./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8 --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 6a66ef092b36e94b4e069e977f939a612176fcaf .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:00:53,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:00:53,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:00:53,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:00:53,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:00:53,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:00:53,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:00:53,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:00:53,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:00:53,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:00:53,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:00:53,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:00:53,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:00:53,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:00:53,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:00:53,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:00:53,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:00:53,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:00:53,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:00:53,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:00:53,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:00:53,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:00:53,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:00:53,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:00:53,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:00:53,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:00:53,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:00:53,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:00:53,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:00:53,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:00:53,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:00:53,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:00:53,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:00:53,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:00:53,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:00:53,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:00:53,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:00:53,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:00:53,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:00:53,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:00:53,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:00:53,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:00:53,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:00:53,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:00:53,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:00:53,713 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:00:53,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:00:53,714 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:00:53,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:00:53,714 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:00:53,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:00:53,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:00:53,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:00:53,717 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:00:53,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:00:53,718 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:00:53,718 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:00:53,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:00:53,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:00:53,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:00:53,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:00:53,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:00:53,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:00:53,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:00:53,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:00:53,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:00:53,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:00:53,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:00:53,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:00:53,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:00:53,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:00:53,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:00:53,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:00:53,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:00:53,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:00:53,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:00:53,724 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:00:53,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:00:53,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:00:53,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:00:53,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:00:53,726 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_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66ef092b36e94b4e069e977f939a612176fcaf [2021-10-13 07:00:54,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:00:54,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:00:54,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:00:54,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:00:54,114 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:00:54,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2021-10-13 07:00:54,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/data/07145dbc0/3e3f3709c7814087a8a5cf9a4a2af18e/FLAG583dc6756 [2021-10-13 07:00:54,963 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:00:54,964 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2021-10-13 07:00:54,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/data/07145dbc0/3e3f3709c7814087a8a5cf9a4a2af18e/FLAG583dc6756 [2021-10-13 07:00:55,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/data/07145dbc0/3e3f3709c7814087a8a5cf9a4a2af18e [2021-10-13 07:00:55,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:00:55,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:00:55,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:00:55,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:00:55,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:00:55,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:55,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2dbff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55, skipping insertion in model container [2021-10-13 07:00:55,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:55,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:00:55,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:00:55,509 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_1d566157-7b76-4822-9978-46a612fde6ad/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2021-10-13 07:00:55,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:00:55,823 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:00:55,837 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_1d566157-7b76-4822-9978-46a612fde6ad/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2021-10-13 07:00:55,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:00:55,976 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:00:55,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55 WrapperNode [2021-10-13 07:00:55,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:00:55,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:00:55,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:00:55,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:00:55,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:00:56,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:00:56,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:00:56,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:00:56,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:00:56,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:00:56,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:00:56,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:00:56,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (1/1) ... [2021-10-13 07:00:56,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:00:56,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:00:56,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:00:56,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:00:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:00:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 07:00:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:00:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:00:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 07:00:56,276 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 07:00:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 07:00:56,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 07:00:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 07:00:56,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 07:00:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-13 07:00:56,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-13 07:00:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:00:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 07:00:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:00:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:00:56,280 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 07:00:58,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:00:58,750 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:00:58,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:00:58 BoogieIcfgContainer [2021-10-13 07:00:58,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:00:58,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:00:58,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:00:58,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:00:58,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:00:55" (1/3) ... [2021-10-13 07:00:58,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147b599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:00:58, skipping insertion in model container [2021-10-13 07:00:58,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:55" (2/3) ... [2021-10-13 07:00:58,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147b599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:00:58, skipping insertion in model container [2021-10-13 07:00:58,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:00:58" (3/3) ... [2021-10-13 07:00:58,771 INFO L111 eAbstractionObserver]: Analyzing ICFG mix037_tso.oepc.i [2021-10-13 07:00:58,779 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 