With dead ends: 2348 [2021-10-11 02:26:41,325 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:26:41,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:26:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-11 02:26:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:26:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1418 transitions. [2021-10-11 02:26:41,376 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1418 transitions. Word has length 241 [2021-10-11 02:26:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:41,377 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1418 transitions. [2021-10-11 02:26:41,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1418 transitions. [2021-10-11 02:26:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-10-11 02:26:41,386 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:41,387 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:26:41,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:26:41,612 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:41,613 INFO L82 PathProgramCache]: Analyzing trace with hash 769016947, now seen corresponding path program 1 times [2021-10-11 02:26:41,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:41,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110301899] [2021-10-11 02:26:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 313 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:42,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110301899] [2021-10-11 02:26:42,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94851105] [2021-10-11 02:26:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/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 02:26:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:42,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:26:42,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-11 02:26:42,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-11 02:26:43,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:43,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2021-10-11 02:26:43,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998268722] [2021-10-11 02:26:43,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:43,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:43,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:26:43,076 INFO L87 Difference]: Start difference. First operand 1210 states and 1418 transitions. Second operand 3 states. [2021-10-11 02:26:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:43,560 INFO L93 Difference]: Finished difference Result 2488 states and 2893 transitions. [2021-10-11 02:26:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:43,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2021-10-11 02:26:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:43,562 INFO L225 Difference]: With dead ends: 2488 [2021-10-11 02:26:43,562 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:43,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 545 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:26:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:43,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2021-10-11 02:26:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:43,567 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:43,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:43,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:43,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 02:26:43,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:43,908 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 36 [2021-10-11 02:26:44,117 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-10-11 02:26:44,236 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-10-11 02:26:44,240 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:26:44,240 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:26:44,240 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:26:44,241 INFO L262 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:44,241 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:26:44,241 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:26:44,241 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:26:44,241 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:26:44,242 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:26:44,242 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:26:44,242 INFO L262 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:44,242 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:26:44,242 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:26:44,242 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:26:44,243 INFO L262 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2021-10-11 02:26:44,243 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:26:44,243 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:26:44,243 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:26:44,243 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:26:44,244 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:26:44,244 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:26:44,244 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:26:44,244 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:26:44,244 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:26:44,245 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:26:44,246 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:26:44,246 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:26:44,246 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:26:44,247 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:26:44,247 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:26:44,247 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:26:44,247 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:26:44,247 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:26:44,247 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:26:44,248 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:26:44,248 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:26:44,248 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:26:44,248 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:26:44,248 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:26:44,248 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:44,249 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:26:44,249 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:26:44,250 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:26:44,250 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse2 (= ~a16~0 6)) (.cse1 (not .cse4)) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 (not (= ~a7~0 1)) .cse1) (and .cse2 .cse3) (and (<= ~a16~0 4) .cse4 (= ~a17~0 1)) (and .cse2 .cse1 (<= 15 ~a8~0)) (and (<= 14 ~a8~0) .cse0 .cse1) (and (= ~a21~0 1) .cse4) (and .cse0 .cse3)))) [2021-10-11 02:26:44,250 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:26:44,251 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:26:44,251 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:26:44,251 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:26:44,251 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:26:44,251 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:26:44,251 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:26:44,252 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:44,252 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:26:44,252 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:26:44,252 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:26:44,253 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:26:44,253 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:26:44,253 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:26:44,253 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:26:44,253 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:26:44,253 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:26:44,254 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:26:44,254 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:26:44,254 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:26:44,254 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:26:44,254 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:26:44,254 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:26:44,256 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse2 (= ~a16~0 6)) (.cse1 (not .cse4)) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 (not (= ~a7~0 1)) .cse1) (and .cse2 .cse3) (and (<= ~a16~0 4) .cse4 (= ~a17~0 1)) (and .cse2 .cse1 (<= 15 ~a8~0)) (and (<= 14 ~a8~0) .cse0 .cse1) (and (= ~a21~0 1) .cse4) (and .cse0 .cse3)))) [2021-10-11 02:26:44,256 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:26:44,256 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 570) no Hoare annotation was computed. [2021-10-11 02:26:44,256 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:26:44,257 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:26:44,257 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:26:44,257 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:26:44,257 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:26:44,257 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:26:44,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:44 BoogieIcfgContainer [2021-10-11 02:26:44,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:44,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:44,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:44,304 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:44,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:30" (3/4) ... [2021-10-11 02:26:44,308 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:44,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:26:44,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:26:44,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:26:44,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:26:44,513 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a9e45-8bde-46b7-95b4-1d0b7822efbf/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:44,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:44,515 INFO L168 Benchmark]: Toolchain (without parser) took 17925.10 ms. Allocated memory was 104.9 MB in the beginning and 375.4 MB in the end (delta: 270.5 MB). Free memory was 84.5 MB in the beginning and 214.2 MB in the end (delta: -129.7 MB). Peak memory consumption was 140.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:44,516 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:44,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.73 ms. Allocated memory is still 104.9 MB. Free memory was 84.3 MB in the beginning and 63.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:44,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.60 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 58.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:44,517 INFO L168 Benchmark]: Boogie Preprocessor took 87.43 ms. Allocated memory is still 104.9 MB. Free memory was 58.1 MB in the beginning and 53.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:44,518 INFO L168 Benchmark]: RCFGBuilder took 2766.41 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 53.3 MB in the beginning and 88.0 MB in the end (delta: -34.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:44,518 INFO L168 Benchmark]: TraceAbstraction took 13992.42 ms. Allocated memory was 136.3 MB in the beginning and 375.4 MB in the end (delta: 239.1 MB). Free memory was 86.9 MB in the beginning and 228.9 MB in the end (delta: -142.0 MB). Peak memory consumption was 97.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:44,518 INFO L168 Benchmark]: Witness Printer took 210.40 ms. Allocated memory is still 375.4 MB. Free memory was 228.9 MB in the beginning and 214.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:44,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 735.73 ms. Allocated memory is still 104.9 MB. Free memory was 84.3 MB in the beginning and 63.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.60 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 58.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.43 ms. Allocated memory is still 104.9 MB. Free memory was 58.1 MB in the beginning and 53.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2766.41 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 53.3 MB in the beginning and 88.0 MB in the end (delta: -34.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13992.42 ms. Allocated memory was 136.3 MB in the beginning and 375.4 MB in the end (delta: 239.1 MB). Free memory was 86.9 MB in the beginning and 228.9 MB in the end (delta: -142.0 MB). Peak memory consumption was 97.1 MB. Max. memory is 16.1 GB. * Witness Printer took 210.40 ms. Allocated memory is still 375.4 MB. Free memory was 228.9 MB in the beginning and 214.2 MB in the end (delta: 14.7 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: 570]: 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 && !(a7 == 1)) && !(a20 == 1)) || (a16 == 6 && a21 <= 0)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1))) || (a21 == 1 && a20 == 1)) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a7 == 1)) && !(a20 == 1)) || (a16 == 6 && a21 <= 0)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1))) || (a21 == 1 && a20 == 1)) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.3s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 626 SDtfs, 1066 SDslu, 60 SDs, 0 SdLazy, 3027 SolverSat, 784 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1070 GetRequests, 1040 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred 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: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 1531 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 133 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5534 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2281 NumberOfCodeBlocks, 2281 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2779 ConstructedInterpolants, 0 QuantifiedInterpolants, 2050902 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1117 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 2953/3226 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...