./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.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_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/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_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/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_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/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 4a525aa37d40889eb24e6cfe05fc1bbc60528354 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:24:59,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:59,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:59,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:59,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:59,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:59,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:59,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:59,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:00,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:00,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:00,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:00,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:00,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:00,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:00,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:00,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:00,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:00,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:00,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:00,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:00,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:00,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:00,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:00,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:00,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:00,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:00,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:00,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:00,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:00,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:00,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:00,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:00,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:00,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:00,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:00,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:00,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:00,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:00,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:00,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:00,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:00,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:00,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:00,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:00,144 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:00,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:00,144 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:00,144 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:00,145 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:00,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:00,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:00,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:00,147 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:00,147 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:00,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:00,148 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:00,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:00,149 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:00,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:00,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:00,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:00,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:00,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:00,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:00,151 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:00,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:00,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:00,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:00,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:00,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:00,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:00,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:00,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:00,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:00,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:00,157 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:00,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:00,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:00,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:00,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:00,158 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_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a525aa37d40889eb24e6cfe05fc1bbc60528354 [2021-10-11 02:25:00,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:00,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:00,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:00,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:00,470 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:00,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2021-10-11 02:25:00,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/data/5e4304b4d/795a5712bbe3468882349868620f03bd/FLAG4d4deff2f [2021-10-11 02:25:01,167 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:01,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2021-10-11 02:25:01,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/data/5e4304b4d/795a5712bbe3468882349868620f03bd/FLAG4d4deff2f [2021-10-11 02:25:01,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/data/5e4304b4d/795a5712bbe3468882349868620f03bd [2021-10-11 02:25:01,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:01,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:01,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:01,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:01,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:01,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:01" (1/1) ... [2021-10-11 02:25:01,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb025e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:01, skipping insertion in model container [2021-10-11 02:25:01,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:01" (1/1) ... [2021-10-11 02:25:01,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:01,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:02,076 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_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/sv-benchmarks/c/eca-rers2012/Problem01_label30.c[21088,21101] [2021-10-11 02:25:02,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:02,127 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:02,260 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_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/sv-benchmarks/c/eca-rers2012/Problem01_label30.c[21088,21101] [2021-10-11 02:25:02,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:02,290 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:02,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02 WrapperNode [2021-10-11 02:25:02,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:02,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:02,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:02,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:02,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:02,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:02,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:02,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:02,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... [2021-10-11 02:25:02,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:02,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:02,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:02,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:02,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/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 02:25:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:02,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:05,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:05,336 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:05,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:05 BoogieIcfgContainer [2021-10-11 02:25:05,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:05,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:05,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:05,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:05,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:01" (1/3) ... [2021-10-11 02:25:05,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c7e4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:05, skipping insertion in model container [2021-10-11 02:25:05,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:02" (2/3) ... [2021-10-11 02:25:05,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c7e4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:05, skipping insertion in model container [2021-10-11 02:25:05,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:05" (3/3) ... [2021-10-11 02:25:05,351 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label30.c [2021-10-11 02:25:05,370 