07:00:58,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:00:58,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:00:58,780 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:00:58,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,874 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,875 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,881 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,882 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,882 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,885 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,885 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,885 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,886 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,897 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,897 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,897 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,897 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,902 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,908 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,909 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,912 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,920 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,920 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,920 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,921 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,921 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,922 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,922 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,922 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,923 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,923 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,923 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,923 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,924 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,924 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,924 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,925 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,925 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,925 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,925 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,926 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,926 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,927 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,928 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,935 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,936 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,936 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,936 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,936 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,937 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,937 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,937 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,938 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,939 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,942 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,942 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,943 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,945 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,948 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,950 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,956 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,960 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:00:58,962 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:00:59,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:00:59,043 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, mConcurrency=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 [2021-10-13 07:00:59,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 07:00:59,075 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:00:59,093 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 132 transitions, 284 flow [2021-10-13 07:00:59,097 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 132 transitions, 284 flow [2021-10-13 07:00:59,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 284 flow [2021-10-13 07:00:59,169 INFO L129 PetriNetUnfolder]: 2/128 cut-off events. [2021-10-13 07:00:59,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:00:59,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2021-10-13 07:00:59,181 INFO L116 LiptonReduction]: Number of co-enabled transitions 3194 [2021-10-13 07:01:06,468 INFO L131 LiptonReduction]: Checked pairs total: 9561 [2021-10-13 07:01:06,469 INFO L133 LiptonReduction]: Total number of compositions: 111 [2021-10-13 07:01:06,476 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 36 transitions, 92 flow [2021-10-13 07:01:06,787 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5172 states, 5169 states have (on average 4.176436448055717) internal successors, (21588), 5171 states have internal predecessors, (21588), 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) [2021-10-13 07:01:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 5172 states, 5169 states have (on average 4.176436448055717) internal successors, (21588), 5171 states have internal predecessors, (21588), 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) [2021-10-13 07:01:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:01:06,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:06,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:01:06,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:06,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:06,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1210546297, now seen corresponding path program 1 times [2021-10-13 07:01:06,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:06,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085126432] [2021-10-13 07:01:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:06,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:07,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:07,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085126432] [2021-10-13 07:01:07,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085126432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:07,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:07,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:01:07,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239996834] [2021-10-13 07:01:07,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:01:07,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:01:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:01:07,171 INFO L87 Difference]: Start difference. First operand has 5172 states, 5169 states have (on average 4.176436448055717) internal successors, (21588), 5171 states have internal predecessors, (21588), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-13 07:01:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:07,328 INFO L93 Difference]: Finished difference Result 4212 states and 16640 transitions. [2021-10-13 07:01:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:01:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-13 07:01:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:07,399 INFO L225 Difference]: With dead ends: 4212 [2021-10-13 07:01:07,399 INFO L226 Difference]: Without dead ends: 4062 [2021-10-13 07:01:07,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:01:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-10-13 07:01:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4062. [2021-10-13 07:01:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 4061 states have (on average 3.9706968726914553) internal successors, (16125), 4061 states have internal predecessors, (16125), 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) [2021-10-13 07:01:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 16125 transitions. [2021-10-13 07:01:07,791 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 16125 transitions. Word has length 5 [2021-10-13 07:01:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:07,791 INFO L470 AbstractCegarLoop]: Abstraction has 4062 states and 16125 transitions. [2021-10-13 07:01:07,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-13 07:01:07,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 16125 transitions. [2021-10-13 07:01:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:01:07,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:07,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:07,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:01:07,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1250369304, now seen corresponding path program 1 times [2021-10-13 07:01:07,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:07,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745453413] [2021-10-13 07:01:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:07,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:08,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:08,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745453413] [2021-10-13 07:01:08,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745453413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:08,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:08,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:01:08,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369057193] [2021-10-13 07:01:08,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:01:08,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:01:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:01:08,086 INFO L87 Difference]: Start difference. First operand 4062 states and 16125 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 07:01:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:08,190 INFO L93 Difference]: Finished difference Result 4312 states and 16600 transitions. [2021-10-13 07:01:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:01:08,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-10-13 07:01:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:08,236 INFO L225 Difference]: With dead ends: 4312 [2021-10-13 07:01:08,237 INFO L226 Difference]: Without dead ends: 3562 [2021-10-13 07:01:08,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-10-13 07:01:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2021-10-13 07:01:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.9104184217916313) internal successors, (13925), 3561 states have internal predecessors, (13925), 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) [2021-10-13 07:01:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 13925 transitions. [2021-10-13 07:01:08,510 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 13925 transitions. Word has length 12 [2021-10-13 