./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH --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 804a6f1d000a9eac5cab22029525644887c7b13b33bf8b82b475e09952d467ca --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:47:51,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:47:51,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:47:51,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:47:51,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:47:51,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:47:51,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:47:51,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:47:51,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:47:51,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:47:51,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:47:51,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:47:51,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:47:51,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:47:51,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:47:51,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:47:51,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:47:51,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:47:51,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:47:51,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:47:51,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:47:51,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:47:51,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:47:51,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:47:51,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:47:51,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:47:51,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:47:51,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:47:51,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:47:51,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:47:51,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:47:51,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:47:51,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:47:51,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:47:51,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:47:51,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:47:51,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:47:51,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:47:51,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:47:51,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:47:51,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:47:51,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:47:51,539 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:47:51,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:47:51,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:47:51,540 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:47:51,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:47:51,541 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:47:51,541 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:47:51,541 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:47:51,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:47:51,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:47:51,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:47:51,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:47:51,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:47:51,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:47:51,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:47:51,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:47:51,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:47:51,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:47:51,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:47:51,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:47:51,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:47:51,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:47:51,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:47:51,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:47:51,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:47:51,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:47:51,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:47:51,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:47:51,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:47:51,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:47:51,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:47:51,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:47:51,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:47:51,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:47:51,547 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:47:51,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:47:51,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:47:51,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:47:51,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:47:51,548 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_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804a6f1d000a9eac5cab22029525644887c7b13b33bf8b82b475e09952d467ca [2021-11-03 03:47:51,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:47:51,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:47:51,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:47:51,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:47:51,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:47:51,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2021-11-03 03:47:51,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/data/b46e4d0c0/7e924c98ec1c4bc485837cd8aa816580/FLAG043482a1f [2021-11-03 03:47:52,415 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:47:52,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2021-11-03 03:47:52,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/data/b46e4d0c0/7e924c98ec1c4bc485837cd8aa816580/FLAG043482a1f [2021-11-03 03:47:52,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/data/b46e4d0c0/7e924c98ec1c4bc485837cd8aa816580 [2021-11-03 03:47:52,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:47:52,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:47:52,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:47:52,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:47:52,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:47:52,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:52" (1/1) ... [2021-11-03 03:47:52,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0dbb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:52, skipping insertion in model container [2021-11-03 03:47:52,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:52" (1/1) ... [2021-11-03 03:47:52,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:47:52,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:47:53,038 WARN L228 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_b91a4e6f-23b8-42ba-a141-d297866cd9a4/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4837,4850] [2021-11-03 03:47:53,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:47:53,051 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:47:53,120 WARN L228 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_b91a4e6f-23b8-42ba-a141-d297866cd9a4/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4837,4850] [2021-11-03 03:47:53,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:47:53,140 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:47:53,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53 WrapperNode [2021-11-03 03:47:53,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:47:53,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:47:53,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:47:53,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:47:53,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:47:53,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:47:53,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:47:53,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:47:53,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:47:53,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:47:53,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:47:53,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:47:53,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (1/1) ... [2021-11-03 03:47:53,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:47:53,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:47:53,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:47:53,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91a4e6f-23b8-42ba-a141-d297866cd9a4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:47:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:47:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:47:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:47:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-03 03:47:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-03 