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:05,381 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:05,394 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:25:05,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:05,437 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:05,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:05,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:05,437 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:05,438 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:05,438 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:05,438 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:25:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:25:05,472 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:05,473 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 02:25:05,474 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:05,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1806905688, now seen corresponding path program 1 times [2021-10-11 02:25:05,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:05,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417220195] [2021-10-11 02:25:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:06,211 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 02:25:06,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417220195] [2021-10-11 02:25:06,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:06,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:06,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839760654] [2021-10-11 02:25:06,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:06,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:06,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:06,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:06,241 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:25:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:07,361 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:25:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:07,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:25:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:07,392 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:25:07,393 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:25:07,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:25:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:25:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:25:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:25:07,453 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:25:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:07,454 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:25:07,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:25:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:25:07,459 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:07,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:07,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:07,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:07,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1703770823, now seen corresponding path program 1 times [2021-10-11 02:25:07,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:07,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291001081] [2021-10-11 02:25:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:07,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291001081] [2021-10-11 02:25:07,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:07,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:07,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009578187] [2021-10-11 02:25:07,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:07,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:07,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:07,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:07,689 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:25:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:08,547 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-11 02:25:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:08,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:25:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:08,551 INFO L225 Difference]: With dead ends: 500 [2021-10-11 02:25:08,551 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:25:08,554 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 02:25:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:25:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-11 02:25:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:25:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:25:08,575 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:25:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:08,576 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:25:08,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:25:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:25:08,581 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:08,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:08,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:08,582 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:08,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:08,583 INFO L82 PathProgramCache]: Analyzing trace with hash 350105719, now seen corresponding path program 1 times [2021-10-11 02:25:08,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:08,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279434706] [2021-10-11 02:25:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:08,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279434706] [2021-10-11 02:25:08,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:08,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:08,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223520504] [2021-10-11 02:25:08,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:08,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:08,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:08,677 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:25:09,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:09,244 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:25:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:09,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:25:09,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:09,247 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:25:09,248 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:25:09,252 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 02:25:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:25:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:25:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:25:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2021-10-11 02:25:09,299 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2021-10-11 02:25:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:09,299 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2021-10-11 02:25:09,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2021-10-11 02:25:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:25:09,303 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:09,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:09,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:09,304 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1470699301, now seen corresponding path program 1 times [2021-10-11 02:25:09,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:09,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906998295] [2021-10-11 02:25:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:09,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906998295] [2021-10-11 02:25:09,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:09,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:09,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758756477] [2021-10-11 02:25:09,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:09,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:09,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:09,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:09,417 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2021-10-11 02:25:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:09,780 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2021-10-11 02:25:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:09,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:25:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:09,785 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:25:09,785 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:25:09,786 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 02:25:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:25:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:25:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:25:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 780 transitions. [2021-10-11 02:25:09,816 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 780 transitions. Word has length 95 [2021-10-11 02:25:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:09,817 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 780 transitions. [2021-10-11 02:25:09,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 780 transitions. [2021-10-11 02:25:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-11 02:25:09,823 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:09,823 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:09,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:09,823 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1745918538, now seen corresponding path program 1 times [2021-10-11 02:25:09,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:09,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331930398] [2021-10-11 02:25:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:09,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331930398] [2021-10-11 02:25:09,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:09,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:09,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670848925] [2021-10-11 02:25:09,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:09,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:09,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:09,894 INFO L87 Difference]: Start difference. First operand 571 states and 780 transitions. Second operand 4 states. [2021-10-11 02:25:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:10,507 INFO L93 Difference]: Finished difference Result 1283 states and 1756 transitions. [2021-10-11 02:25:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:10,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2021-10-11 02:25:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:10,513 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:25:10,513 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:25:10,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:25:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-10-11 02:25:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:25:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 859 transitions. [2021-10-11 02:25:10,538 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 859 transitions. Word has length 101 [2021-10-11 02:25:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:10,539 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 859 transitions. [2021-10-11 02:25:10,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 859 transitions. [2021-10-11 02:25:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-11 02:25:10,541 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:10,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:10,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:25:10,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:10,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:10,543 INFO L82 PathProgramCache]: Analyzing trace with hash -656954291, now seen corresponding path program 1 times [2021-10-11 02:25:10,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:10,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402965453] [2021-10-11 02:25:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:10,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402965453] [2021-10-11 02:25:10,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:10,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:10,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116567024] [2021-10-11 02:25:10,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:10,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:10,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:10,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:10,630 INFO L87 Difference]: Start difference. First operand 642 states and 859 transitions. Second operand 4 states. [2021-10-11 02:25:11,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:11,302 INFO L93 Difference]: Finished difference Result 1496 states and 1980 transitions. [2021-10-11 02:25:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:11,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2021-10-11 02:25:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:11,312 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:25:11,313 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:25:11,314 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 02:25:11,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:25:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:25:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:25:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1024 transitions. [2021-10-11 02:25:11,339 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1024 transitions. Word has length 115 [2021-10-11 02:25:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:11,340 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1024 transitions. [2021-10-11 02:25:11,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1024 transitions. [2021-10-11 02:25:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-11 02:25:11,343 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:11,343 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:11,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:25:11,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash 905972520, now seen corresponding path program 1 times [2021-10-11 02:25:11,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:11,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702111878] [2021-10-11 02:25:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:11,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702111878] [2021-10-11 02:25:11,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:11,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:11,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052411497] [2021-10-11 02:25:11,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:11,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:11,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:11,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:11,486 INFO L87 Difference]: Start difference. First operand 784 states and 1024 transitions. Second operand 3 states. [2021-10-11 02:25:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:11,985 INFO L93 Difference]: Finished difference Result 1709 states and 2200 transitions. [2021-10-11 02:25:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:11,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2021-10-11 02:25:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:11,992 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:25:11,992 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:25:11,994 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 02:25:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:25:12,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:25:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:25:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1018 transitions. [2021-10-11 02:25:12,018 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1018 transitions. Word has length 132 [2021-10-11 02:25:12,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:12,018 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1018 transitions. [2021-10-11 02:25:12,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1018 transitions. [2021-10-11 02:25:12,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-11 02:25:12,021 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:12,021 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:12,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:25:12,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:12,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1422755638, now seen corresponding path program 1 times [2021-10-11 02:25:12,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:12,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598997694] [2021-10-11 02:25:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:25:12,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598997694] [2021-10-11 02:25:12,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:12,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:25:12,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780140542] [2021-10-11 02:25:12,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:12,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:12,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:12,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:12,226 INFO L87 Difference]: Start difference. First operand 784 states and 1018 transitions. Second operand 5 states. [2021-10-11 02:25:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:12,759 INFO L93 Difference]: Finished difference Result 1733 states and 2212 transitions. [2021-10-11 02:25:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:12,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2021-10-11 02:25:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:12,765 INFO L225 Difference]: With dead ends: 1733 [2021-10-11 02:25:12,765 INFO L226 Difference]: Without dead ends: 950 [2021-10-11 02:25:12,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-10-11 02:25:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2021-10-11 02:25:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:25:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1057 transitions. [2021-10-11 02:25:12,792 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1057 transitions. Word has length 175 [2021-10-11 02:25:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:12,793 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1057 transitions. [2021-10-11 02:25:12,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1057 transitions. [2021-10-11 02:25:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-10-11 02:25:12,796 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:12,797 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:12,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:25:12,797 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:12,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:12,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1489450953, now seen corresponding path program 1 times [2021-10-11 02:25:12,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:12,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676306455] [2021-10-11 