07:01:08,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:08,511 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 13925 transitions. [2021-10-13 07:01:08,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 07:01:08,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 13925 transitions. [2021-10-13 07:01:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:01:08,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:08,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:08,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:01:08,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1894191036, now seen corresponding path program 1 times [2021-10-13 07:01:08,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:08,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359528862] [2021-10-13 07:01:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:08,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:08,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:08,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359528862] [2021-10-13 07:01:08,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359528862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:08,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:08,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:01:08,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823026993] [2021-10-13 07:01:08,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:01:08,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:01:08,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:08,872 INFO L87 Difference]: Start difference. First operand 3562 states and 13925 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-13 07:01:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:09,059 INFO L93 Difference]: Finished difference Result 3982 states and 15176 transitions. [2021-10-13 07:01:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:01:09,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-10-13 07:01:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:09,102 INFO L225 Difference]: With dead ends: 3982 [2021-10-13 07:01:09,102 INFO L226 Difference]: Without dead ends: 3482 [2021-10-13 07:01:09,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:01:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-10-13 07:01:09,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3482. [2021-10-13 07:01:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.895719620798621) internal successors, (13561), 3481 states have internal predecessors, (13561), 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) [2021-10-13 07:01:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 13561 transitions. [2021-10-13 07:01:09,329 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 13561 transitions. Word has length 14 [2021-10-13 07:01:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:09,329 INFO L470 AbstractCegarLoop]: Abstraction has 3482 states and 13561 transitions. [2021-10-13 07:01:09,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-13 07:01:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 13561 transitions. [2021-10-13 07:01:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:01:09,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:09,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:09,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:01:09,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1643311483, now seen corresponding path program 1 times [2021-10-13 07:01:09,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:09,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140419476] [2021-10-13 07:01:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:09,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:09,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:09,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140419476] [2021-10-13 07:01:09,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140419476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:09,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:09,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:09,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178428411] [2021-10-13 07:01:09,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:01:09,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:01:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:01:09,503 INFO L87 Difference]: Start difference. First operand 3482 states and 13561 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-13 07:01:09,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:09,699 INFO L93 Difference]: Finished difference Result 4122 states and 15761 transitions. [2021-10-13 07:01:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:01:09,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-10-13 07:01:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:09,749 INFO L225 Difference]: With dead ends: 4122 [2021-10-13 07:01:09,749 INFO L226 Difference]: Without dead ends: 3666 [2021-10-13 07:01:09,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:01:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-10-13 07:01:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3666. [2021-10-13 07:01:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3665 states have (on average 3.8889495225102317) internal successors, (14253), 3665 states have internal predecessors, (14253), 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) [2021-10-13 07:01:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 14253 transitions. [2021-10-13 07:01:10,054 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 14253 transitions. Word has length 15 [2021-10-13 07:01:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:10,055 INFO L470 AbstractCegarLoop]: Abstraction has 3666 states and 14253 transitions. [2021-10-13 07:01:10,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-13 07:01:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 14253 transitions. [2021-10-13 07:01:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:01:10,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:10,066 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:10,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:01:10,066 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:10,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:10,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1432084009, now seen corresponding path program 1 times [2021-10-13 07:01:10,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:10,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425448291] [2021-10-13 07:01:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:10,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:10,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:10,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425448291] [2021-10-13 07:01:10,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425448291] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:10,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:10,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:10,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280485085] [2021-10-13 07:01:10,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:01:10,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:01:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:01:10,371 INFO L87 Difference]: Start difference. First operand 3666 states and 14253 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-13 07:01:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:10,734 INFO L93 Difference]: Finished difference Result 3846 states and 14712 transitions. [2021-10-13 07:01:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:01:10,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-13 07:01:10,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:10,768 INFO L225 Difference]: With dead ends: 3846 [2021-10-13 07:01:10,768 INFO L226 Difference]: Without dead ends: 3546 [2021-10-13 07:01:10,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-10-13 07:01:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 3546. [2021-10-13 07:01:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 3.8778561354019745) internal successors, (13747), 3545 states have internal predecessors, (13747), 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) [2021-10-13 07:01:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 13747 transitions. [2021-10-13 07:01:11,060 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 13747 transitions. Word has length 16 [2021-10-13 07:01:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:11,061 INFO L470 AbstractCegarLoop]: Abstraction has 3546 states and 13747 transitions. [2021-10-13 07:01:11,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-13 07:01:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 13747 transitions. [2021-10-13 07:01:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:01:11,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:11,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:11,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:01:11,072 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:11,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash -202895534, now seen corresponding path program 1 times [2021-10-13 07:01:11,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:11,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513575983] [2021-10-13 07:01:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:11,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:11,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:11,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513575983] [2021-10-13 07:01:11,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513575983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:11,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:11,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:01:11,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581306541] [2021-10-13 07:01:11,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:01:11,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:11,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:01:11,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:11,302 INFO L87 Difference]: Start difference. First operand 3546 states and 13747 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-13 07:01:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:11,712 INFO L93 Difference]: Finished difference Result 4088 states and 15736 transitions. [2021-10-13 07:01:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:01:11,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-13 07:01:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:11,803 INFO L225 Difference]: With dead ends: 4088 [2021-10-13 07:01:11,803 INFO L226 Difference]: Without dead ends: 3820 [2021-10-13 