03:47:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-03 03:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-03 03:47:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-03 03:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-03 03:47:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-03 03:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-03 03:47:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:47:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-11-03 03:47:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-11-03 03:47:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-11-03 03:47:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-11-03 03:47:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-11-03 03:47:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-11-03 03:47:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-03 03:47:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-03 03:47:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:47:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:47:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:47:53,364 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-03 03:47:54,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:47:54,296 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-11-03 03:47:54,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:54 BoogieIcfgContainer [2021-11-03 03:47:54,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:47:54,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:47:54,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:47:54,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:47:54,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:47:52" (1/3) ... [2021-11-03 03:47:54,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8d9c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:54, skipping insertion in model container [2021-11-03 03:47:54,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:53" (2/3) ... [2021-11-03 03:47:54,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8d9c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:54, skipping insertion in model container [2021-11-03 03:47:54,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:54" (3/3) ... [2021-11-03 03:47:54,308 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2021-11-03 03:47:54,314 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-03 03:47:54,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:47:54,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:47:54,315 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-03 03:47:54,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,373 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,374 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,374 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,374 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,377 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,377 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,378 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,384 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,385 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,386 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,386 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,386 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,386 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,387 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,387 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,387 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,389 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,390 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,390 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,391 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,392 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,392 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,392 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,392 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,393 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,393 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,394 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,394 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,394 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,395 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,396 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork6_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,396 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,396 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork6_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,396 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,397 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,397 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,397 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,398 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,401 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,401 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,404 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,404 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,404 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,404 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,404 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,404 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,405 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,405 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,405 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,406 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,407 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,410 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,411 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,412 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,412 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,412 WARN L313 ript$VariableManager]: TermVariabe thread7Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,413 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,413 WARN L313 ript$VariableManager]: TermVariabe thread7Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,414 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,414 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,419 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,419 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,420 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,420 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,424 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,424 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,424 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,424 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,430 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,431 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,431 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,431 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,431 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,432 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,439 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,440 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,440 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,440 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,440 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,440 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,442 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,443 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,443 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,443 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,443 WARN L313 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,444 WARN L313 ript$VariableManager]: TermVariabe thread7Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,446 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,449 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,449 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork6_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,449 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,450 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,450 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,450 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork6_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:47:54,474 INFO L148 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-11-03 03:47:54,531 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:47:54,542 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:47:54,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-03 03:47:54,562 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-03 03:47:54,573 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 203 transitions, 462 flow [2021-11-03 03:47:54,576 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 203 transitions, 462 flow [2021-11-03 03:47:54,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 223 places, 203 transitions, 462 flow [2021-11-03 03:47:54,701 INFO L129 PetriNetUnfolder]: 2/196 cut-off events. [2021-11-03 03:47:54,704 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-03 03:47:54,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 196 events. 