./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label25.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_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/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_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/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_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/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 5c11f81acb23d199db5ff3acfeb2ee342874a261 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:55,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:55,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:55,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:55,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:55,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:55,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:55,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:55,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:55,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:55,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:55,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:55,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:55,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:55,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:55,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:55,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:55,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:55,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:55,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:55,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:55,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:55,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:55,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:55,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:55,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:55,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:55,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:55,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:55,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:55,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:55,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:55,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:55,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:55,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:55,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:55,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:55,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:55,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:55,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:55,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:55,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:55,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:55,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:55,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:55,488 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:55,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:55,489 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:55,489 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:55,489 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:55,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:55,490 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:55,490 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:55,490 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:55,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:55,491 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:55,491 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:55,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:55,492 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:55,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:55,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:55,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:55,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:55,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:55,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:55,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:55,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:55,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:55,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:55,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:55,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:55,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:55,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:55,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:55,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:55,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:55,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:55,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:55,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:55,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:55,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:55,500 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_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c11f81acb23d199db5ff3acfeb2ee342874a261 [2021-10-11 02:27:55,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:55,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:55,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:55,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:55,863 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:55,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c [2021-10-11 02:27:55,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/data/64cc6e0ca/c1a611f9bb7844f9a9ca4321c82e31df/FLAG81710a5b3 [2021-10-11 02:27:56,690 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:56,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/sv-benchmarks/c/eca-rers2012/Problem01_label25.c [2021-10-11 02:27:56,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/data/64cc6e0ca/c1a611f9bb7844f9a9ca4321c82e31df/FLAG81710a5b3 [2021-10-11 02:27:56,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/data/64cc6e0ca/c1a611f9bb7844f9a9ca4321c82e31df [2021-10-11 02:27:56,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:56,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:56,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:56,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:56,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:56,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:56" (1/1) ... [2021-10-11 02:27:56,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4710103c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:56, skipping insertion in model container [2021-10-11 02:27:56,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:56" (1/1) ... [2021-10-11 02:27:56,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:56,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:57,335 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_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/sv-benchmarks/c/eca-rers2012/Problem01_label25.c[20346,20359] [2021-10-11 02:27:57,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:57,373 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:57,519 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_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/sv-benchmarks/c/eca-rers2012/Problem01_label25.c[20346,20359] [2021-10-11 02:27:57,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:57,544 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:57,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57 WrapperNode [2021-10-11 02:27:57,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:57,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:57,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:57,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:57,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:57,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:57,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:57,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:57,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... [2021-10-11 02:27:57,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:57,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:57,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:57,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:57,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:57,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:00,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:00,191 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:00,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:00 BoogieIcfgContainer [2021-10-11 02:28:00,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:00,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:00,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:00,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:00,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:56" (1/3) ... [2021-10-11 02:28:00,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8505ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:00, skipping insertion in model container [2021-10-11 02:28:00,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:57" (2/3) ... [2021-10-11 02:28:00,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8505ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:00, skipping insertion in model container [2021-10-11 02:28:00,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:00" (3/3) ... [2021-10-11 02:28:00,205 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label25.c [2021-10-11 02:28:00,219 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:00,223 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:00,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:00,270 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:00,270 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:00,270 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:00,270 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:00,270 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:00,270 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:00,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:00,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:28:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:28:00,293 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:00,294 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 02:28:00,294 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:00,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1806907224, now seen corresponding path program 1 times [2021-10-11 02:28:00,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:00,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598419953] [2021-10-11 02:28:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,884 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 02:28:00,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598419953] [2021-10-11 02:28:00,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:00,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:00,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311726565] [2021-10-11 02:28:00,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:00,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:00,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:00,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:00,913 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:28:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:01,770 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:28:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:01,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:28:01,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:01,804 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:28:01,805 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:28:01,810 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 02:28:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:28:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:28:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:28:01,886 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:28:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:01,887 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:28:01,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:28:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:28:01,898 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:01,898 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 02:28:01,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:01,899 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:01,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1703772359, now seen corresponding path program 1 times [2021-10-11 02:28:01,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:01,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494494718] [2021-10-11 02:28:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:02,146 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 02:28:02,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494494718] [2021-10-11 02:28:02,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:02,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:02,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800991197] [2021-10-11 02:28:02,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:02,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:02,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:02,154 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:28:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:02,841 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-11 02:28:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:02,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:28:02,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:02,846 INFO L225 Difference]: With dead ends: 500 [2021-10-11 02:28:02,846 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:28:02,852 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 02:28:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:28:02,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-11 02:28:02,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:02,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:28:02,873 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:28:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:02,874 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:28:02,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:28:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:28:02,876 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:02,876 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 02:28:02,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:02,877 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:02,878 INFO L82 PathProgramCache]: Analyzing trace with hash 350104183, now seen corresponding path program 1 times [2021-10-11 02:28:02,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:02,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034945660] [2021-10-11 02:28:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:03,015 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 02:28:03,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034945660] [2021-10-11 02:28:03,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:03,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:03,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126464851] [2021-10-11 02:28:03,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:03,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:03,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:03,022 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:28:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:03,625 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:28:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:03,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:28:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:03,635 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:28:03,636 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:28:03,637 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 02:28:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:28:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:28:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:28:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2021-10-11 02:28:03,674 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2021-10-11 02:28:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:03,674 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2021-10-11 02:28:03,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2021-10-11 02:28:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:28:03,676 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:03,676 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 02:28:03,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:03,677 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:03,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:03,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1470700837, now seen corresponding path program 1 times [2021-10-11 02:28:03,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:03,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898342830] [2021-10-11 02:28:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:03,798 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 02:28:03,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898342830] [2021-10-11 02:28:03,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:03,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:03,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397127841] [2021-10-11 02:28:03,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:03,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:03,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:03,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:03,800 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2021-10-11 02:28:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:04,200 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2021-10-11 02:28:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:04,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:28:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:04,205 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:28:04,206 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:28:04,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:28:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:28:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:28:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2021-10-11 02:28:04,228 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 95 [2021-10-11 02:28:04,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:04,228 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2021-10-11 02:28:04,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2021-10-11 02:28:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-11 02:28:04,231 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:04,231 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:28:04,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:04,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:04,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1896312889, now seen corresponding path program 1 times [2021-10-11 02:28:04,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:04,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588752821] [2021-10-11 02:28:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:28:04,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588752821] [2021-10-11 02:28:04,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:04,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:04,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100318365] [2021-10-11 02:28:04,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:04,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:04,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:04,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:04,362 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2021-10-11 02:28:04,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:04,925 INFO L93 Difference]: Finished difference Result 1283 states and 1752 transitions. [2021-10-11 02:28:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:04,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2021-10-11 02:28:04,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:04,931 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:28:04,931 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:28:04,933 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 02:28:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:28:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-10-11 02:28:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:28:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2021-10-11 02:28:04,958 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2021-10-11 02:28:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:04,959 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2021-10-11 02:28:04,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2021-10-11 02:28:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-11 02:28:04,962 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:04,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:04,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:28:04,962 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:04,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1126653610, now seen corresponding path program 1 times [2021-10-11 02:28:04,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:04,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748271013] [2021-10-11 02:28:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:28:05,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748271013] [2021-10-11 02:28:05,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:05,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:05,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759757450] [2021-10-11 02:28:05,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:05,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:05,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:05,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:05,091 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2021-10-11 02:28:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:05,740 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2021-10-11 02:28:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:05,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2021-10-11 02:28:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:05,752 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:28:05,753 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:28:05,755 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 02:28:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:28:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:28:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:28:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2021-10-11 02:28:05,808 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2021-10-11 02:28:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:05,810 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2021-10-11 02:28:05,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2021-10-11 02:28:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-10-11 02:28:05,817 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:05,817 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:05,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:28:05,817 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:05,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1220405761, now seen corresponding path program 1 times [2021-10-11 02:28:05,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:05,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897338503] [2021-10-11 02:28:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:28:05,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897338503] [2021-10-11 02:28:05,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:05,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:05,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418700415] [2021-10-11 02:28:05,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:05,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:05,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:05,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:05,989 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2021-10-11 02:28:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:06,351 INFO L93 Difference]: Finished difference Result 1709 states and 2194 transitions. [2021-10-11 02:28:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:06,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2021-10-11 02:28:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:06,358 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:28:06,358 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:28:06,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:28:06,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:28:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:28:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1015 transitions. [2021-10-11 02:28:06,403 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1015 transitions. Word has length 167 [2021-10-11 02:28:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:06,404 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1015 transitions. [2021-10-11 02:28:06,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1015 transitions. [2021-10-11 02:28:06,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-11 02:28:06,409 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:06,409 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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] [2021-10-11 02:28:06,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:28:06,410 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,411 INFO L82 PathProgramCache]: Analyzing trace with hash 827197727, now seen corresponding path program 1 times [2021-10-11 02:28:06,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:06,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145951078] [2021-10-11 02:28:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-11 02:28:06,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145951078] [2021-10-11 02:28:06,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:06,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:06,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806256908] [2021-10-11 02:28:06,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:06,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:06,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:06,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:06,592 INFO L87 Difference]: Start difference. First operand 784 states and 1015 transitions. Second operand 3 states. [2021-10-11 02:28:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:06,954 INFO L93 Difference]: Finished difference Result 1709 states and 2182 transitions. [2021-10-11 02:28:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:06,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2021-10-11 02:28:06,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:06,960 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:28:06,960 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:28:06,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:28:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-11 02:28:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:28:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2021-10-11 02:28:07,005 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 210 [2021-10-11 02:28:07,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:07,007 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2021-10-11 02:28:07,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2021-10-11 02:28:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-10-11 02:28:07,011 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:07,011 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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] [2021-10-11 02:28:07,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:28:07,012 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1307987520, now seen corresponding path program 1 times [2021-10-11 02:28:07,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:07,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127426391] [2021-10-11 02:28:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 235 proven. 35 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-11 02:28:07,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127426391] [2021-10-11 02:28:07,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178061618] [2021-10-11 02:28:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:07,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:07,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-10-11 02:28:07,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-10-11 02:28:08,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:08,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:28:08,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102868595] [2021-10-11 02:28:08,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:08,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:08,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:08,236 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2021-10-11 02:28:08,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:08,665 INFO L93 Difference]: Finished difference Result 1993 states and 2470 transitions. [2021-10-11 02:28:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:08,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2021-10-11 02:28:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:08,678 INFO L225 Difference]: With dead ends: 1993 [2021-10-11 02:28:08,678 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:28:08,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:28:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2021-10-11 02:28:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:28:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1253 transitions. [2021-10-11 02:28:08,716 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1253 transitions. Word has length 223 [2021-10-11 02:28:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:08,717 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1253 transitions. [2021-10-11 02:28:08,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1253 transitions. [2021-10-11 02:28:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-11 02:28:08,755 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:08,756 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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 02:28:08,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:28:08,973 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:08,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1135210968, now seen corresponding path program 1 times [2021-10-11 02:28:08,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:08,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039014623] [2021-10-11 02:28:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 260 