07:01:11,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:01:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2021-10-13 07:01:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3820. [2021-10-13 07:01:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3819 states have (on average 3.8989264205289342) internal successors, (14890), 3819 states have internal predecessors, (14890), 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) [2021-10-13 07:01:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 14890 transitions. [2021-10-13 07:01:11,997 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 14890 transitions. Word has length 17 [2021-10-13 07:01:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:11,998 INFO L470 AbstractCegarLoop]: Abstraction has 3820 states and 14890 transitions. [2021-10-13 07:01:11,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-13 07:01:11,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 14890 transitions. [2021-10-13 07:01:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:01:12,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:12,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:12,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:01:12,008 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:12,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1444834274, now seen corresponding path program 2 times [2021-10-13 07:01:12,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:12,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490035334] [2021-10-13 07:01:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:12,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:12,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:12,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490035334] [2021-10-13 07:01:12,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490035334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:12,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:12,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:01:12,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861837024] [2021-10-13 07:01:12,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:01:12,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:12,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:01:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:12,203 INFO L87 Difference]: Start difference. First operand 3820 states and 14890 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-13 07:01:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:12,473 INFO L93 Difference]: Finished difference Result 4716 states and 18142 transitions. [2021-10-13 07:01:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:01:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-13 07:01:12,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:12,498 INFO L225 Difference]: With dead ends: 4716 [2021-10-13 07:01:12,498 INFO L226 Difference]: Without dead ends: 4368 [2021-10-13 07:01:12,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:01:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2021-10-13 07:01:12,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 4158. [2021-10-13 07:01:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 4157 states have (on average 3.879961510704835) internal successors, (16129), 4157 states have internal predecessors, (16129), 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) [2021-10-13 07:01:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 16129 transitions. [2021-10-13 07:01:12,772 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 16129 transitions. Word has length 17 [2021-10-13 07:01:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:12,773 INFO L470 AbstractCegarLoop]: Abstraction has 4158 states and 16129 transitions. [2021-10-13 07:01:12,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-13 07:01:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 16129 transitions. [2021-10-13 07:01:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:01:12,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:12,784 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:12,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:01:12,785 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1537307112, now seen corresponding path program 3 times [2021-10-13 07:01:12,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:12,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565689307] [2021-10-13 07:01:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:12,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:12,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:12,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565689307] [2021-10-13 07:01:12,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565689307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:12,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:12,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:01:12,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684888778] [2021-10-13 07:01:12,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:01:12,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:01:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:12,956 INFO L87 Difference]: Start difference. First operand 4158 states and 16129 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-13 07:01:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:13,295 INFO L93 Difference]: Finished difference Result 5072 states and 19442 transitions. [2021-10-13 07:01:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:01:13,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-13 07:01:13,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:13,422 INFO L225 Difference]: With dead ends: 5072 [2021-10-13 07:01:13,422 INFO L226 Difference]: Without dead ends: 4764 [2021-10-13 07:01:13,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:01:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2021-10-13 07:01:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4250. [2021-10-13 07:01:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4249 states have (on average 3.85337726523888) internal successors, (16373), 4249 states have internal predecessors, (16373), 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) [2021-10-13 07:01:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 16373 transitions. [2021-10-13 07:01:13,666 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 16373 transitions. Word has length 17 [2021-10-13 07:01:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:13,667 INFO L470 AbstractCegarLoop]: Abstraction has 4250 states and 16373 transitions. [2021-10-13 07:01:13,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-13 07:01:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 16373 transitions. [2021-10-13 07:01:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:01:13,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:13,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:13,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:01:13,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:13,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1865132518, now seen corresponding path program 1 times [2021-10-13 07:01:13,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:13,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715677400] [2021-10-13 07:01:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:13,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:13,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:13,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715677400] [2021-10-13 07:01:13,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715677400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:13,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:13,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:01:13,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172340930] [2021-10-13 07:01:13,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:01:13,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:01:13,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:01:13,792 INFO L87 Difference]: Start difference. First operand 4250 states and 16373 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 07:01:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:13,870 INFO L93 Difference]: Finished difference Result 4216 states and 14796 transitions. [2021-10-13 07:01:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:01:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-10-13 07:01:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:13,895 INFO L225 Difference]: With dead ends: 4216 [2021-10-13 07:01:13,895 INFO L226 Difference]: Without dead ends: 3178 [2021-10-13 07:01:13,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2021-10-13 07:01:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 3178. [2021-10-13 07:01:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3177 states have (on average 3.4664778092540134) internal successors, (11013), 3177 states have internal predecessors, (11013), 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) [2021-10-13 07:01:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 11013 transitions. [2021-10-13 07:01:14,048 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 11013 transitions. Word has length 17 [2021-10-13 07:01:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:14,048 INFO L470 AbstractCegarLoop]: Abstraction has 3178 states and 11013 transitions. [2021-10-13 07:01:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 07:01:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 11013 transitions. [2021-10-13 07:01:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:01:14,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:14,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:14,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:01:14,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:14,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1952110015, now seen corresponding path program 1 times [2021-10-13 07:01:14,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:14,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068634494] [2021-10-13 07:01:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:14,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:14,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:14,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068634494] [2021-10-13 07:01:14,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068634494] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:14,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:14,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:14,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974225274] [2021-10-13 