2/196 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2021-11-03 03:47:54,719 INFO L116 LiptonReduction]: Number of co-enabled transitions 4182 [2021-11-03 03:48:08,816 INFO L131 LiptonReduction]: Checked pairs total: 10570 [2021-11-03 03:48:08,816 INFO L133 LiptonReduction]: Total number of compositions: 163 [2021-11-03 03:48:08,824 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 52 transitions, 160 flow [2021-11-03 03:48:09,665 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10932 states, 10931 states have (on average 5.001738175830208) internal successors, (54674), 10931 states have internal predecessors, (54674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 10932 states, 10931 states have (on average 5.001738175830208) internal successors, (54674), 10931 states have internal predecessors, (54674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:09,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:09,815 INFO L513 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] [2021-11-03 03:48:09,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:09,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2001286709, now seen corresponding path program 1 times [2021-11-03 03:48:09,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:09,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871501098] [2021-11-03 03:48:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:09,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:10,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:10,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871501098] [2021-11-03 03:48:10,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871501098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:10,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:10,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 03:48:10,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630533939] [2021-11-03 03:48:10,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:48:10,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:48:10,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:48:10,876 INFO L87 Difference]: Start difference. First operand has 10932 states, 10931 states have (on average 5.001738175830208) internal successors, (54674), 10931 states have internal predecessors, (54674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:12,121 INFO L93 Difference]: Finished difference Result 30994 states and 150241 transitions. [2021-11-03 03:48:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:48:12,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:12,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:12,775 INFO L225 Difference]: With dead ends: 30994 [2021-11-03 03:48:12,776 INFO L226 Difference]: Without dead ends: 30994 [2021-11-03 03:48:12,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:48:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30994 states. [2021-11-03 03:48:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30994 to 20922. [2021-11-03 03:48:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20922 states, 20921 states have (on average 4.888102863151857) internal successors, (102264), 20921 states have internal predecessors, (102264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20922 states to 20922 states and 102264 transitions. [2021-11-03 03:48:15,012 INFO L78 Accepts]: Start accepts. Automaton has 20922 states and 102264 transitions. Word has length 44 [2021-11-03 03:48:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:15,013 INFO L470 AbstractCegarLoop]: Abstraction has 20922 states and 102264 transitions. [2021-11-03 03:48:15,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 20922 states and 102264 transitions. [2021-11-03 03:48:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:15,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:15,357 INFO L513 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] [2021-11-03 03:48:15,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:48:15,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1995030599, now seen corresponding path program 2 times [2021-11-03 03:48:15,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:15,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506350720] [2021-11-03 03:48:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:15,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:16,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:16,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506350720] [2021-11-03 03:48:16,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506350720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:16,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:16,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:48:16,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334839869] [2021-11-03 03:48:16,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:48:16,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:16,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:48:16,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:48:16,310 INFO L87 Difference]: Start difference. First operand 20922 states and 102264 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:17,545 INFO L93 Difference]: Finished difference Result 34413 states and 164977 transitions. [2021-11-03 03:48:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:48:17,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:17,841 INFO L225 Difference]: With dead ends: 34413 [2021-11-03 03:48:17,842 INFO L226 Difference]: Without dead ends: 28906 [2021-11-03 03:48:17,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:48:18,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28906 states. [2021-11-03 03:48:19,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28906 to 28906. [2021-11-03 03:48:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28906 states, 28905 states have (on average 4.8102404428299605) internal successors, (139040), 28905 states have internal predecessors, (139040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28906 states to 28906 states and 139040 transitions. [2021-11-03 03:48:19,817 INFO L78 Accepts]: Start accepts. Automaton has 28906 states and 139040 transitions. Word has length 44 [2021-11-03 03:48:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:19,818 INFO L470 AbstractCegarLoop]: Abstraction has 28906 states and 139040 transitions. [2021-11-03 03:48:19,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 28906 states and 139040 transitions. [2021-11-03 03:48:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:20,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:20,094 INFO L513 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] [2021-11-03 03:48:20,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:48:20,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2016568009, now seen corresponding path program 3 times [2021-11-03 03:48:20,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:20,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925131268] [2021-11-03 03:48:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:20,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:20,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:20,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925131268] [2021-11-03 03:48:20,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925131268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:20,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:20,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 03:48:20,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122738909] [2021-11-03 03:48:20,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:48:20,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:48:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:48:20,321 INFO L87 Difference]: Start difference. First operand 28906 states and 139040 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:21,089 INFO L93 Difference]: Finished difference Result 46694 states and 218797 transitions. [2021-11-03 03:48:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:48:21,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:21,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:21,378 INFO L225 Difference]: With dead ends: 46694 [2021-11-03 03:48:21,379 INFO L226 Difference]: Without dead ends: 46662 [2021-11-03 03:48:21,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:48:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46662 states. [2021-11-03 03:48:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46662 to 37008. [2021-11-03 03:48:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37008 states, 37007 states have (on average 4.739292566271246) internal