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:28:09,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039014623] [2021-10-11 02:28:09,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359347620] [2021-10-11 02:28:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:09,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-11 02:28:09,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-11 02:28:09,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:09,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:28:09,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130762656] [2021-10-11 02:28:09,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:09,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:09,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:09,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:09,964 INFO L87 Difference]: Start difference. First operand 997 states and 1253 transitions. Second operand 3 states. [2021-10-11 02:28:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:10,379 INFO L93 Difference]: Finished difference Result 1991 states and 2504 transitions. [2021-10-11 02:28:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:10,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2021-10-11 02:28:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:10,381 INFO L225 Difference]: With dead ends: 1991 [2021-10-11 02:28:10,381 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:10,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:10,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:10,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 232 [2021-10-11 02:28:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:10,385 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:10,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:10,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:10,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:28:10,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:10,807 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2021-10-11 02:28:10,927 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2021-10-11 02:28:10,931 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:28:10,931 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:28:10,931 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:28:10,931 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:28:10,932 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:28:10,933 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:28:10,933 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:28:10,933 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:28:10,933 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:28:10,933 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:28:10,933 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:28:10,935 INFO L262 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:28:10,935 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:28:10,935 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:28:10,935 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L543(line 543) no Hoare annotation was computed. [2021-10-11 02:28:10,936 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:28:10,937 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:28:10,938 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:28:10,938 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:10,938 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:28:10,938 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:28:10,938 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:28:10,944 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a20~0 1)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse3 (= ~a17~0 1)) (.cse5 (= ~a16~0 6)) (.cse0 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse1 .cse2 .cse3) (and .cse4 .cse0) (and .cse5 .cse2 .cse3) (and .cse4 .cse3) (and .cse5 .cse0))) [2021-10-11 02:28:10,944 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:28:10,944 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:28:10,944 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:28:10,945 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:28:10,945 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:28:10,945 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:28:10,945 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:28:10,945 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:10,945 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:28:10,945 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:28:10,945 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:28:10,946 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:28:10,947 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:28:10,947 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:28:10,947 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:28:10,947 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:28:10,948 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a20~0 1)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse3 (= ~a17~0 1)) (.cse5 (= ~a16~0 6)) (.cse0 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse1 .cse2 .cse3) (and .cse4 .cse0) (and .cse5 .cse2 .cse3) (and .cse4 .cse3) (and .cse5 .cse0))) [2021-10-11 02:28:10,948 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:28:10,948 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 543) no Hoare annotation was computed. [2021-10-11 02:28:10,948 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:28:10,948 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:28:10,949 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:28:10,949 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:28:10,949 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:28:10,949 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:28:10,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:10 BoogieIcfgContainer [2021-10-11 02:28:10,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:10,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:10,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:10,990 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:10,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:00" (3/4) ... [2021-10-11 02:28:10,994 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:11,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:28:11,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-11 02:28:11,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:28:11,035 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:28:11,174 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fe95dcc-2ccd-4cf9-ae73-01d3f841ea0f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:11,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:11,175 INFO L168 Benchmark]: Toolchain (without parser) took 14266.44 ms. Allocated memory was 102.8 MB in the beginning and 323.0 MB in the end (delta: 220.2 MB). Free memory was 70.1 MB in the beginning and 204.6 MB in the end (delta: -134.4 MB). Peak memory consumption was 84.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,176 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:11,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.55 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 62.4 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.28 ms. Allocated memory is still 102.8 MB. Free memory was 62.4 MB in the beginning and 56.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,179 INFO L168 Benchmark]: Boogie Preprocessor took 107.30 ms. Allocated memory is still 102.8 MB. Free memory was 56.8 MB in the beginning and 52.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,180 INFO L168 Benchmark]: RCFGBuilder took 2406.72 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 64.2 MB in the end (delta: -12.0 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,180 INFO L168 Benchmark]: TraceAbstraction took 10790.36 ms. Allocated memory was 125.8 MB in the beginning and 323.0 MB in the end (delta: 197.1 MB). Free memory was 64.2 MB in the beginning and 220.3 MB in the end (delta: -156.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,181 INFO L168 Benchmark]: Witness Printer took 186.07 ms. Allocated memory is still 323.0 MB. Free memory was 219.2 MB in the beginning and 204.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 634.55 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 62.4 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.28 ms. Allocated memory is still 102.8 MB. Free memory was 62.4 MB in the beginning and 56.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.30 ms. Allocated memory is still 102.8 MB. Free memory was 56.8 MB in the beginning and 52.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2406.72 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 64.2 MB in the end (delta: -12.0 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10790.36 ms. Allocated memory was 125.8 MB in the beginning and 323.0 MB in the end (delta: 197.1 MB). Free memory was 64.2 MB in the beginning and 220.3 MB in the end (delta: -156.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. * Witness Printer took 186.07 ms. Allocated memory is still 323.0 MB. Free memory was 219.2 MB in the beginning and 204.6 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: 543]: 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: ((((((a17 <= 0 && a20 == 1) && !(a7 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 <= 0)) || ((a16 == 6 && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 == 1)) || (a16 == 6 && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a17 <= 0 && a20 == 1) && !(a7 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 <= 0)) || ((a16 == 6 && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 == 1)) || (a16 == 6 && a17 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.3s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 450 SDtfs, 966 SDslu, 59 SDs, 0 SdLazy, 2594 SolverSat, 668 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 942 GetRequests, 918 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=9, 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, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4088 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 174 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1871 NumberOfCodeBlocks, 1871 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2312 ConstructedInterpolants, 0 QuantifiedInterpolants, 1165240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1108 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 3014/3104 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...