07:01:14,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:01:14,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:01:14,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:14,173 INFO L87 Difference]: Start difference. First operand 3178 states and 11013 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-13 07:01:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:14,235 INFO L93 Difference]: Finished difference Result 2562 states and 8197 transitions. [2021-10-13 07:01:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:01:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-10-13 07:01:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:14,246 INFO L225 Difference]: With dead ends: 2562 [2021-10-13 07:01:14,246 INFO L226 Difference]: Without dead ends: 1952 [2021-10-13 07:01:14,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:01:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2021-10-13 07:01:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1724. [2021-10-13 07:01:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 3.089378990133488) internal successors, (5323), 1723 states have internal predecessors, (5323), 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) [2021-10-13 07:01:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 5323 transitions. [2021-10-13 07:01:14,315 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 5323 transitions. Word has length 18 [2021-10-13 07:01:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:14,315 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 5323 transitions. [2021-10-13 07:01:14,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-13 07:01:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 5323 transitions. [2021-10-13 07:01:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:01:14,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:14,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:14,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:01:14,322 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:14,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:14,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1558105404, now seen corresponding path program 1 times [2021-10-13 07:01:14,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:14,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846812456] [2021-10-13 07:01:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:14,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:14,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:14,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846812456] [2021-10-13 07:01:14,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846812456] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:14,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:14,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:01:14,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285105418] [2021-10-13 07:01:14,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:01:14,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:01:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:01:14,510 INFO L87 Difference]: Start difference. First operand 1724 states and 5323 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-10-13 07:01:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:14,567 INFO L93 Difference]: Finished difference Result 1455 states and 4473 transitions. [2021-10-13 07:01:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:01:14,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-10-13 07:01:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:14,574 INFO L225 Difference]: With dead ends: 1455 [2021-10-13 07:01:14,574 INFO L226 Difference]: Without dead ends: 1290 [2021-10-13 07:01:14,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:14,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-10-13 07:01:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1158. [2021-10-13 07:01:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 3.133102852203976) internal successors, (3625), 1157 states have internal predecessors, (3625), 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) [2021-10-13 07:01:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3625 transitions. [2021-10-13 07:01:14,611 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3625 transitions. Word has length 21 [2021-10-13 07:01:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:14,611 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 3625 transitions. [2021-10-13 07:01:14,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-10-13 07:01:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3625 transitions. [2021-10-13 07:01:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:01:14,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:14,616 INFO L512 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] [2021-10-13 07:01:14,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:01:14,617 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:14,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:14,617 INFO L82 PathProgramCache]: Analyzing trace with hash -50990654, now seen corresponding path program 1 times [2021-10-13 07:01:14,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:14,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122503534] [2021-10-13 07:01:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:14,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:14,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:14,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122503534] [2021-10-13 07:01:14,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122503534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:14,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:14,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:14,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785931686] [2021-10-13 07:01:14,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:01:14,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:14,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:01:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:14,733 INFO L87 Difference]: Start difference. First operand 1158 states and 3625 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-13 07:01:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:14,782 INFO L93 Difference]: Finished difference Result 1535 states and 4688 transitions. [2021-10-13 07:01:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:01:14,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-10-13 07:01:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:14,788 INFO L225 Difference]: With dead ends: 1535 [2021-10-13 07:01:14,788 INFO L226 Difference]: Without dead ends: 1164 [2021-10-13 07:01:14,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2021-10-13 07:01:14,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1158. [2021-10-13 07:01:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 3.044943820224719) internal successors, (3523), 1157 states have internal predecessors, (3523), 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) [2021-10-13 07:01:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3523 transitions. [2021-10-13 07:01:14,822 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3523 transitions. Word has length 25 [2021-10-13 07:01:14,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:14,822 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 3523 transitions. [2021-10-13 07:01:14,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-13 07:01:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3523 transitions. [2021-10-13 07:01:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:01:14,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:14,828 INFO L512 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] [2021-10-13 07:01:14,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:01:14,828 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:14,829 INFO L82 PathProgramCache]: Analyzing trace with hash 728958139, now seen corresponding path program 1 times [2021-10-13 07:01:14,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:14,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472602814] [2021-10-13 07:01:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:14,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:14,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:14,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472602814] [2021-10-13 07:01:14,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472602814] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:14,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:14,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:14,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757559416] [2021-10-13 07:01:14,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:01:14,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:01:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:14,961 INFO L87 Difference]: Start difference. First operand 1158 states and 3523 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-13 07:01:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:15,007 INFO L93 Difference]: Finished difference Result 1697 states and 5071 transitions. [2021-10-13 07:01:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:01:15,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-10-13 07:01:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:15,014 INFO L225 Difference]: With dead ends: 1697 [2021-10-13 07:01:15,014 INFO L226 Difference]: Without dead ends: 974 [2021-10-13 07:01:15,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:15,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-10-13 07:01:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 968. [2021-10-13 07:01:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 2.842812823164426) internal successors, (2749), 967 states have internal predecessors, (2749), 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) [2021-10-13 07:01:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2749 transitions. [2021-10-13 07:01:15,040 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2749 transitions. Word has length 25 [2021-10-13 07:01:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:15,040 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 2749 transitions. [2021-10-13 07:01:15,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-13 07:01:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2749 transitions. [2021-10-13 07:01:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:01:15,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:15,045 INFO L512 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] [2021-10-13 07:01:15,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:01:15,046 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash -509222931, now seen corresponding path program 2 times [2021-10-13 07:01:15,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:15,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121540041] [2021-10-13 07:01:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:15,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:15,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:15,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121540041] [2021-10-13 07:01:15,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121540041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:15,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:15,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:15,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452973115] [2021-10-13 07:01:15,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:01:15,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:01:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:15,175 INFO L87 Difference]: Start difference. First operand 968 states and 2749 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-13 07:01:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:15,220 INFO L93 Difference]: Finished difference Result 1344 states and 3710 transitions. [2021-10-13 07:01:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:01:15,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-10-13 07:01:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:15,225 INFO L225 Difference]: With dead ends: 1344 [2021-10-13 07:01:15,225 INFO L226 Difference]: Without dead ends: 876 [2021-10-13 07:01:15,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-13 07:01:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 870. [2021-10-13 07:01:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 2.6892980437284235) internal successors, (2337), 869 states have internal predecessors, (2337), 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) [2021-10-13 07:01:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 2337 transitions. [2021-10-13 07:01:15,249 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 2337 transitions. Word has length 25 [2021-10-13 07:01:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:15,249 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 2337 transitions. [2021-10-13 07:01:15,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-13 07:01:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 2337 transitions. [2021-10-13 07:01:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:01:15,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:15,254 INFO L512 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] [2021-10-13 07:01:15,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 07:01:15,254 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:15,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1229883232, now seen corresponding path program 2 times [2021-10-13 07:01:15,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:15,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241941571] [2021-10-13 07:01:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:15,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:15,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:15,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241941571] [2021-10-13 07:01:15,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241941571] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:15,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:15,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:01:15,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160744269] [2021-10-13 07:01:15,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:01:15,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:01:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:15,474 INFO L87 Difference]: Start difference. First operand 870 states and 2337 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-10-13 07:01:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:15,653 INFO L93 Difference]: Finished difference Result 1302 states and 3432 transitions. [2021-10-13 07:01:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:01:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2021-10-13 07:01:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:15,658 INFO L225 Difference]: With dead ends: 1302 [2021-10-13 07:01:15,658 INFO L226 Difference]: Without dead ends: 1098 [2021-10-13 07:01:15,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:01:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-10-13 07:01:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 858. [2021-10-13 07:01:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 2.598599766627771) internal successors, (2227), 857 states have internal predecessors, (2227), 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) [2021-10-13 07:01:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2227 transitions. [2021-10-13 07:01:15,685 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2227 transitions. Word has length 25 [2021-10-13 07:01:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:15,686 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 2227 transitions. [2021-10-13 07:01:15,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-10-13 07:01:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2227 transitions. [2021-10-13 07:01:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:01:15,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:15,689 INFO L512 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] [2021-10-13 07:01:15,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 07:01:15,690 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:15,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:15,691 INFO L82 PathProgramCache]: Analyzing trace with hash 570060074, now seen corresponding path program 3 times [2021-10-13 07:01:15,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:15,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721476457] [2021-10-13 07:01:15,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:15,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:15,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:15,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721476457] [2021-10-13 07:01:15,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721476457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:15,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:15,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:01:15,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094857232] [2021-10-13 07:01:15,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:01:15,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:01:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:01:15,973 INFO L87 Difference]: Start difference. First operand 858 states and 2227 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2021-10-13 07:01:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:16,203 INFO L93 Difference]: Finished difference Result 1212 states and 3130 transitions. [2021-10-13 07:01:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:01:16,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 25 [2021-10-13 07:01:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:16,209 INFO L225 Difference]: With dead ends: 1212 [2021-10-13 07:01:16,210 INFO L226 Difference]: Without dead ends: 1058 [2021-10-13 07:01:16,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:01:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-10-13 07:01:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 826. [2021-10-13 07:01:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.5927272727272728) internal successors, (2139), 825 states have internal predecessors, (2139), 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) [2021-10-13 07:01:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2139 transitions. [2021-10-13 07:01:16,244 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2139 transitions. Word has length 25 [2021-10-13 07:01:16,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:16,244 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2139 transitions. [2021-10-13 07:01:16,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2021-10-13 07:01:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2139 transitions. [2021-10-13 07:01:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:01:16,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:16,249 INFO L512 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] [2021-10-13 07:01:16,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 07:01:16,250 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:16,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1168527104, now seen corresponding path program 4 times [2021-10-13 07:01:16,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:16,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473578673] [2021-10-13 07:01:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:16,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:16,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:16,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473578673] [2021-10-13 07:01:16,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473578673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:16,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:16,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:01:16,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074074011] [2021-10-13 07:01:16,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:01:16,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:16,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:01:16,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:01:16,415 INFO L87 Difference]: Start difference. First operand 826 states and 2139 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-10-13 07:01:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:16,509 INFO L93 Difference]: Finished difference Result 781 states and 2051 transitions. [2021-10-13 07:01:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:01:16,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2021-10-13 07:01:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:16,511 INFO L225 Difference]: With dead ends: 781 [2021-10-13 07:01:16,512 INFO L226 Difference]: Without dead ends: 214 [2021-10-13 07:01:16,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:01:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-13 07:01:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 178. [2021-10-13 07:01:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.3333333333333335) internal successors, (413), 177 states have internal predecessors, (413), 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) [2021-10-13 07:01:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 