successors, (175387), 37007 states have internal predecessors, (175387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37008 states to 37008 states and 175387 transitions. [2021-11-03 03:48:23,468 INFO L78 Accepts]: Start accepts. Automaton has 37008 states and 175387 transitions. Word has length 44 [2021-11-03 03:48:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:23,469 INFO L470 AbstractCegarLoop]: Abstraction has 37008 states and 175387 transitions. [2021-11-03 03:48:23,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 37008 states and 175387 transitions. [2021-11-03 03:48:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:23,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:23,961 INFO L513 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] [2021-11-03 03:48:23,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:48:23,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash -566788269, now seen corresponding path program 4 times [2021-11-03 03:48:23,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:23,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50755611] [2021-11-03 03:48:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:23,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:24,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:24,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50755611] [2021-11-03 03:48:24,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50755611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:24,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:24,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:48:24,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13250862] [2021-11-03 03:48:24,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:48:24,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:48:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:48:24,300 INFO L87 Difference]: Start difference. First operand 37008 states and 175387 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:25,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:25,245 INFO L93 Difference]: Finished difference Result 66946 states and 306841 transitions. [2021-11-03 03:48:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:48:25,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:25,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:26,101 INFO L225 Difference]: With dead ends: 66946 [2021-11-03 03:48:26,101 INFO L226 Difference]: Without dead ends: 66898 [2021-11-03 03:48:26,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:48:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66898 states. [2021-11-03 03:48:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66898 to 48060. [2021-11-03 03:48:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48060 states, 48059 states have (on average 4.6790611539982105) internal successors, (224871), 48059 states have internal predecessors, (224871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48060 states to 48060 states and 224871 transitions. [2021-11-03 03:48:28,543 INFO L78 Accepts]: Start accepts. Automaton has 48060 states and 224871 transitions. Word has length 44 [2021-11-03 03:48:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:28,543 INFO L470 AbstractCegarLoop]: Abstraction has 48060 states and 224871 transitions. [2021-11-03 03:48:28,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 48060 states and 224871 transitions. [2021-11-03 03:48:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:28,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:28,682 INFO L513 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] [2021-11-03 03:48:28,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:48:28,682 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 968524813, now seen corresponding path program 5 times [2021-11-03 03:48:28,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:28,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815236201] [2021-11-03 03:48:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:28,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:28,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:28,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815236201] [2021-11-03 03:48:28,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815236201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:28,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:28,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 03:48:28,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567332830] [2021-11-03 03:48:28,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:48:28,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:48:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:48:28,940 INFO L87 Difference]: Start difference. First operand 48060 states and 224871 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:30,508 INFO L93 Difference]: Finished difference Result 70890 states and 321685 transitions. [2021-11-03 03:48:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:48:30,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:30,865 INFO L225 Difference]: With dead ends: 70890 [2021-11-03 03:48:30,866 INFO L226 Difference]: Without dead ends: 70826 [2021-11-03 03:48:30,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:48:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70826 states. [2021-11-03 03:48:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70826 to 55238. [2021-11-03 03:48:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55238 states, 55237 states have (on average 4.637561779242175) internal successors, (256165), 55237 states have internal predecessors, (256165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55238 states to 55238 states and 256165 transitions. [2021-11-03 03:48:33,739 INFO L78 Accepts]: Start accepts. Automaton has 55238 states and 256165 transitions. Word has length 44 [2021-11-03 03:48:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:33,740 INFO L470 AbstractCegarLoop]: Abstraction has 55238 states and 256165 transitions. [2021-11-03 03:48:33,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 55238 states and 256165 transitions. [2021-11-03 03:48:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:34,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:34,495 INFO L513 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] [2021-11-03 03:48:34,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:48:34,497 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1748571795, now seen corresponding path program 6 times [2021-11-03 03:48:34,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:34,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126774964] [2021-11-03 03:48:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:34,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:34,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:34,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126774964] [2021-11-03 03:48:34,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126774964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:34,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:34,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 03:48:34,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310930773] [2021-11-03 03:48:34,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:48:34,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:48:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:48:34,969 INFO L87 Difference]: Start difference. First operand 55238 states and 256165 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:35,977 INFO L93 Difference]: Finished difference Result 68754 states and 311899 transitions. [2021-11-03 03:48:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:48:35,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:36,891 INFO L225 Difference]: With dead ends: 68754 [2021-11-03 03:48:36,907 INFO L226 Difference]: Without dead ends: 68670 [2021-11-03 03:48:36,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:48:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68670 states. [2021-11-03 03:48:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68670 to 58572. [2021-11-03 03:48:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58572 states, 58571 states have (on average 4.610745932287309) internal successors, (270056), 58571 states have internal predecessors, (270056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58572 states to 58572 states and 270056 transitions. [2021-11-03 03:48:39,467 INFO L78 Accepts]: Start accepts. Automaton has 58572 states and 270056 transitions. Word has length 44 [2021-11-03 03:48:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:39,468 INFO L470 AbstractCegarLoop]: Abstraction has 58572 states and 270056 transitions. [2021-11-03 03:48:39,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 58572 states and 270056 transitions. [2021-11-03 03:48:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:39,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:39,634 