./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.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_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/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_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/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_f1a079a8-1fab-40dc-b001-29db4573a316/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 6d4861c19654d56144743310eef6a7eb4ce70026 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:18,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:18,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:18,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:18,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:18,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:18,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:18,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:19,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:19,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:19,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:19,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:19,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:19,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:19,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:19,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:19,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:19,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:19,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:19,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:19,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:19,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:19,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:19,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:19,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:19,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:19,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:19,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:19,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:19,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:19,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:19,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:19,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:19,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:19,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:19,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:19,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:19,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:19,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:19,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:19,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:19,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:19,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:19,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:19,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:19,121 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:19,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:19,122 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:19,122 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:19,122 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:19,129 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:19,129 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:19,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:19,131 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:19,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:19,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:19,132 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:19,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:19,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:19,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:19,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:19,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:19,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:19,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:19,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:19,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:19,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:19,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:19,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:19,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:19,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:19,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:19,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:19,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:19,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:19,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:19,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:19,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:19,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:19,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:19,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:19,143 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_f1a079a8-1fab-40dc-b001-29db4573a316/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d4861c19654d56144743310eef6a7eb4ce70026 [2021-10-11 02:24:19,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:19,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:19,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:19,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:19,464 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:19,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2021-10-11 02:24:19,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/data/4559ace1a/5dacff96b5434139a1cec8d822f2db24/FLAG71a407b3c [2021-10-11 02:24:20,131 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:20,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2021-10-11 02:24:20,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/data/4559ace1a/5dacff96b5434139a1cec8d822f2db24/FLAG71a407b3c [2021-10-11 02:24:20,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/data/4559ace1a/5dacff96b5434139a1cec8d822f2db24 [2021-10-11 02:24:20,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:20,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:20,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:20,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:20,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:20,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:20" (1/1) ... [2021-10-11 02:24:20,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a8cb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:20, skipping insertion in model container [2021-10-11 02:24:20,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:20" (1/1) ... [2021-10-11 02:24:20,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:20,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:20,987 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_f1a079a8-1fab-40dc-b001-29db4573a316/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2021-10-11 02:24:21,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:21,016 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:21,104 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_f1a079a8-1fab-40dc-b001-29db4573a316/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2021-10-11 02:24:21,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:21,130 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:21,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21 WrapperNode [2021-10-11 02:24:21,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:21,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:21,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:21,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:21,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:21,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:21,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:21,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:21,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:21,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:21,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:21,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:21,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:23,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:23,293 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:24:23,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:23 BoogieIcfgContainer [2021-10-11 02:24:23,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:23,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:23,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:23,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:23,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:20" (1/3) ... [2021-10-11 02:24:23,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48eb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:23, skipping insertion in model container [2021-10-11 