413 transitions. [2021-10-13 07:01:16,518 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 413 transitions. Word has length 25 [2021-10-13 07:01:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:16,519 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 413 transitions. [2021-10-13 07:01:16,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-10-13 07:01:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 413 transitions. [2021-10-13 07:01:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:01:16,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:16,520 INFO L512 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] [2021-10-13 07:01:16,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 07:01:16,521 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:16,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:16,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1254318073, now seen corresponding path program 1 times [2021-10-13 07:01:16,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:16,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216225949] [2021-10-13 07:01:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:16,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:16,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:16,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216225949] [2021-10-13 07:01:16,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216225949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:16,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:16,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:01:16,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418337987] [2021-10-13 07:01:16,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:01:16,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:01:16,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:01:16,828 INFO L87 Difference]: Start difference. First operand 178 states and 413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-10-13 07:01:17,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:17,032 INFO L93 Difference]: Finished difference Result 253 states and 602 transitions. [2021-10-13 07:01:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:01:17,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 29 [2021-10-13 07:01:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:17,034 INFO L225 Difference]: With dead ends: 253 [2021-10-13 07:01:17,034 INFO L226 Difference]: Without dead ends: 206 [2021-10-13 07:01:17,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 158.4ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:01:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-13 07:01:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 170. [2021-10-13 07:01:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.301775147928994) internal successors, (389), 169 states have internal predecessors, (389), 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) [2021-10-13 07:01:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 389 transitions. [2021-10-13 07:01:17,039 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 389 transitions. Word has length 29 [2021-10-13 07:01:17,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:17,039 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 389 transitions. [2021-10-13 07:01:17,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-10-13 07:01:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 389 transitions. [2021-10-13 07:01:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:01:17,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:17,041 INFO L512 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] [2021-10-13 07:01:17,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 07:01:17,041 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:17,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:17,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1914346001, now seen corresponding path program 2 times [2021-10-13 07:01:17,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:17,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432801872] [2021-10-13 07:01:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:17,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:17,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:17,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432801872] [2021-10-13 07:01:17,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432801872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:17,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:17,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 07:01:17,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733033887] [2021-10-13 07:01:17,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:01:17,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:01:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:01:17,441 INFO L87 Difference]: Start difference. First operand 170 states and 389 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-10-13 07:01:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:17,729 INFO L93 Difference]: Finished difference Result 267 states and 615 transitions. [2021-10-13 07:01:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:01:17,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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 29 [2021-10-13 07:01:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:17,731 INFO L225 Difference]: With dead ends: 267 [2021-10-13 07:01:17,731 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 07:01:17,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 218.3ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:01:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 07:01:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 140. [2021-10-13 07:01:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.3093525179856114) internal successors, (321), 139 states have internal predecessors, (321), 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) [2021-10-13 07:01:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 321 transitions. [2021-10-13 07:01:17,735 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 321 transitions. Word has length 29 [2021-10-13 07:01:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:17,735 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 321 transitions. [2021-10-13 07:01:17,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-10-13 07:01:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 321 transitions. [2021-10-13 07:01:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:01:17,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:17,737 INFO L512 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] [2021-10-13 07:01:17,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 07:01:17,737 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-13 07:01:17,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash -65525503, now seen corresponding path program 3 times [2021-10-13 07:01:17,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:17,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120812797] [2021-10-13 07:01:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:17,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:01:17,809 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:01:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:01:17,925 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:01:17,925 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:01:17,926 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:17,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:17,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:01:17,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:01:17,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 07:01:17,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 07:01:17,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:17,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 07:01:17,936 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:01:17,936 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:01:18,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:01:18 BasicIcfg [2021-10-13 07:01:18,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:01:18,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:01:18,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:01:18,106 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:01:18,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:00:58" (3/4) ... [2021-10-13 07:01:18,108 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:01:18,256 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:01:18,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:01:18,258 INFO L168 Benchmark]: Toolchain (without parser) took 23091.16 ms. Allocated memory was 111.1 MB in the beginning and 788.5 MB in the end (delta: 677.4 MB). Free memory was 75.3 MB in the beginning and 410.4 MB in the end (delta: -335.2 MB). Peak memory consumption was 342.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:18,259 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:01:18,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.35 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 72.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:18,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.99 ms. Allocated memory is still 111.1 MB. Free memory was 72.2 MB in the beginning and 69.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:18,260 INFO L168 Benchmark]: Boogie Preprocessor took 88.36 ms. Allocated memory is still 111.1 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:18,261 INFO L168 Benchmark]: RCFGBuilder took 2569.65 ms. Allocated memory is still 111.1 MB. Free memory was 67.1 MB in the beginning and 41.3 MB in the end (delta: 25.8 MB). Peak memory consumption was 45.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:18,261 INFO L168 Benchmark]: TraceAbstraction took 19348.45 ms. Allocated memory was 111.1 MB in the beginning and 788.5 MB in the end (delta: 677.4 MB). Free memory was 41.3 MB in the beginning and 434.6 MB in the end (delta: -393.2 MB). Peak memory consumption was 282.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:18,262 INFO L168 Benchmark]: Witness Printer took 150.85 ms. Allocated memory is still 788.5 MB. Free memory was 434.6 MB in the beginning and 410.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:18,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 806.35 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 72.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.99 ms. Allocated memory is still 111.1 MB. Free memory was 72.2 MB in the beginning and 69.