./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix042_rmo.opt.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_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/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_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix042_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/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_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/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 da6b2969ce52cb6e3470e1c149767a2697886ff2 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:20:57,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:20:57,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:20:57,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:20:57,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:20:57,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:20:57,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:20:57,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:20:57,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:20:57,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:20:57,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:20:57,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:20:57,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:20:57,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:20:57,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:20:57,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:20:57,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:20:57,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:20:57,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:20:57,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:20:57,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:20:57,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:20:57,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:20:57,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:20:57,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:20:57,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:20:57,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:20:57,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:20:57,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:20:57,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:20:57,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:20:57,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:20:57,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:20:57,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:20:57,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:20:57,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:20:57,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:20:57,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:20:57,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:20:57,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:20:57,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:20:57,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:20:58,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:20:58,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:20:58,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:20:58,033 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:20:58,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:20:58,034 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:20:58,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:20:58,034 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:20:58,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:20:58,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:20:58,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:20:58,037 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:20:58,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:20:58,037 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:20:58,038 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:20:58,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:20:58,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:20:58,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:20:58,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:20:58,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:20:58,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:20:58,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:20:58,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:20:58,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:20:58,041 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:20:58,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:20:58,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:20:58,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:20:58,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:20:58,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:20:58,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:20:58,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:20:58,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:20:58,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:20:58,046 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:20:58,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:20:58,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:20:58,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:20:58,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:20:58,048 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_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da6b2969ce52cb6e3470e1c149767a2697886ff2 [2021-10-13 07:20:58,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:20:58,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:20:58,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:20:58,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:20:58,451 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:20:58,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/mix042_rmo.opt.i [2021-10-13 07:20:58,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/data/2f3f74404/b283f93e57da4f4d95ceb0af54cbd748/FLAG18e5dc374 [2021-10-13 07:20:59,253 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:20:59,253 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/sv-benchmarks/c/pthread-wmm/mix042_rmo.opt.i [2021-10-13 07:20:59,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/data/2f3f74404/b283f93e57da4f4d95ceb0af54cbd748/FLAG18e5dc374 [2021-10-13 07:20:59,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/data/2f3f74404/b283f93e57da4f4d95ceb0af54cbd748 [2021-10-13 07:20:59,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:20:59,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:20:59,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:20:59,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:20:59,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:20:59,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:59" (1/1) ... [2021-10-13 07:20:59,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3e678b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59, skipping insertion in model container [2021-10-13 07:20:59,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:59" (1/1) ... [2021-10-13 07:20:59,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:20:59,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:20:59,969 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_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/sv-benchmarks/c/pthread-wmm/mix042_rmo.opt.i[948,961] [2021-10-13 07:21:00,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:21:00,328 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:21:00,342 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_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/sv-benchmarks/c/pthread-wmm/mix042_rmo.opt.i[948,961] [2021-10-13 07:21:00,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:21:00,463 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:21:00,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00 WrapperNode [2021-10-13 07:21:00,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:21:00,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:21:00,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:21:00,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:21:00,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:21:00,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:21:00,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:21:00,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:21:00,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:21:00,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:21:00,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:21:00,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:21:00,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2021-10-13 07:21:00,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:21:00,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:21:00,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:21:00,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:21:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:21:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 07:21:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:21:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:21:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 07:21:00,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 07:21:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 07:21:00,798 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 07:21:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 07:21:00,798 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 07:21:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:21:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 07:21:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:21:00,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:21:00,801 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 07:21:03,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:21:03,282 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:21:03,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:03 BoogieIcfgContainer [2021-10-13 07:21:03,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:21:03,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:21:03,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:21:03,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:21:03,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:59" (1/3) ... [2021-10-13 07:21:03,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756590a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:03, skipping insertion in model container [2021-10-13 07:21:03,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (2/3) ... [2021-10-13 07:21:03,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756590a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:03, skipping insertion in model container [2021-10-13 07:21:03,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:03" (3/3) ... [2021-10-13 07:21:03,310 INFO L111 eAbstractionObserver]: Analyzing ICFG mix042_rmo.opt.i [2021-10-13 07:21:03,317 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 07:21:03,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:21:03,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:21:03,322 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:21:03,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,370 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,370 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,372 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,372 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,376 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,376 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,378 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,385 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,386 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,416 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,417 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,424 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,425 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:21:03,435 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:21:03,490 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:21:03,498 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 07:21:03,498 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:21:03,529 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:21:03,541 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 110 transitions, 235 flow [2021-10-13 07:21:03,545 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 110 transitions, 235 flow [2021-10-13 07:21:03,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 110 transitions, 235 flow [2021-10-13 07:21:03,629 INFO L129 PetriNetUnfolder]: 2/107 cut-off events. [2021-10-13 07:21:03,630 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:21:03,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2021-10-13 07:21:03,641 INFO L116 LiptonReduction]: Number of co-enabled transitions 1898 [2021-10-13 07:21:11,587 INFO L131 LiptonReduction]: Checked pairs total: 5193 [2021-10-13 07:21:11,587 INFO L133 LiptonReduction]: Total number of compositions: 94 [2021-10-13 07:21:11,600 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 28 transitions, 71 flow [2021-10-13 07:21:11,698 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 790 states, 787 states have (on average 3.335451080050826) internal successors, (2625), 789 states have internal predecessors, (2625), 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 07:21:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 790 states, 787 states have (on average 3.335451080050826) internal successors, (2625), 789 states have internal predecessors, (2625), 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 07:21:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:21:11,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:11,711 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:11,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2043752155, now seen corresponding path program 1 times [2021-10-13 07:21:11,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:11,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045191034] [2021-10-13 07:21:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:11,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:12,094 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 07:21:12,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:12,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045191034] [2021-10-13 07:21:12,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045191034] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:12,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:12,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:21:12,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028791658] [2021-10-13 07:21:12,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:21:12,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:21:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:21:12,132 INFO L87 Difference]: Start difference. First operand has 790 states, 787 states have (on average 3.335451080050826) internal successors, (2625), 789 states have internal predecessors, (2625), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 07:21:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:12,250 INFO L93 Difference]: Finished difference Result 670 states and 2079 transitions. [2021-10-13 07:21:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:21:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 07:21:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:12,288 INFO L225 Difference]: With dead ends: 670 [2021-10-13 07:21:12,288 INFO L226 Difference]: Without dead ends: 650 [2021-10-13 07:21:12,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:21:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-10-13 07:21:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2021-10-13 07:21:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 3.1248073959938365) internal successors, (2028), 649 states have internal predecessors, (2028), 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 07:21:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2028 transitions. [2021-10-13 07:21:12,429 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2028 transitions. Word has length 7 [2021-10-13 07:21:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:12,430 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2028 transitions. [2021-10-13 07:21:12,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 07:21:12,432 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2028 transitions. [2021-10-13 07:21:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:21:12,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:12,436 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:12,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:21:12,437 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:12,438 INFO L82 PathProgramCache]: Analyzing trace with hash 37630232, now seen corresponding path program 1 times [2021-10-13 07:21:12,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:12,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125117138] [2021-10-13 07:21:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:12,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:12,734 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 07:21:12,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:12,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125117138] [2021-10-13 07:21:12,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125117138] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:12,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:12,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:12,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719994168] [2021-10-13 07:21:12,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:12,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:12,739 INFO L87 Difference]: Start difference. First operand 650 states and 2028 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 07:21:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:12,794 INFO L93 Difference]: Finished difference Result 690 states and 2070 transitions. [2021-10-13 07:21:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:21:12,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-10-13 07:21:12,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:12,803 INFO L225 Difference]: With dead ends: 690 [2021-10-13 07:21:12,803 INFO L226 Difference]: Without dead ends: 570 [2021-10-13 07:21:12,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-13 07:21:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2021-10-13 07:21:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.0650263620386644) internal successors, (1744), 569 states have internal predecessors, (1744), 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 07:21:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1744 transitions. [2021-10-13 07:21:12,832 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1744 transitions. Word has length 10 [2021-10-13 07:21:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:12,832 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1744 transitions. [2021-10-13 07:21:12,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 07:21:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1744 transitions. [2021-10-13 07:21:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:21:12,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:12,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:12,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:21:12,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:12,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1679684013, now seen corresponding path program 1 times [2021-10-13 07:21:12,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:12,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434079212] [2021-10-13 07:21:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:12,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:13,257 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 07:21:13,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:13,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434079212] [2021-10-13 07:21:13,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434079212] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:13,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:13,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:21:13,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809555046] [2021-10-13 07:21:13,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:21:13,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:21:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:13,268 INFO L87 Difference]: Start difference. First operand 570 states and 1744 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 07:21:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:13,413 INFO L93 Difference]: Finished difference Result 710 states and 2141 transitions. [2021-10-13 07:21:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:21:13,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 07:21:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:13,422 INFO L225 Difference]: With dead ends: 710 [2021-10-13 07:21:13,422 INFO L226 Difference]: Without dead ends: 630 [2021-10-13 07:21:13,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-10-13 07:21:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2021-10-13 07:21:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 3.0731319554848966) internal successors, (1933), 629 states have internal predecessors, (1933), 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 07:21:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1933 transitions. [2021-10-13 07:21:13,458 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1933 transitions. Word has length 12 [2021-10-13 07:21:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:13,459 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 1933 transitions. [2021-10-13 07:21:13,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 07:21:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1933 transitions. [2021-10-13 07:21:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:21:13,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:13,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:13,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:21:13,466 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:13,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:13,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1806997293, now seen corresponding path program 2 times [2021-10-13 07:21:13,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:13,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854382315] [2021-10-13 07:21:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:13,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:13,663 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 07:21:13,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:13,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854382315] [2021-10-13 07:21:13,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854382315] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:13,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:13,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:21:13,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822466777] [2021-10-13 07:21:13,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:21:13,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:21:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:13,667 INFO L87 Difference]: Start difference. First operand 630 states and 1933 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 07:21:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:13,806 INFO L93 Difference]: Finished difference Result 678 states and 2013 transitions. [2021-10-13 07:21:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:21:13,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 07:21:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:13,815 INFO L225 Difference]: With dead ends: 678 [2021-10-13 07:21:13,815 INFO L226 Difference]: Without dead ends: 598 [2021-10-13 07:21:13,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:21:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-13 07:21:13,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-10-13 07:21:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 3.036850921273032) internal successors, (1813), 597 states have internal predecessors, (1813), 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 07:21:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1813 transitions. [2021-10-13 07:21:13,847 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1813 transitions. Word has length 12 [2021-10-13 07:21:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:13,847 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1813 transitions. [2021-10-13 07:21:13,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 07:21:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1813 transitions. [2021-10-13 07:21:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:21:13,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:13,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:13,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:21:13,851 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:13,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2041554231, now seen corresponding path program 1 times [2021-10-13 