02:24:23,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (2/3) ... [2021-10-11 02:24:23,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48eb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:23, skipping insertion in model container [2021-10-11 02:24:23,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:23" (3/3) ... [2021-10-11 02:24:23,311 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label45.c [2021-10-11 02:24:23,326 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:23,330 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:23,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:24:23,384 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:23,385 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:23,385 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:23,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:23,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:23,386 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:23,386 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:23,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:24:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:24:23,418 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:23,419 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 02:24:23,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:23,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1323232409, now seen corresponding path program 1 times [2021-10-11 02:24:23,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:23,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113624149] [2021-10-11 02:24:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:23,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113624149] [2021-10-11 02:24:23,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:23,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:23,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156122047] [2021-10-11 02:24:23,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:23,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:23,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:23,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:23,920 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:24:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:24,490 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:24:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:24,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:24:24,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:24,517 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:24:24,518 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:24:24,522 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 02:24:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:24:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:24:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:24:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:24:24,588 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:24:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:24,589 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:24:24,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:24:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:24:24,593 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:24,593 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 02:24:24,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:24,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:24,595 INFO L82 PathProgramCache]: Analyzing trace with hash 585785311, now seen corresponding path program 1 times [2021-10-11 02:24:24,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:24,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451519239] [2021-10-11 02:24:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:24,672 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 02:24:24,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451519239] [2021-10-11 02:24:24,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:24,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:24,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383197710] [2021-10-11 02:24:24,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:24,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:24,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:24,676 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:24:25,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:25,052 INFO L93 Difference]: Finished difference Result 433 states and 775 transitions. [2021-10-11 02:24:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:25,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:24:25,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:25,056 INFO L225 Difference]: With dead ends: 433 [2021-10-11 02:24:25,056 INFO L226 Difference]: Without dead ends: 289 [2021-10-11 02:24:25,058 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 02:24:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-11 02:24:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2021-10-11 02:24:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:24:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2021-10-11 02:24:25,081 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2021-10-11 02:24:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:25,081 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2021-10-11 02:24:25,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2021-10-11 02:24:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:24:25,086 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:25,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:25,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:25,087 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:25,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash 919997269, now seen corresponding path program 1 times [2021-10-11 02:24:25,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:25,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357995539] [2021-10-11 02:24:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:25,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357995539] [2021-10-11 02:24:25,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:25,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:25,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36743395] [2021-10-11 02:24:25,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:25,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:25,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:25,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:25,201 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand 3 states. [2021-10-11 02:24:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:25,565 INFO L93 Difference]: Finished difference Result 857 states and 1437 transitions. [2021-10-11 02:24:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:25,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:24:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:25,572 INFO L225 Difference]: With dead ends: 857 [2021-10-11 02:24:25,572 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:24:25,574 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 02:24:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:24:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-10-11 02:24:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:24:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 884 transitions. [2021-10-11 02:24:25,604 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 884 transitions. Word has length 80 [2021-10-11 02:24:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:25,604 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 884 transitions. [2021-10-11 02:24:25,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 884 transitions. [2021-10-11 02:24:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:24:25,612 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:25,612 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 02:24:25,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:25,612 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:25,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1341157260, now seen corresponding path program 1 times [2021-10-11 02:24:25,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:25,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318349753] [2021-10-11 02:24:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:25,723 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 02:24:25,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318349753] [2021-10-11 02:24:25,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:25,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:25,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846281011] [2021-10-11 02:24:25,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:25,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:25,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:25,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:25,739 INFO L87 Difference]: Start difference. First operand 571 states and 884 transitions. Second operand 4 states. [2021-10-11 02:24:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,291 INFO L93 Difference]: Finished difference Result 1425 states and 2183 transitions. [2021-10-11 02:24:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:26,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:24:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,297 INFO L225 Difference]: With dead ends: 1425 [2021-10-11 02:24:26,297 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:24:26,299 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 02:24:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:24:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2021-10-11 02:24:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:24:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1056 transitions. [2021-10-11 02:24:26,339 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1056 transitions. Word has length 83 [2021-10-11 02:24:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,340 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1056 transitions. [2021-10-11 02:24:26,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:26,340 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1056 transitions. [2021-10-11 02:24:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:24:26,344 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:26,344 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2021-10-11 02:24:26,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:26,344 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1330250781, now seen corresponding path program 1 times [2021-10-11 02:24:26,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:26,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106887990] [2021-10-11 02:24:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,419 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 02:24:26,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106887990] [2021-10-11 02:24:26,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:26,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613406366] [2021-10-11 02:24:26,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:26,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:26,423 INFO L87 Difference]: Start difference. First operand 713 states and 1056 transitions. Second operand 3 states. [2021-10-11 02:24:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,814 INFO L93 Difference]: Finished difference Result 1922 states and 2886 transitions. [2021-10-11 02:24:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:26,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:24:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,821 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:24:26,822 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:24:26,823 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 02:24:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:24:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2021-10-11 02:24:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:24:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1510 transitions. [2021-10-11 02:24:26,857 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1510 transitions. Word has length 84 [2021-10-11 02:24:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,857 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1510 transitions. [2021-10-11 02:24:26,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1510 transitions. [2021-10-11 02:24:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-11 02:24:26,859 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:26,860 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 02:24:26,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:26,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1554339286, now seen corresponding path program 1 times [2021-10-11 02:24:26,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:26,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125217560] [2021-10-11 02:24:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,915 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 02:24:26,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125217560] [2021-10-11 02:24:26,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:26,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581924155] [2021-10-11 02:24:26,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:26,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:26,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:26,917 INFO L87 Difference]: Start difference. First operand 997 states and 1510 transitions. Second operand 3 states. [2021-10-11 02:24:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:27,283 INFO L93 Difference]: Finished difference Result 2206 states and 3304 transitions. [2021-10-11 02:24:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:27,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2021-10-11 02:24:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:27,293 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:24:27,293 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:24:27,295 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 02:24:27,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:24:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2021-10-11 02:24:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:24:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1741 transitions. [2021-10-11 02:24:27,337 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1741 transitions. Word has length 87 [2021-10-11 02:24:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:27,338 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1741 transitions. [2021-10-11 02:24:27,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1741 transitions. [2021-10-11 02:24:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:24:27,341 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:27,341 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 02:24:27,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:27,341 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:27,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1204458482, now seen corresponding path program 1 times [2021-10-11 02:24:27,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:27,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614549118] [2021-10-11 02:24:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:27,398 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 02:24:27,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614549118] [2021-10-11 02:24:27,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:27,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:27,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298958707] [2021-10-11 02:24:27,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:27,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:27,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:27,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:27,400 INFO L87 Difference]: Start difference. First operand 1210 states and 1741 transitions. Second operand 4 states. [2021-10-11 02:24:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:27,922 INFO L93 Difference]: Finished difference Result 2490 states and 3570 transitions. [2021-10-11 02:24:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:27,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2021-10-11 02:24:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:27,930 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:24:27,930 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:24:27,932 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 02:24:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:24:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2021-10-11 02:24:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:24:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1598 transitions. [2021-10-11 02:24:27,966 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1598 transitions. Word has length 91 [2021-10-11 02:24:27,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:27,967 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1598 transitions. [2021-10-11 02:24:27,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:27,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1598 transitions. [2021-10-11 02:24:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-11 02:24:27,969 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:27,969 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:27,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:27,970 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:27,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:27,970 INFO L82 PathProgramCache]: Analyzing trace with hash 397481123, now seen corresponding path program 1 times [2021-10-11 02:24:27,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:27,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4827426] [2021-10-11 