./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i --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_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/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_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/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_205f527d-a287-4f3e-ba5b-2a4ef36bab85/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 882ea361b7af061cd8d42e5cfb7b075ce7064afa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:09,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:09,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:09,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:09,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:09,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:09,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:09,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:09,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:09,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:09,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:09,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:09,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:09,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:09,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:09,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:09,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:09,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:09,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:09,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:09,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:09,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:09,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:09,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:09,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:09,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:09,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:09,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:09,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:09,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:09,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:09,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:09,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:09,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:09,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:09,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:09,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:09,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:09,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:09,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:09,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:09,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:09,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:09,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:09,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:09,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:09,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:09,437 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:09,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:09,437 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:09,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:09,438 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:09,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:09,440 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:09,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:09,440 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:09,441 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:09,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:09,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:09,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:09,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:09,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:09,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:09,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:09,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:09,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:09,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:09,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:09,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:09,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:09,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:09,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:09,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:09,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:09,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:09,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:09,449 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:09,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:09,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:09,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:09,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:09,451 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_205f527d-a287-4f3e-ba5b-2a4ef36bab85/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 882ea361b7af061cd8d42e5cfb7b075ce7064afa [2021-10-11 02:24:09,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:09,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:09,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:09,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:09,793 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:09,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2021-10-11 02:24:09,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/data/35d43db37/a56d7c7eddc34dd4b0eef7cd4d5a1230/FLAG865eb2d65 [2021-10-11 02:24:10,502 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:10,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2021-10-11 02:24:10,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/data/35d43db37/a56d7c7eddc34dd4b0eef7cd4d5a1230/FLAG865eb2d65 [2021-10-11 02:24:10,749 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/data/35d43db37/a56d7c7eddc34dd4b0eef7cd4d5a1230 [2021-10-11 02:24:10,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:10,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:10,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:10,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:10,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:10,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:10" (1/1) ... [2021-10-11 02:24:10,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ade8ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:10, skipping insertion in model container [2021-10-11 02:24:10,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:10" (1/1) ... [2021-10-11 02:24:10,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:10,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:11,043 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_205f527d-a287-4f3e-ba5b-2a4ef36bab85/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-10-11 02:24:11,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:11,326 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:11,341 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_205f527d-a287-4f3e-ba5b-2a4ef36bab85/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-10-11 02:24:11,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:11,487 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:11,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11 WrapperNode [2021-10-11 02:24:11,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:11,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:11,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:11,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:11,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:11,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:11,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:11,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:11,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... [2021-10-11 02:24:11,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:11,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:11,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:11,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:11,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:24:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:24:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:11,684 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:24:11,684 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:24:11,685 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:24:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:24:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:24:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:24:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:24:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:11,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:11,689 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:24:12,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:12,175 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:24:12,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:12 BoogieIcfgContainer [2021-10-11 02:24:12,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:12,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:12,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:12,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:12,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:10" (1/3) ... [2021-10-11 02:24:12,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b29ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:12, skipping insertion in model container [2021-10-11 02:24:12,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:11" (2/3) ... [2021-10-11 02:24:12,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b29ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:12, skipping insertion in model container [2021-10-11 02:24:12,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:12" (3/3) ... [2021-10-11 02:24:12,186 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-10-11 02:24:12,201 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:24:12,201 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:12,205 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:12,206 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:24:12,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,238 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,238 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,240 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,242 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,251 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:12,256 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:24:12,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:24:12,284 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:12,285 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:12,285 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:12,285 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:12,285 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:12,285 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:12,285 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:12,286 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:12,298 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:24:12,300 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 02:24:12,303 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 02:24:12,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-10-11 02:24:12,348 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-10-11 02:24:12,348 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:24:12,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-10-11 02:24:12,355 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-10-11 02:24:15,567 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-10-11 02:24:15,685 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-10-11 02:24:15,903 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-10-11 02:24:15,998 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2021-10-11 02:24:15,999 INFO L133 LiptonReduction]: Total number of compositions: 59 [2021-10-11 02:24:16,005 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-11 02:24:16,038 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-10-11 02:24:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-10-11 02:24:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:16,048 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:16,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:16,049 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2021-10-11 02:24:16,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:16,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63389587] [2021-10-11 02:24:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:16,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63389587] [2021-10-11 02:24:16,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:16,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:16,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443791842] [2021-10-11 02:24:16,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:24:16,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:24:16,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:16,277 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-10-11 02:24:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:16,311 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-10-11 02:24:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:24:16,313 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:24:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:16,331 INFO L225 Difference]: With dead ends: 362 [2021-10-11 02:24:16,331 INFO L226 Difference]: Without dead ends: 298 [2021-10-11 02:24:16,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-11 02:24:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-11 02:24:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-10-11 02:24:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-11 02:24:16,411 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-11 02:24:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:16,412 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-11 02:24:16,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:24:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-11 02:24:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:16,415 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:16,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:16,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:16,415 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:16,416 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2021-10-11 02:24:16,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:16,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404021506] [2021-10-11 02:24:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:16,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404021506] [2021-10-11 02:24:16,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:16,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:16,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948903291] [2021-10-11 02:24:16,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:16,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:16,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:16,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:16,625 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-10-11 02:24:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:16,659 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2021-10-11 02:24:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:16,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:24:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:16,663 INFO L225 Difference]: With dead ends: 330 [2021-10-11 02:24:16,663 INFO L226 Difference]: Without dead ends: 266 [2021-10-11 02:24:16,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:24:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-11 02:24:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-11 02:24:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-10-11 02:24:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2021-10-11 02:24:16,687 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2021-10-11 02:24:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:16,688 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2021-10-11 02:24:16,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2021-10-11 02:24:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:24:16,690 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:16,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:16,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:16,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2021-10-11 02:24:16,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:16,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798116744] [2021-10-11 02:24:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:16,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798116744] [2021-10-11 02:24:16,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:16,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:16,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202048483] [2021-10-11 02:24:16,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:16,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:16,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:16,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:16,843 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2021-10-11 02:24:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:16,919 INFO L93 Difference]: Finished difference Result 414 states and 1086 transitions. [2021-10-11 02:24:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:24:16,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:24:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:16,923 INFO L225 Difference]: With dead ends: 414 [2021-10-11 02:24:16,924 INFO L226 Difference]: Without dead ends: 330 [2021-10-11 02:24:16,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-11 02:24:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 286. [2021-10-11 02:24:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2021-10-11 02:24:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 766 transitions. [2021-10-11 02:24:16,965 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 766 transitions. Word has length 10 [2021-10-11 02:24:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:16,965 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 766 transitions. [2021-10-11 02:24:16,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 766 transitions. [2021-10-11 02:24:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:24:16,973 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:16,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:16,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:16,974 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash -259726332, now seen corresponding path program 1 times [2021-10-11 02:24:16,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:16,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874942739] [2021-10-11 02:24:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:17,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874942739] [2021-10-11 02:24:17,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:17,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:17,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24044592] [2021-10-11 02:24:17,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:17,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:17,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:17,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:17,089 INFO L87 Difference]: Start difference. First operand 286 states and 766 transitions. Second operand 5 states. [2021-10-11 02:24:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:17,144 INFO L93 Difference]: Finished difference Result 410 states and 1076 transitions. [2021-10-11 02:24:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:17,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:24:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:17,151 INFO L225 Difference]: With dead ends: 410 [2021-10-11 02:24:17,151 INFO L226 Difference]: Without dead ends: 220 [2021-10-11 02:24:17,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-11 02:24:17,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-10-11 02:24:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2021-10-11 02:24:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 576 transitions. [2021-10-11 02:24:17,164 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 576 transitions. Word has length 12 [2021-10-11 02:24:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:17,173 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 576 transitions. [2021-10-11 02:24:17,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 576 transitions. [2021-10-11 02:24:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:24:17,175 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:17,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:17,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:17,176 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2021-10-11 02:24:17,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:17,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398697917] [2021-10-11 02:24:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:17,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398697917] [2021-10-11 02:24:17,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:17,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:17,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737457138] [2021-10-11 02:24:17,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:17,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:17,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:17,281 INFO L87 Difference]: Start difference. First operand 220 states and 576 transitions. Second operand 5 states. [2021-10-11 02:24:17,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:17,399 INFO L93 Difference]: Finished difference Result 336 states and 830 transitions. [2021-10-11 02:24:17,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:17,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:24:17,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:17,402 INFO L225 Difference]: With dead ends: 336 [2021-10-11 02:24:17,402 INFO L226 Difference]: Without dead ends: 164 [2021-10-11 02:24:17,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-11 02:24:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 140. [2021-10-11 02:24:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-10-11 02:24:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 338 transitions. [2021-10-11 02:24:17,409 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 338 transitions. Word has length 12 [2021-10-11 02:24:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:17,409 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 338 transitions. [2021-10-11 02:24:17,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 338 transitions. [2021-10-11 02:24:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:24:17,411 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:17,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:17,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:17,411 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:17,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1622661680, now seen corresponding path program 2 times [2021-10-11 02:24:17,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:17,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121489108] [2021-10-11 02:24:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:17,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121489108] [2021-10-11 02:24:17,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:17,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:17,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992704952] [2021-10-11 02:24:17,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:17,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:17,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:17,520 INFO L87 Difference]: Start difference. First operand 140 states and 338 transitions. Second operand 5 states. [2021-10-11 02:24:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:17,571 INFO L93 Difference]: Finished difference Result 176 states and 412 transitions. [2021-10-11 02:24:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:17,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:24:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:17,573 INFO L225 Difference]: With dead ends: 176 [2021-10-11 02:24:17,573 INFO L226 Difference]: Without dead ends: 80 [2021-10-11 02:24:17,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-11 02:24:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-11 02:24:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-10-11 02:24:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2021-10-11 02:24:17,577 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2021-10-11 02:24:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:17,578 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2021-10-11 02:24:17,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2021-10-11 02:24:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:24:17,579 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:17,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:17,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:17,580 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 1 times [2021-10-11 02:24:17,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:17,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642576579] [2021-10-11 02:24:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:17,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642576579] [2021-10-11 02:24:17,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:17,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:17,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689293486] [2021-10-11 02:24:17,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:17,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:17,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:17,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:17,658 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2021-10-11 02:24:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:17,689 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2021-10-11 02:24:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:17,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 02:24:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:17,691 INFO L225 Difference]: With dead ends: 91 [2021-10-11 02:24:17,691 INFO L226 Difference]: Without dead ends: 69 [2021-10-11 02:24:17,691 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 02:24:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-11 02:24:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-11 02:24:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-10-11 02:24:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2021-10-11 02:24:17,694 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2021-10-11 02:24:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:17,695 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2021-10-11 02:24:17,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2021-10-11 02:24:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:24:17,695 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:17,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:17,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:17,696 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:17,696 INFO L82 PathProgramCache]: Analyzing trace with hash 182443752, now seen corresponding path program 1 times [2021-10-11 02:24:17,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:17,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358250822] [2021-10-11 02:24:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:17,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358250822] [2021-10-11 02:24:17,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:17,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:17,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130056051] [2021-10-11 