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.36 ms. Allocated memory is still 111.1 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2569.65 ms. Allocated memory is still 111.1 MB. Free memory was 67.1 MB in the beginning and 41.3 MB in the end (delta: 25.8 MB). Peak memory consumption was 45.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19348.45 ms. Allocated memory was 111.1 MB in the beginning and 788.5 MB in the end (delta: 677.4 MB). Free memory was 41.3 MB in the beginning and 434.6 MB in the end (delta: -393.2 MB). Peak memory consumption was 282.8 MB. Max. memory is 16.1 GB. * Witness Printer took 150.85 ms. Allocated memory is still 788.5 MB. Free memory was 434.6 MB in the beginning and 410.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7371.8ms, 143 PlacesBefore, 48 PlacesAfterwards, 132 TransitionsBefore, 36 TransitionsAfterwards, 3194 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 111 TotalNumberOfCompositions, 9561 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3886, positive: 3653, positive conditional: 0, positive unconditional: 3653, negative: 233, negative conditional: 0, negative unconditional: 233, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2146, positive: 2085, positive conditional: 0, positive unconditional: 2085, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2146, positive: 2053, positive conditional: 0, positive unconditional: 2053, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 93, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 784, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 730, negative conditional: 0, negative unconditional: 730, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3886, positive: 1568, positive conditional: 0, positive unconditional: 1568, negative: 172, negative conditional: 0, negative unconditional: 172, unknown: 2146, unknown conditional: 0, unknown unconditional: 2146] , Statistics on independence cache: Total cache size (in pairs): 205, Positive cache size: 172, Positive conditional cache size: 0, Positive unconditional cache size: 172, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p2_EAX = 0; [L716] 0 int __unbuffered_p3_EAX = 0; [L718] 0 int __unbuffered_p3_EBX = 0; [L720] 0 int a = 0; [L722] 0 int b = 0; [L723] 0 _Bool main$tmp_guard0; [L724] 0 _Bool main$tmp_guard1; [L726] 0 int x = 0; [L727] 0 _Bool x$flush_delayed; [L728] 0 int x$mem_tmp; [L729] 0 _Bool x$r_buff0_thd0; [L730] 0 _Bool x$r_buff0_thd1; [L731] 0 _Bool x$r_buff0_thd2; [L732] 0 _Bool x$r_buff0_thd3; [L733] 0 _Bool x$r_buff0_thd4; [L734] 0 _Bool x$r_buff1_thd0; [L735] 0 _Bool x$r_buff1_thd1; [L736] 0 _Bool x$r_buff1_thd2; [L737] 0 _Bool x$r_buff1_thd3; [L738] 0 _Bool x$r_buff1_thd4; [L739] 0 _Bool x$read_delayed; [L740] 0 int *x$read_delayed_var; [L741] 0 int x$w_buff0; [L742] 0 _Bool x$w_buff0_used; [L743] 0 int x$w_buff1; [L744] 0 _Bool x$w_buff1_used; [L746] 0 int y = 0; [L748] 0 int z = 0; [L749] 0 _Bool weak$$choice0; [L750] 0 _Bool weak$$choice2; [L858] 0 pthread_t t993; [L859] FCALL, FORK 0 pthread_create(&t993, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L860] 0 pthread_t t994; [L861] FCALL, FORK 0 pthread_create(&t994, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L862] 0 pthread_t t995; [L863] FCALL, FORK 0 pthread_create(&t995, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L864] 0 pthread_t t996; [L865] FCALL, FORK 0 pthread_create(&t996, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L774] 2 x$w_buff1 = x$w_buff0 [L775] 2 x$w_buff0 = 2 [L776] 2 x$w_buff1_used = x$w_buff0_used [L777] 2 x$w_buff0_used = (_Bool)1 [L18] COND FALSE 2 !(!expression) [L779] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L780] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L781] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L782] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L783] 2 x$r_buff1_thd4 = x$r_buff0_thd4 [L784] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L787] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L804] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L807] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L824] 4 z = 1 [L827] 4 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L810] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L810] EXPR 3 x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x [L810] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L810] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L811] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L811] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L812] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L812] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L813] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L813] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L814] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 [L814] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 [L817] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L819] 3 return 0; [L830] 4 __unbuffered_p3_EAX = a VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L833] 4 __unbuffered_p3_EBX = b VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L836] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L836] EXPR 4 x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x [L836] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L836] 4 x = x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L837] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$w_buff0_used [L837] 4 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$w_buff0_used [L838] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$w_buff1_used [L838] 4 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$w_buff1_used [L839] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$r_buff0_thd4 [L839] 4 x$r_buff0_thd4 = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$r_buff0_thd4 [L840] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$r_buff1_thd4 [L840] 4 x$r_buff1_thd4 = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$r_buff1_thd4 [L754] 1 b = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L757] 1 x = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L790] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L790] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L791] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L791] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L792] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L792] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L793] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L793] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L794] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L794] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L760] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L760] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L760] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L760] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L761] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L761] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L762] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L762] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L763] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L763] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L764] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L764] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L767] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L769] 1 return 0; [L843] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L845] 4 return 0; [L797] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L799] 2 return 0; [L867] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L3] COND FALSE 0 !(!cond) [L871] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L871] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L871] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L871] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L872] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L872] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L873] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L873] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L874] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L874] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L875] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L875] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L878] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L879] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L880] 0 x$flush_delayed = weak$$choice2 [L881] 0 x$mem_tmp = x [L882] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L882] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L883] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L883] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L884] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L884] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L885] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L885] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L886] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L886] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L887] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L887] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L888] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L888] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L889] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L890] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L890] 0 x = x$flush_delayed ? x$mem_tmp : x [L891] 0 x$flush_delayed = (_Bool)0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 859]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 861]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 865]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 863]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 170 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 18912.8ms, OverallIterations: 20, TraceHistogramMax: 1, EmptinessCheckTime: 148.3ms, AutomataDifference: 3991.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7744.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 896 SDtfs, 1156 SDslu, 2088 SDs, 0 SdLazy, 882 SolverSat, 233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1685.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1142.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5172occurred in iteration=0, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2589.9ms AutomataMinimizationTime, 19 MinimizatonAttempts, 1686 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 115.2ms SsaConstructionTime, 1058.9ms SatisfiabilityAnalysisTime, 2700.6ms InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 3201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:01:18,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d566157-7b76-4822-9978-46a612fde6ad/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...