02:25:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:25:12,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676306455] [2021-10-11 02:25:12,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:12,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:12,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251826905] [2021-10-11 02:25:12,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:12,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:12,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:12,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:12,961 INFO L87 Difference]: Start difference. First operand 855 states and 1057 transitions. Second operand 3 states. [2021-10-11 02:25:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:13,325 INFO L93 Difference]: Finished difference Result 1851 states and 2337 transitions. [2021-10-11 02:25:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:13,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2021-10-11 02:25:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:13,333 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:25:13,333 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:25:13,335 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 02:25:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:25:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:25:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:25:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1234 transitions. [2021-10-11 02:25:13,364 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1234 transitions. Word has length 188 [2021-10-11 02:25:13,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:13,365 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1234 transitions. [2021-10-11 02:25:13,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1234 transitions. [2021-10-11 02:25:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-10-11 02:25:13,369 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:13,370 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:13,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:25:13,370 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash 922670177, now seen corresponding path program 1 times [2021-10-11 02:25:13,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:13,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363605017] [2021-10-11 02:25:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:25:13,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363605017] [2021-10-11 02:25:13,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103492247] [2021-10-11 02:25:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/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 02:25:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:13,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:13,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:25:14,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:25:14,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:14,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:25:14,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528990079] [2021-10-11 02:25:14,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:14,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:14,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:14,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:14,526 INFO L87 Difference]: Start difference. First operand 997 states and 1234 transitions. Second operand 3 states. [2021-10-11 02:25:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:14,878 INFO L93 Difference]: Finished difference Result 2277 states and 2880 transitions. [2021-10-11 02:25:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:14,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2021-10-11 02:25:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:14,886 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:25:14,886 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:25:14,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:25:14,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-11 02:25:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:25:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1493 transitions. [2021-10-11 02:25:14,922 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1493 transitions. Word has length 197 [2021-10-11 02:25:14,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:14,922 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1493 transitions. [2021-10-11 02:25:14,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1493 transitions. [2021-10-11 02:25:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-11 02:25:14,926 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:14,927 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:15,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:25:15,149 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1501977787, now seen corresponding path program 1 times [2021-10-11 02:25:15,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:15,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026245648] [2021-10-11 02:25:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:25:15,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026245648] [2021-10-11 02:25:15,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527178688] [2021-10-11 02:25:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/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 02:25:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:15,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:15,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:25:16,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:25:16,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:16,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:25:16,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75715227] [2021-10-11 02:25:16,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:16,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:16,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:16,209 INFO L87 Difference]: Start difference. First operand 1210 states and 1493 transitions. Second operand 3 states. [2021-10-11 02:25:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:16,555 INFO L93 Difference]: Finished difference Result 2490 states and 3080 transitions. [2021-10-11 02:25:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:16,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2021-10-11 02:25:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:16,564 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:25:16,564 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:25:16,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:25:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-11 02:25:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:25:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1459 transitions. [2021-10-11 02:25:16,598 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1459 transitions. Word has length 213 [2021-10-11 02:25:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:16,599 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1459 transitions. [2021-10-11 02:25:16,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1459 transitions. [2021-10-11 02:25:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-10-11 02:25:16,603 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:16,603 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:16,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:16,817 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:16,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:16,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1518782906, now seen corresponding path program 1 times [2021-10-11 02:25:16,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:16,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887887917] [2021-10-11 02:25:16,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:25:16,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887887917] [2021-10-11 02:25:16,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:16,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:16,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504684516] [2021-10-11 02:25:16,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:16,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:16,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:16,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:16,989 INFO L87 Difference]: Start difference. First operand 1210 states and 1459 transitions. Second operand 3 states. [2021-10-11 02:25:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:17,298 INFO L93 Difference]: Finished difference Result 2204 states and 2624 transitions. [2021-10-11 02:25:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:17,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2021-10-11 02:25:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:17,299 INFO L225 Difference]: With dead ends: 2204 [2021-10-11 02:25:17,299 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:17,304 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 02:25:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:17,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 227 [2021-10-11 02:25:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:17,305 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:17,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:17,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:17,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:25:17,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:17,629 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-10-11 02:25:17,818 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-10-11 02:25:17,822 