02:24:17,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:17,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:17,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:17,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:17,744 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2021-10-11 02:24:17,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:17,784 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2021-10-11 02:24:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:24:17,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:24:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:17,786 INFO L225 Difference]: With dead ends: 65 [2021-10-11 02:24:17,786 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 02:24:17,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:17,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 02:24:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-11 02:24:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 02:24:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2021-10-11 02:24:17,788 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2021-10-11 02:24:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:17,788 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2021-10-11 02:24:17,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2021-10-11 02:24:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:24:17,789 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:17,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:17,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:24:17,789 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:17,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1015325315, now seen corresponding path program 1 times [2021-10-11 02:24:17,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:17,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458436620] [2021-10-11 02:24:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:17,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458436620] [2021-10-11 02:24:17,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:17,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:17,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103524173] [2021-10-11 02:24:17,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:17,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:17,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:17,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:17,846 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2021-10-11 02:24:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:17,896 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2021-10-11 02:24:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:24:17,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-10-11 02:24:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:17,898 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:24:17,899 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:24:17,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:24:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-11 02:24:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:24:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2021-10-11 02:24:17,901 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2021-10-11 02:24:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:17,901 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2021-10-11 02:24:17,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2021-10-11 02:24:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:24:17,902 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:17,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:17,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:24:17,902 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:17,902 INFO L82 PathProgramCache]: Analyzing trace with hash 719368643, now seen corresponding path program 1 times [2021-10-11 02:24:17,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:17,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529960318] [2021-10-11 02:24:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:17,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529960318] [2021-10-11 02:24:17,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:17,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:17,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225157256] [2021-10-11 02:24:17,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:17,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:17,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:17,999 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2021-10-11 02:24:18,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:18,030 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-10-11 02:24:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:18,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-10-11 02:24:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:18,031 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:24:18,031 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:18,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:18,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:18,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-11 02:24:18,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:18,036 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:18,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:18,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:18,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:24:18,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:18 BasicIcfg [2021-10-11 02:24:18,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:18,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:18,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:18,041 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:18,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:12" (3/4) ... [2021-10-11 02:24:18,044 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:18,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:24:18,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:24:18,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:24:18,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:24:18,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:18,059 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:18,059 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:18,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_205f527d-a287-4f3e-ba5b-2a4ef36bab85/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:18,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:18,117 INFO L168 Benchmark]: Toolchain (without parser) took 7361.89 ms. Allocated memory was 111.1 MB in the beginning and 201.3 MB in the end (delta: 90.2 MB). Free memory was 82.1 MB in the beginning and 84.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 86.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:18,117 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 111.1 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:18,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.58 ms. Allocated memory is still 111.1 MB. Free memory was 81.8 MB in the beginning and 65.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:18,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 111.1 MB. Free memory was 65.7 MB in the beginning and 63.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:18,119 INFO L168 Benchmark]: Boogie Preprocessor took 30.36 ms. Allocated memory is still 111.1 MB. Free memory was 63.6 MB in the beginning and 62.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:18,120 INFO L168 Benchmark]: RCFGBuilder took 603.84 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 102.8 MB in the end (delta: -40.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:18,120 INFO L168 Benchmark]: TraceAbstraction took 5860.73 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 102.5 MB in the beginning and 86.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 82.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:18,121 INFO L168 Benchmark]: Witness Printer took 75.28 ms. Allocated memory is still 201.3 MB. Free memory was 86.8 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:18,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 111.1 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 733.58 ms. Allocated memory is still 111.1 MB. Free memory was 81.8 MB in the beginning and 65.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 111.1 MB. Free memory was 65.7 MB in the beginning and 63.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.36 ms. Allocated memory is still 111.1 MB. Free memory was 63.6 MB in the beginning and 62.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 603.84 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 102.8 MB in the end (delta: -40.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5860.73 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 102.5 MB in the beginning and 86.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 82.8 MB. Max. memory is 16.1 GB. * Witness Printer took 75.28 ms. Allocated memory is still 201.3 MB. Free memory was 86.8 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 722 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 MoverChecksTotal - PositiveResult [Line: 18]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 223 SDtfs, 209 SDslu, 354 SDs, 0 SdLazy, 173 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 68 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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...