07:21:13,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:13,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627478185] [2021-10-13 07:21:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:13,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:14,032 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 07:21:14,032 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:14,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627478185] [2021-10-13 07:21:14,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627478185] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:14,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:14,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:21:14,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32564891] [2021-10-13 07:21:14,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:21:14,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:21:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:14,035 INFO L87 Difference]: Start difference. First operand 598 states and 1813 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 07:21:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:14,244 INFO L93 Difference]: Finished difference Result 674 states and 2010 transitions. [2021-10-13 07:21:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:21:14,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 07:21:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:14,254 INFO L225 Difference]: With dead ends: 674 [2021-10-13 07:21:14,254 INFO L226 Difference]: Without dead ends: 626 [2021-10-13 07:21:14,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:21:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-10-13 07:21:14,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 578. [2021-10-13 07:21:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 3.0051993067590987) internal successors, (1734), 577 states have internal predecessors, (1734), 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 07:21:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1734 transitions. [2021-10-13 07:21:14,288 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1734 transitions. Word has length 14 [2021-10-13 07:21:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:14,289 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 1734 transitions. [2021-10-13 07:21:14,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 07:21:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1734 transitions. [2021-10-13 07:21:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:21:14,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:14,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:14,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:21:14,292 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2126099785, now seen corresponding path program 2 times [2021-10-13 07:21:14,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:14,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513068339] [2021-10-13 07:21:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:14,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:14,617 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 07:21:14,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:14,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513068339] [2021-10-13 07:21:14,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513068339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:14,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:14,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:21:14,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876711407] [2021-10-13 07:21:14,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:21:14,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:21:14,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:14,620 INFO L87 Difference]: Start difference. First operand 578 states and 1734 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 07:21:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:14,808 INFO L93 Difference]: Finished difference Result 698 states and 2048 transitions. [2021-10-13 07:21:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:21:14,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 07:21:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:14,819 INFO L225 Difference]: With dead ends: 698 [2021-10-13 07:21:14,819 INFO L226 Difference]: Without dead ends: 634 [2021-10-13 07:21:14,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 142.4ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:21:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-10-13 07:21:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 594. [2021-10-13 07:21:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 2.9915682967959527) internal successors, (1774), 593 states have internal predecessors, (1774), 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 07:21:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1774 transitions. [2021-10-13 07:21:14,848 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1774 transitions. Word has length 14 [2021-10-13 07:21:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:14,848 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 1774 transitions. [2021-10-13 07:21:14,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 07:21:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1774 transitions. [2021-10-13 07:21:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:21:14,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:14,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:14,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:21:14,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1323659790, now seen corresponding path program 1 times [2021-10-13 07:21:14,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:14,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99164953] [2021-10-13 07:21:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:14,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:14,996 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 07:21:14,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:14,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99164953] [2021-10-13 07:21:14,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99164953] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:14,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:14,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:21:14,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126740627] [2021-10-13 07:21:14,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:14,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:15,000 INFO L87 Difference]: Start difference. First operand 594 states and 1774 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 07:21:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:15,040 INFO L93 Difference]: Finished difference Result 564 states and 1487 transitions. [2021-10-13 07:21:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:21:15,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 07:21:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:15,044 INFO L225 Difference]: With dead ends: 564 [2021-10-13 07:21:15,045 INFO L226 Difference]: Without dead ends: 420 [2021-10-13 07:21:15,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-10-13 07:21:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2021-10-13 07:21:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 2.5727923627684963) internal successors, (1078), 419 states have internal predecessors, (1078), 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 07:21:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1078 transitions. [2021-10-13 07:21:15,065 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1078 transitions. Word has length 14 [2021-10-13 07:21:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:15,065 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1078 transitions. [2021-10-13 07:21:15,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 07:21:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1078 transitions. [2021-10-13 07:21:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:21:15,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:15,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:15,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:21:15,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:15,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1918829444, now seen corresponding path program 1 times [2021-10-13 07:21:15,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:15,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668429686] [2021-10-13 07:21:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:15,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:15,218 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 07:21:15,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:15,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668429686] [2021-10-13 07:21:15,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668429686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:15,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:15,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:21:15,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164360792] [2021-10-13 07:21:15,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:21:15,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:15,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:21:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:15,221 INFO L87 Difference]: Start difference. First operand 420 states and 1078 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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 07:21:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:15,267 INFO L93 Difference]: Finished difference Result 323 states and 754 transitions. [2021-10-13 07:21:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:21:15,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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 07:21:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:15,270 INFO L225 Difference]: With dead ends: 323 [2021-10-13 07:21:15,270 INFO L226 Difference]: Without dead ends: 248 [2021-10-13 07:21:15,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-13 07:21:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-10-13 07:21:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.2753036437246963) internal successors, (562), 247 states have internal predecessors, (562), 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 07:21:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 562 transitions. [2021-10-13 07:21:15,280 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 562 transitions. Word has length 15 [2021-10-13 07:21:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:15,281 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 562 transitions. [2021-10-13 07:21:15,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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 07:21:15,281 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 562 transitions. [2021-10-13 07:21:15,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:21:15,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:15,282 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 07:21:15,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:21:15,283 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1034297893, now seen corresponding path program 1 times [2021-10-13 07:21:15,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:15,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68701245] [2021-10-13 07:21:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:15,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:15,379 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 07:21:15,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:15,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68701245] [2021-10-13 07:21:15,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68701245] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:15,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:15,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:21:15,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075765875] [2021-10-13 07:21:15,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:21:15,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:21:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:15,382 INFO L87 Difference]: Start difference. First operand 248 states and 562 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 07:21:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:15,426 INFO L93 Difference]: Finished difference Result 334 states and 733 transitions. [2021-10-13 07:21:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:21:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 07:21:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:15,429 INFO L225 Difference]: With dead ends: 334 [2021-10-13 07:21:15,429 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 07:21:15,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 07:21:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 212. [2021-10-13 07:21:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.1279620853080567) internal successors, (449), 211 states have internal predecessors, (449), 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 07:21:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 449 transitions. [2021-10-13 07:21:15,437 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 449 transitions. Word has length 18 [2021-10-13 07:21:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:15,437 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 449 transitions. [2021-10-13 07:21:15,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 07:21:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 449 transitions. [2021-10-13 07:21:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:21:15,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:15,438 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 07:21:15,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:21:15,439 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:15,439 INFO L82 PathProgramCache]: Analyzing trace with hash -151714739, now seen corresponding path program 2 times [2021-10-13 07:21:15,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:15,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498345687] [2021-10-13 07:21:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:15,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:15,536 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 07:21:15,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:15,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498345687] [2021-10-13 07:21:15,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498345687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:15,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:15,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:21:15,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611299028] [2021-10-13 07:21:15,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:21:15,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:21:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:15,538 INFO L87 Difference]: Start difference. First operand 212 states and 449 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 07:21:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:15,620 INFO L93 Difference]: Finished difference Result 181 states and 386 transitions. [2021-10-13 07:21:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:21:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 07:21:15,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:15,623 INFO L225 Difference]: With dead ends: 181 [2021-10-13 07:21:15,624 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 07:21:15,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 07:21:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2021-10-13 07:21:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 92 states have internal predecessors, (186), 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 07:21:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 186 transitions. [2021-10-13 07:21:15,629 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 186 transitions. Word has length 18 [2021-10-13 07:21:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:15,630 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 186 transitions. [2021-10-13 07:21:15,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 07:21:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 186 transitions. [2021-10-13 07:21:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:21:15,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:15,632 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] [2021-10-13 07:21:15,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:21:15,632 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:15,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:15,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1577807285, now seen corresponding path program 1 times [2021-10-13 07:21:15,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:15,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637040292] [2021-10-13 07:21:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:15,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:15,748 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 07:21:15,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:15,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637040292] [2021-10-13 07:21:15,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637040292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:15,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:15,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:21:15,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522522783] [2021-10-13 07:21:15,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:21:15,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:21:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:15,751 INFO L87 Difference]: Start difference. First operand 93 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 07:21:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:15,795 INFO L93 Difference]: Finished difference Result 120 states and 235 transitions. [2021-10-13 07:21:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:21:15,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-10-13 07:21:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:15,797 INFO L225 Difference]: With dead ends: 120 [2021-10-13 07:21:15,798 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 07:21:15,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:15,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 07:21:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-13 07:21:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 states have internal predecessors, (82), 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 07:21:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 82 transitions. [2021-10-13 07:21:15,801 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 82 transitions. Word has length 22 [2021-10-13 07:21:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:15,802 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 82 transitions. [2021-10-13 07:21:15,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 07:21:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2021-10-13 07:21:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:21:15,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:15,803 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] [2021-10-13 07:21:15,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:21:15,804 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1409112787, now seen corresponding path program 2 times [2021-10-13 07:21:15,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:15,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882015696] [2021-10-13 07:21:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:15,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:16,007 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 07:21:16,008 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882015696] [2021-10-13 07:21:16,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882015696] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:16,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:16,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:21:16,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583552291] [2021-10-13 07:21:16,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:21:16,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:21:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:16,011 INFO L87 Difference]: Start difference. First operand 49 states and 82 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 07:21:16,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:16,138 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2021-10-13 07:21:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:21:16,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-10-13 07:21:16,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:16,139 INFO L225 Difference]: With dead ends: 64 [2021-10-13 07:21:16,140 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 07:21:16,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:21:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 07:21:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 07:21:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 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 07:21:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2021-10-13 07:21:16,142 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 22 [2021-10-13 07:21:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:16,143 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-10-13 07:21:16,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 07:21:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2021-10-13 07:21:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:21:16,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:16,144 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] [2021-10-13 07:21:16,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:21:16,145 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 07:21:16,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:16,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1949594141, now seen corresponding path program 3 times [2021-10-13 07:21:16,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:16,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72116538] [2021-10-13 07:21:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:16,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:21:16,252 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:21:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:21:16,413 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:21:16,414 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:21:16,415 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:21:16,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:21:16,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:21:16,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:21:16,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 07:21:16,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:21:16,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:21:16,426 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:21:16,426 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:21:16,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:21:16 BasicIcfg [2021-10-13 07:21:16,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:21:16,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:21:16,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:21:16,559 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:21:16,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:03" (3/4) ... [2021-10-13 07:21:16,561 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:21:16,681 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:21:16,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:21:16,683 INFO L168 Benchmark]: Toolchain (without parser) took 17143.62 ms. Allocated memory was 115.3 MB in the beginning and 226.5 MB in the end (delta: 111.1 MB). Free memory was 72.5 MB in the beginning and 83.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 98.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:16,683 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory was 90.1 MB in the beginning and 90.1 MB in the end (delta: 56.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:21:16,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 911.48 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 76.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:16,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.03 ms. Allocated memory is still 115.3 MB. Free memory was 76.3 MB in the beginning and 73.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:16,685 INFO L168 Benchmark]: Boogie Preprocessor took 70.14 ms. Allocated memory is still 115.3 MB. Free memory was 73.2 MB in the beginning and 71.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:16,687 INFO L168 Benchmark]: RCFGBuilder took 2636.50 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 71.1 MB in the beginning and 127.3 MB in the end (delta: -56.2 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:16,688 INFO L168 Benchmark]: TraceAbstraction took 13255.08 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 126.2 MB in the beginning and 97.0 MB in the end (delta: 29.2 MB). Peak memory consumption was 98.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:16,688 INFO L168 Benchmark]: Witness Printer took 122.60 ms. Allocated memory is still 226.5 MB. Free memory was 97.0 MB in the beginning and 83.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:16,691 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 115.3 MB. Free memory was 90.1 MB in the beginning and 90.1 MB in the end (delta: 56.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 911.48 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 76.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.03 ms. Allocated memory is still 115.3 MB. Free memory was 76.3 MB in the beginning and 73.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.14 ms. Allocated memory is still 115.3 MB. Free memory was 73.2 MB in the beginning and 71.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2636.50 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 71.1 MB in the beginning and 127.3 MB in the end (delta: -56.2 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13255.08 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 126.2 MB in the beginning and 97.0 MB in the end (delta: 29.2 MB). Peak memory consumption was 98.4 MB. Max. memory is 16.1 GB. * Witness Printer took 122.60 ms. Allocated memory is still 226.5 MB. Free memory was 97.0 MB in the beginning and 83.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8042.9ms, 118 PlacesBefore, 37 PlacesAfterwards, 110 TransitionsBefore, 28 TransitionsAfterwards, 1898 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 5193 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2700, positive: 2524, positive conditional: 0, positive unconditional: 2524, negative: 176, negative conditional: 0, negative unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1340, positive: 1295, positive conditional: 0, positive unconditional: 1295, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1340, positive: 1279, positive conditional: 0, positive unconditional: 1279, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 616, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 590, negative conditional: 0, negative unconditional: 590, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2700, positive: 1229, positive conditional: 0, positive unconditional: 1229, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 1340, unknown conditional: 0, unknown unconditional: 1340] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 129, Positive conditional cache size: 0, Positive unconditional cache size: 129, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - 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: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L717] 0 int a = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L724] 0 _Bool y$flush_delayed; [L725] 0 int y$mem_tmp; [L726] 0 _Bool y$r_buff0_thd0; [L727] 0 _Bool y$r_buff0_thd1; [L728] 0 _Bool y$r_buff0_thd2; [L729] 0 _Bool y$r_buff0_thd3; [L730] 0 _Bool y$r_buff1_thd0; [L731] 0 _Bool y$r_buff1_thd1; [L732] 0 _Bool y$r_buff1_thd2; [L733] 0 _Bool y$r_buff1_thd3; [L734] 0 _Bool y$read_delayed; [L735] 0 int *y$read_delayed_var; [L736] 0 int y$w_buff0; [L737] 0 _Bool y$w_buff0_used; [L738] 0 int y$w_buff1; [L739] 0 _Bool y$w_buff1_used; [L741] 0 int z = 0; [L742] 0 _Bool weak$$choice0; [L743] 0 _Bool weak$$choice2; [L825] 0 pthread_t t1120; [L826] FCALL, FORK 0 pthread_create(&t1120, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L827] 0 pthread_t t1121; [L828] FCALL, FORK 0 pthread_create(&t1121, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L829] 0 pthread_t t1122; [L830] FCALL, FORK 0 pthread_create(&t1122, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L782] 3 y$w_buff1 = y$w_buff0 [L783] 3 y$w_buff0 = 2 [L784] 3 y$w_buff1_used = y$w_buff0_used [L785] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L787] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L788] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L789] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L790] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L791] 3 y$r_buff0_thd3 = (_Bool)1 [L794] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L797] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L800] 3 __unbuffered_p2_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L747] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L750] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L762] 2 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L803] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L803] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L804] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L804] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L805] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L805] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L806] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L806] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L807] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L807] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L757] 1 return 0; [L810] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L812] 3 return 0; [L832] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L836] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L836] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L836] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L836] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L837] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L837] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L838] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L838] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L839] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L839] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L840] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L840] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L843] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L844] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L845] 0 y$flush_delayed = weak$$choice2 [L846] 0 y$mem_tmp = y [L847] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L847] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L848] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L848] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L849] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L849] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L850] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L850] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L851] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L851] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L852] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L852] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L853] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L853] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L854] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p0_EAX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L855] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L855] 0 y = y$flush_delayed ? y$mem_tmp : y [L856] 0 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=1, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=1, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, 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: 826]: 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: 828]: 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: 830]: 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 7 procedures, 138 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 12934.2ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 42.4ms, AutomataDifference: 1393.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8199.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 355 SDtfs, 417 SDslu, 770 SDs, 0 SdLazy, 332 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 671.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 548.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=790occurred in iteration=0, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 322.9ms AutomataMinimizationTime, 12 MinimizatonAttempts, 106 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 71.7ms SsaConstructionTime, 773.3ms SatisfiabilityAnalysisTime, 1605.9ms InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 1051 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 07:21:16,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44002b3e-b50f-43cb-b8b6-a95986b9ccbf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...