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:25:17,822 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:25:17,822 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:25:17,823 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:25:17,823 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:25:17,823 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:25:17,823 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:25:17,823 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:25:17,823 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:25:17,824 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:25:17,824 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:25:17,824 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:25:17,825 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:25:17,826 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:25:17,826 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:25:17,826 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:25:17,826 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:25:17,826 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:25:17,826 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:25:17,827 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:25:17,827 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:25:17,827 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:25:17,827 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:25:17,827 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:25:17,827 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:25:17,828 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:25:17,829 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:25:17,830 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:17,830 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:25:17,830 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:25:17,830 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:25:17,832 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse3 (not .cse8)) (.cse1 (= ~a16~0 6)) (.cse9 (= ~a12~0 8)) (.cse2 (not (= ~a7~0 1))) (.cse4 (= ~a17~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a17~0 0)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse2 .cse3 .cse4) (and .cse1 .cse6 .cse7) (and .cse0 .cse6 .cse8 .cse2) (and .cse0 .cse9 (= ~a8~0 13) .cse8 (= ~a16~0 4) .cse4) (and .cse0 .cse1 .cse6 .cse2) (and .cse0 .cse9 .cse8 .cse2 .cse4) (and .cse0 .cse5 .cse6) (and .cse5 .cse7)))) [2021-10-11 02:25:17,832 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:25:17,833 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:25:17,834 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:25:17,835 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:25:17,835 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:25:17,835 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:25:17,835 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:25:17,835 INFO L262 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:25:17,835 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse3 (not .cse8)) (.cse1 (= ~a16~0 6)) (.cse9 (= ~a12~0 8)) (.cse2 (not (= ~a7~0 1))) (.cse4 (= ~a17~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a17~0 0)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse2 .cse3 .cse4) (and .cse1 .cse6 .cse7) (and .cse0 .cse6 .cse8 .cse2) (and .cse0 .cse9 (= ~a8~0 13) .cse8 (= ~a16~0 4) .cse4) (and .cse0 .cse1 .cse6 .cse2) (and .cse0 .cse9 .cse8 .cse2 .cse4) (and .cse0 .cse5 .cse6) (and .cse5 .cse7)))) [2021-10-11 02:25:17,835 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:25:17,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 561) no Hoare annotation was computed. [2021-10-11 02:25:17,836 INFO L262 CegarLoopResult]: For program point L561(line 561) no Hoare annotation was computed. [2021-10-11 02:25:17,836 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:25:17,836 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:25:17,836 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:25:17,836 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:25:17,836 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:25:17,836 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:25:17,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:17 BoogieIcfgContainer [2021-10-11 02:25:17,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:17,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:17,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:17,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:17,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:05" (3/4) ... [2021-10-11 02:25:17,883 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:17,915 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:25:17,917 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-11 02:25:17,918 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:25:17,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:25:18,088 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899673aa-5eff-4f96-ba3b-cd93df6f4cf3/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:18,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:18,089 INFO L168 Benchmark]: Toolchain (without parser) took 16677.35 ms. Allocated memory was 100.7 MB in the beginning and 419.4 MB in the end (delta: 318.8 MB). Free memory was 65.9 MB in the beginning and 321.8 MB in the end (delta: -255.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:18,090 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:18,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 868.18 ms. Allocated memory is still 100.7 MB. Free memory was 65.7 MB in the beginning and 59.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:18,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.35 ms. Allocated memory is still 100.7 MB. Free memory was 59.9 MB in the beginning and 54.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:18,091 INFO L168 Benchmark]: Boogie Preprocessor took 94.40 ms. Allocated memory is still 100.7 MB. Free memory was 54.4 MB in the beginning and 49.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:18,092 INFO L168 Benchmark]: RCFGBuilder took 2843.08 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 49.8 MB in the beginning and 96.5 MB in the end (delta: -46.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:18,092 INFO L168 Benchmark]: TraceAbstraction took 12536.43 ms. Allocated memory was 163.6 MB in the beginning and 419.4 MB in the end (delta: 255.9 MB). Free memory was 95.5 MB in the beginning and 336.5 MB in the end (delta: -241.0 MB). Peak memory consumption was 155.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:18,092 INFO L168 Benchmark]: Witness Printer took 209.03 ms. Allocated memory is still 419.4 MB. Free memory was 336.5 MB in the beginning and 321.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:18,095 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 52.5 MB in the beginning and 52.4 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 868.18 ms. Allocated memory is still 100.7 MB. Free memory was 65.7 MB in the beginning and 59.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.35 ms. Allocated memory is still 100.7 MB. Free memory was 59.9 MB in the beginning and 54.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.40 ms. Allocated memory is still 100.7 MB. Free memory was 54.4 MB in the beginning and 49.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2843.08 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 49.8 MB in the beginning and 96.5 MB in the end (delta: -46.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12536.43 ms. Allocated memory was 163.6 MB in the beginning and 419.4 MB in the end (delta: 255.9 MB). Free memory was 95.5 MB in the beginning and 336.5 MB in the end (delta: -241.0 MB). Peak memory consumption was 155.4 MB. Max. memory is 16.1 GB. * Witness Printer took 209.03 ms. Allocated memory is still 419.4 MB. Free memory was 336.5 MB in the beginning and 321.8 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: 561]: 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: (((((((((((a21 == 1 && a16 == 6) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1) || ((((a21 == 1 && a16 <= 5) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1)) || ((a16 == 6 && a17 <= 0) && a21 <= 0)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && !(a7 == 1))) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (((a21 == 1 && a16 == 6) && a17 <= 0) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a21 == 1 && a16 <= 5) && a17 <= 0)) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a21 == 1 && a16 == 6) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1) || ((((a21 == 1 && a16 <= 5) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1)) || ((a16 == 6 && a17 <= 0) && a21 <= 0)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && !(a7 == 1))) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (((a21 == 1 && a16 == 6) && a17 <= 0) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a21 == 1 && a16 <= 5) && a17 <= 0)) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 670 SDtfs, 1104 SDslu, 71 SDs, 0 SdLazy, 3156 SolverSat, 772 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 861 GetRequests, 833 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 663 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 257 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3756 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 2088 NumberOfCodeBlocks, 2088 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2482 ConstructedInterpolants, 0 QuantifiedInterpolants, 1459526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 958 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 2372/2522 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...