02:24:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:28,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4827426] [2021-10-11 02:24:28,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:28,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:28,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410197732] [2021-10-11 02:24:28,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:28,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:28,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:28,028 INFO L87 Difference]: Start difference. First operand 1139 states and 1598 transitions. Second operand 3 states. [2021-10-11 02:24:28,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:28,345 INFO L93 Difference]: Finished difference Result 2490 states and 3438 transitions. [2021-10-11 02:24:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:28,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2021-10-11 02:24:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:28,352 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:24:28,353 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:24:28,355 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 02:24:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:24:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2021-10-11 02:24:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:24:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1495 transitions. [2021-10-11 02:24:28,387 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1495 transitions. Word has length 100 [2021-10-11 02:24:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:28,389 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1495 transitions. [2021-10-11 02:24:28,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1495 transitions. [2021-10-11 02:24:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-11 02:24:28,391 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:28,392 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:28,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:24:28,394 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:28,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2113460587, now seen corresponding path program 1 times [2021-10-11 02:24:28,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:28,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843548952] [2021-10-11 02:24:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843548952] [2021-10-11 02:24:28,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438419366] [2021-10-11 02:24:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:28,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:24:28,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:24:28,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:24:28,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:28,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:24:28,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209882903] [2021-10-11 02:24:28,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:28,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:28,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:28,924 INFO L87 Difference]: Start difference. First operand 1210 states and 1495 transitions. Second operand 3 states. [2021-10-11 02:24:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:29,257 INFO L93 Difference]: Finished difference Result 2774 states and 3461 transitions. [2021-10-11 02:24:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:29,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2021-10-11 02:24:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:29,269 INFO L225 Difference]: With dead ends: 2774 [2021-10-11 02:24:29,270 INFO L226 Difference]: Without dead ends: 1565 [2021-10-11 02:24:29,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-10-11 02:24:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2021-10-11 02:24:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2021-10-11 02:24:29,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1920 transitions. [2021-10-11 02:24:29,315 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1920 transitions. Word has length 104 [2021-10-11 02:24:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:29,317 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1920 transitions. [2021-10-11 02:24:29,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:29,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1920 transitions. [2021-10-11 02:24:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-11 02:24:29,321 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:29,321 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 02:24:29,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:24:29,535 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:29,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1071158234, now seen corresponding path program 1 times [2021-10-11 02:24:29,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:29,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22666914] [2021-10-11 02:24:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-11 02:24:29,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22666914] [2021-10-11 02:24:29,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369790787] [2021-10-11 02:24:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:29,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:24:29,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:24:29,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:24:29,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:29,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:24:29,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188026440] [2021-10-11 02:24:29,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:29,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:29,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:29,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:29,966 INFO L87 Difference]: Start difference. First operand 1565 states and 1920 transitions. Second operand 3 states. [2021-10-11 02:24:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:30,289 INFO L93 Difference]: Finished difference Result 3342 states and 4071 transitions. [2021-10-11 02:24:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:30,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2021-10-11 02:24:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:30,299 INFO L225 Difference]: With dead ends: 3342 [2021-10-11 02:24:30,299 INFO L226 Difference]: Without dead ends: 1778 [2021-10-11 02:24:30,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-10-11 02:24:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1707. [2021-10-11 02:24:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2021-10-11 02:24:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2025 transitions. [2021-10-11 02:24:30,344 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2025 transitions. Word has length 120 [2021-10-11 02:24:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:30,344 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2025 transitions. [2021-10-11 02:24:30,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2025 transitions. [2021-10-11 02:24:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-11 02:24:30,348 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:30,348 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2021-10-11 02:24:30,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:24:30,574 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:30,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:30,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1361892018, now seen corresponding path program 1 times [2021-10-11 02:24:30,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:30,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467312038] [2021-10-11 02:24:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:24:30,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467312038] [2021-10-11 02:24:30,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:30,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:30,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083367215] [2021-10-11 02:24:30,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:30,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:30,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:30,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:30,745 INFO L87 Difference]: Start difference. First operand 1707 states and 2025 transitions. Second operand 3 states. [2021-10-11 02:24:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:31,027 INFO L93 Difference]: Finished difference Result 3910 states and 4672 transitions. [2021-10-11 02:24:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:31,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2021-10-11 02:24:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:31,039 INFO L225 Difference]: With dead ends: 3910 [2021-10-11 02:24:31,039 INFO L226 Difference]: Without dead ends: 2204 [2021-10-11 02:24:31,042 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 02:24:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-10-11 02:24:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1920. [2021-10-11 02:24:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2021-10-11 02:24:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2293 transitions. [2021-10-11 02:24:31,098 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2293 transitions. Word has length 121 [2021-10-11 02:24:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:31,098 INFO L481 AbstractCegarLoop]: Abstraction has 1920 states and 2293 transitions. [2021-10-11 02:24:31,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2293 transitions. [2021-10-11 02:24:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-11 02:24:31,103 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:31,104 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:31,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:24:31,104 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:31,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1125116997, now seen corresponding path program 1 times [2021-10-11 02:24:31,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:31,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395449008] [2021-10-11 02:24:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-10-11 02:24:31,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395449008] [2021-10-11 02:24:31,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612512725] [2021-10-11 02:24:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:31,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:24:31,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-11 02:24:31,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-11 02:24:31,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:31,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:24:31,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484960764] [2021-10-11 02:24:31,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:31,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:31,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:31,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:31,700 INFO L87 Difference]: Start difference. First operand 1920 states and 2293 transitions. Second operand 3 states. [2021-10-11 02:24:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:32,039 INFO L93 Difference]: Finished difference Result 4121 states and 4915 transitions. [2021-10-11 02:24:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:32,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2021-10-11 02:24:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:32,040 INFO L225 Difference]: With dead ends: 4121 [2021-10-11 02:24:32,040 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:32,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:32,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2021-10-11 02:24:32,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:32,051 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:32,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:32,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:32,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:32,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:24:32,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:32,450 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:24:32,450 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:24:32,451 INFO L262 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L537(line 537) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:24:32,452 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:24:32,453 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:24:32,454 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:24:32,455 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:24:32,456 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 537) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:24:32,457 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:24:32,458 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:24:32,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:32 BoogieIcfgContainer [2021-10-11 02:24:32,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:32,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:32,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:32,476 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:32,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:23" (3/4) ... [2021-10-11 02:24:32,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:32,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:24:32,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:24:32,504 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:24:32,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:24:32,632 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a079a8-1fab-40dc-b001-29db4573a316/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:32,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:32,634 INFO L168 Benchmark]: Toolchain (without parser) took 12223.51 ms. Allocated memory was 100.7 MB in the beginning and 388.0 MB in the end (delta: 287.3 MB). Free memory was 67.7 MB in the beginning and 237.8 MB in the end (delta: -170.1 MB). Peak memory consumption was 116.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:32,634 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 57.0 MB in the beginning and 56.9 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:32,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.70 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.4 MB in the beginning and 80.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:32,635 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.05 ms. Allocated memory is still 121.6 MB. Free memory was 80.3 MB in the beginning and 74.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:32,636 INFO L168 Benchmark]: Boogie Preprocessor took 83.00 ms. Allocated memory is still 121.6 MB. Free memory was 74.7 MB in the beginning and 70.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:32,636 INFO L168 Benchmark]: RCFGBuilder took 1988.07 ms. Allocated memory is still 121.6 MB. Free memory was 69.9 MB in the beginning and 48.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:32,636 INFO L168 Benchmark]: TraceAbstraction took 9172.86 ms. Allocated memory was 121.6 MB in the beginning and 388.0 MB in the end (delta: 266.3 MB). Free memory was 48.6 MB in the beginning and 253.5 MB in the end (delta: -204.9 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:32,637 INFO L168 Benchmark]: Witness Printer took 156.70 ms. Allocated memory is still 388.0 MB. Free memory was 252.5 MB in the beginning and 237.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:32,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 57.0 MB in the beginning and 56.9 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.70 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.4 MB in the beginning and 80.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.05 ms. Allocated memory is still 121.6 MB. Free memory was 80.3 MB in the beginning and 74.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.00 ms. Allocated memory is still 121.6 MB. Free memory was 74.7 MB in the beginning and 70.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1988.07 ms. Allocated memory is still 121.6 MB. Free memory was 69.9 MB in the beginning and 48.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9172.86 ms. Allocated memory was 121.6 MB in the beginning and 388.0 MB in the end (delta: 266.3 MB). Free memory was 48.6 MB in the beginning and 253.5 MB in the end (delta: -204.9 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. * Witness Printer took 156.70 ms. Allocated memory is still 388.0 MB. Free memory was 252.5 MB in the beginning and 237.8 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: 537]: 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: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && a20 == 1)) || 15 <= a8 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && a20 == 1)) || 15 <= a8 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 577 SDtfs, 784 SDslu, 54 SDs, 0 SdLazy, 2737 SolverSat, 734 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 818 GetRequests, 795 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1920occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 854 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 57 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2338 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1587 NumberOfCodeBlocks, 1587 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1966 ConstructedInterpolants, 0 QuantifiedInterpolants, 500088 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1052 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 909/918 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...