INFO L513 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] [2021-11-03 03:48:39,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:48:39,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:39,635 INFO L85 PathProgramCache]: Analyzing trace with hash 932128577, now seen corresponding path program 7 times [2021-11-03 03:48:39,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:39,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226925884] [2021-11-03 03:48:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:39,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:39,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:39,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226925884] [2021-11-03 03:48:39,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226925884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:39,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:39,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 03:48:39,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141431584] [2021-11-03 03:48:39,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:48:39,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:48:39,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:48:39,848 INFO L87 Difference]: Start difference. First operand 58572 states and 270056 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:41,592 INFO L93 Difference]: Finished difference Result 79698 states and 356502 transitions. [2021-11-03 03:48:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:48:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:41,929 INFO L225 Difference]: With dead ends: 79698 [2021-11-03 03:48:41,929 INFO L226 Difference]: Without dead ends: 79534 [2021-11-03 03:48:41,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:48:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79534 states. [2021-11-03 03:48:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79534 to 62802. [2021-11-03 03:48:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62802 states, 62801 states have (on average 4.581439785990669) internal successors, (287719), 62801 states have internal predecessors, (287719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62802 states to 62802 states and 287719 transitions. [2021-11-03 03:48:45,485 INFO L78 Accepts]: Start accepts. Automaton has 62802 states and 287719 transitions. Word has length 44 [2021-11-03 03:48:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:45,485 INFO L470 AbstractCegarLoop]: Abstraction has 62802 states and 287719 transitions. [2021-11-03 03:48:45,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 62802 states and 287719 transitions. [2021-11-03 03:48:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:45,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:45,705 INFO L513 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] [2021-11-03 03:48:45,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 03:48:45,705 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:45,705 INFO L85 PathProgramCache]: Analyzing trace with hash -950032137, now seen corresponding path program 8 times [2021-11-03 03:48:45,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:45,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431082985] [2021-11-03 03:48:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:45,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:46,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:46,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431082985] [2021-11-03 03:48:46,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431082985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:46,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:46,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:48:46,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881299830] [2021-11-03 03:48:46,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:48:46,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:48:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:48:46,707 INFO L87 Difference]: Start difference. First operand 62802 states and 287719 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:48,062 INFO L93 Difference]: Finished difference Result 88758 states and 393165 transitions. [2021-11-03 03:48:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:48:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:48,636 INFO L225 Difference]: With dead ends: 88758 [2021-11-03 03:48:48,636 INFO L226 Difference]: Without dead ends: 88490 [2021-11-03 03:48:48,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:48:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88490 states. [2021-11-03 03:48:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88490 to 67768. [2021-11-03 03:48:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67768 states, 67767 states have (on average 4.536263963285965) internal successors, (307409), 67767 states have internal predecessors, (307409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67768 states to 67768 states and 307409 transitions. [2021-11-03 03:48:52,367 INFO L78 Accepts]: Start accepts. Automaton has 67768 states and 307409 transitions. Word has length 44 [2021-11-03 03:48:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:52,367 INFO L470 AbstractCegarLoop]: Abstraction has 67768 states and 307409 transitions. [2021-11-03 03:48:52,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 67768 states and 307409 transitions. [2021-11-03 03:48:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:52,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:52,562 INFO L513 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] [2021-11-03 03:48:52,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 03:48:52,562 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash -179185489, now seen corresponding path program 9 times [2021-11-03 03:48:52,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:52,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502145791] [2021-11-03 03:48:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:52,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:53,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:53,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502145791] [2021-11-03 03:48:53,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502145791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:53,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:53,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:48:53,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541312601] [2021-11-03 03:48:53,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:48:53,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:48:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:48:53,600 INFO L87 Difference]: Start difference. First operand 67768 states and 307409 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:55,136 INFO L93 Difference]: Finished difference Result 91610 states and 403247 transitions. [2021-11-03 03:48:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:48:55,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:48:55,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:55,555 INFO L225 Difference]: With dead ends: 91610 [2021-11-03 03:48:55,555 INFO L226 Difference]: Without dead ends: 91286 [2021-11-03 03:48:55,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:48:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91286 states. [2021-11-03 03:48:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91286 to 71002. [2021-11-03 03:48:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71002 states, 71001 states have (on average 4.504612611089985) internal successors, (319832), 71001 states have internal predecessors, (319832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71002 states to 71002 states and 319832 transitions. [2021-11-03 03:48:59,235 INFO L78 Accepts]: Start accepts. Automaton has 71002 states and 319832 transitions. Word has length 44 [2021-11-03 03:48:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:59,235 INFO L470 AbstractCegarLoop]: Abstraction has 71002 states and 319832 transitions. [2021-11-03 03:48:59,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 71002 states and 319832 transitions. [2021-11-03 03:48:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:48:59,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:59,413 INFO L513 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] [2021-11-03 03:48:59,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 03:48:59,414 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-03 03:48:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash 320421361, now seen corresponding path program 10 times [2021-11-03 03:48:59,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:59,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873767458] [2021-11-03 03:48:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:59,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms