./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix033.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix033.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE --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 eb14ef07a6b26c4855460091e3932f356dd44c86cf5744c08658c1a06a447e8e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-e943c26 [2021-10-24 10:19:44,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:19:44,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:19:44,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:19:44,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:19:44,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:19:44,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:19:44,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:19:44,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:19:44,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:19:44,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:19:44,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:19:44,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:19:44,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:19:44,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:19:44,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:19:44,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:19:44,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:19:44,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:19:44,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:19:44,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:19:44,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:19:44,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:19:44,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:19:44,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:19:44,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:19:44,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:19:44,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:19:44,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:19:44,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:19:44,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:19:44,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:19:44,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:19:44,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:19:44,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:19:44,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:19:44,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:19:44,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:19:44,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:19:44,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:19:44,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:19:44,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:19:44,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:19:44,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:19:44,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:19:44,432 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:19:44,432 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:19:44,433 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:19:44,433 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:19:44,439 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:19:44,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:19:44,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:19:44,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:19:44,441 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:19:44,441 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:19:44,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:19:44,441 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:19:44,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:19:44,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:19:44,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:19:44,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:19:44,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:19:44,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:19:44,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:19:44,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:19:44,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:19:44,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:19:44,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:19:44,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:19:44,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:19:44,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:19:44,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:19:44,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:19:44,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:19:44,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:19:44,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:19:44,446 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:19:44,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:19:44,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:19:44,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:19:44,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:19:44,447 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_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb14ef07a6b26c4855460091e3932f356dd44c86cf5744c08658c1a06a447e8e [2021-10-24 10:19:44,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:19:44,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:19:44,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:19:44,750 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:19:44,750 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:19:44,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/pthread-wmm/mix033.opt.i [2021-10-24 10:19:44,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/data/8cd65c2ac/bcecee6ddc21420584d372ba2aee9aa8/FLAG23f64b962 [2021-10-24 10:19:45,396 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:19:45,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/sv-benchmarks/c/pthread-wmm/mix033.opt.i [2021-10-24 10:19:45,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/data/8cd65c2ac/bcecee6ddc21420584d372ba2aee9aa8/FLAG23f64b962 [2021-10-24 10:19:45,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/data/8cd65c2ac/bcecee6ddc21420584d372ba2aee9aa8 [2021-10-24 10:19:45,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:19:45,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:19:45,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:19:45,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:19:45,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:19:45,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:45" (1/1) ... [2021-10-24 10:19:45,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edec726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:45, skipping insertion in model container [2021-10-24 10:19:45,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:45" (1/1) ... [2021-10-24 10:19:45,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:19:45,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:19:45,969 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_86a53e6a-a85d-43e4-a0ab-692664f0410f/sv-benchmarks/c/pthread-wmm/mix033.opt.i[944,957] [2021-10-24 10:19:46,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:19:46,297 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:19:46,317 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_86a53e6a-a85d-43e4-a0ab-692664f0410f/sv-benchmarks/c/pthread-wmm/mix033.opt.i[944,957] [2021-10-24 10:19:46,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:19:46,436 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:19:46,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46 WrapperNode [2021-10-24 10:19:46,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:19:46,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:19:46,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:19:46,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:19:46,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:19:46,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:19:46,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:19:46,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:19:46,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:19:46,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:19:46,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:19:46,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:19:46,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:19:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:46,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:19:46,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:19:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:19:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 10:19:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:19:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:19:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-24 10:19:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-24 10:19:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-24 10:19:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-24 10:19:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-24 10:19:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-24 10:19:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:19:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 10:19:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:19:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:19:46,708 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 10:19:48,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:19:48,382 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 10:19:48,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:48 BoogieIcfgContainer [2021-10-24 10:19:48,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:19:48,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:19:48,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:19:48,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:19:48,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:19:45" (1/3) ... [2021-10-24 10:19:48,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615d9191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:48, skipping insertion in model container [2021-10-24 10:19:48,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46" (2/3) ... [2021-10-24 10:19:48,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615d9191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:48, skipping insertion in model container [2021-10-24 10:19:48,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:48" (3/3) ... [2021-10-24 10:19:48,395 INFO L111 eAbstractionObserver]: Analyzing ICFG mix033.opt.i [2021-10-24 10:19:48,401 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 10:19:48,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:19:48,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:19:48,402 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 10:19:48,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,456 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,456 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,457 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,479 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,489 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,489 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,489 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,489 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,490 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,490 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,494 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,494 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,501 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,520 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,521 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:48,522 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-24 10:19:48,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:19:48,589 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:19:48,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 10:19:48,604 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 10:19:48,615 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 113 transitions, 241 flow [2021-10-24 10:19:48,617 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 113 transitions, 241 flow [2021-10-24 10:19:48,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 113 transitions, 241 flow [2021-10-24 10:19:48,705 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2021-10-24 10:19:48,705 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-24 10:19:48,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 110 events. 2/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-24 10:19:48,714 INFO L116 LiptonReduction]: Number of co-enabled transitions 2000 [2021-10-24 10:19:54,872 INFO L131 LiptonReduction]: Checked pairs total: 4863 [2021-10-24 10:19:54,873 INFO L133 LiptonReduction]: Total number of compositions: 97 [2021-10-24 10:19:54,881 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 26 transitions, 67 flow [2021-10-24 10:19:54,947 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 650 states, 647 states have (on average 3.1035548686244203) internal successors, (2008), 649 states have internal predecessors, (2008), 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) [2021-10-24 10:19:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 650 states, 647 states have (on average 3.1035548686244203) internal successors, (2008), 649 states have internal predecessors, (2008), 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) [2021-10-24 10:19:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:19:54,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:54,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:54,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:54,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:54,964 INFO L82 PathProgramCache]: Analyzing trace with hash -15005058, now seen corresponding path program 1 times [2021-10-24 10:19:54,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:54,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196469922] [2021-10-24 10:19:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:54,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:55,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:55,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196469922] [2021-10-24 10:19:55,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196469922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:55,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:55,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:19:55,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014983103] [2021-10-24 10:19:55,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:19:55,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:19:55,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:55,304 INFO L87 Difference]: Start difference. First operand has 650 states, 647 states have (on average 3.1035548686244203) internal successors, (2008), 649 states have internal predecessors, (2008), 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) [2021-10-24 10:19:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:55,403 INFO L93 Difference]: Finished difference Result 550 states and 1673 transitions. [2021-10-24 10:19:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:19:55,405 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 [2021-10-24 10:19:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:55,428 INFO L225 Difference]: With dead ends: 550 [2021-10-24 10:19:55,428 INFO L226 Difference]: Without dead ends: 530 [2021-10-24 10:19:55,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-24 10:19:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2021-10-24 10:19:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.0661625708884688) internal successors, (1622), 529 states have internal predecessors, (1622), 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) [2021-10-24 10:19:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1622 transitions. [2021-10-24 10:19:55,520 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1622 transitions. Word has length 7 [2021-10-24 10:19:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:55,521 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1622 transitions. [2021-10-24 10:19:55,522 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) [2021-10-24 10:19:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1622 transitions. [2021-10-24 10:19:55,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:19:55,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:55,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:55,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:19:55,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1534917807, now seen corresponding path program 1 times [2021-10-24 10:19:55,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:55,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714246569] [2021-10-24 10:19:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:55,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:55,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:55,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714246569] [2021-10-24 10:19:55,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714246569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:55,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:55,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:19:55,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745341996] [2021-10-24 10:19:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:19:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:19:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:55,620 INFO L87 Difference]: Start difference. First operand 530 states and 1622 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-24 10:19:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:55,634 INFO L93 Difference]: Finished difference Result 518 states and 1576 transitions. [2021-10-24 10:19:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:19:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-24 10:19:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:55,641 INFO L225 Difference]: With dead ends: 518 [2021-10-24 10:19:55,641 INFO L226 Difference]: Without dead ends: 518 [2021-10-24 10:19:55,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-24 10:19:55,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2021-10-24 10:19:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 3.0483558994197293) internal successors, (1576), 517 states have internal predecessors, (1576), 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) [2021-10-24 10:19:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1576 transitions. [2021-10-24 10:19:55,677 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1576 transitions. Word has length 9 [2021-10-24 10:19:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:55,678 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 1576 transitions. [2021-10-24 10:19:55,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-24 10:19:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1576 transitions. [2021-10-24 10:19:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:19:55,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:55,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:55,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:19:55,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:55,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1352754862, now seen corresponding path program 1 times [2021-10-24 10:19:55,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:55,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469064017] [2021-10-24 10:19:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:55,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:55,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:55,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469064017] [2021-10-24 10:19:55,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469064017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:55,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:55,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:19:55,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023207828] [2021-10-24 10:19:55,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:19:55,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:19:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:55,799 INFO L87 Difference]: Start difference. First operand 518 states and 1576 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-24 10:19:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:55,809 INFO L93 Difference]: Finished difference Result 482 states and 1450 transitions. [2021-10-24 10:19:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:19:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2021-10-24 10:19:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:55,816 INFO L225 Difference]: With dead ends: 482 [2021-10-24 10:19:55,816 INFO L226 Difference]: Without dead ends: 482 [2021-10-24 10:19:55,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-24 10:19:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-10-24 10:19:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 3.0145530145530146) internal successors, (1450), 481 states have internal predecessors, (1450), 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) [2021-10-24 10:19:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1450 transitions. [2021-10-24 10:19:55,839 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1450 transitions. Word has length 10 [2021-10-24 10:19:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:55,839 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1450 transitions. [2021-10-24 10:19:55,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-24 10:19:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1450 transitions. [2021-10-24 10:19:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:19:55,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:55,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:55,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:19:55,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash 85216590, now seen corresponding path program 1 times [2021-10-24 10:19:55,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:55,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529837012] [2021-10-24 10:19:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:55,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:55,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:55,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529837012] [2021-10-24 10:19:55,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529837012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:55,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:55,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:19:55,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818255408] [2021-10-24 10:19:55,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:19:55,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:19:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:55,962 INFO L87 Difference]: Start difference. First operand 482 states and 1450 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-10-24 10:19:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:56,013 INFO L93 Difference]: Finished difference Result 602 states and 1740 transitions. [2021-10-24 10:19:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:19:56,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-10-24 10:19:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:56,023 INFO L225 Difference]: With dead ends: 602 [2021-10-24 10:19:56,023 INFO L226 Difference]: Without dead ends: 566 [2021-10-24 10:19:56,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-24 10:19:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 494. [2021-10-24 10:19:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 2.945233265720081) internal successors, (1452), 493 states have internal predecessors, (1452), 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) [2021-10-24 10:19:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1452 transitions. [2021-10-24 10:19:56,047 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1452 transitions. Word has length 11 [2021-10-24 10:19:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:56,048 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1452 transitions. [2021-10-24 10:19:56,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-10-24 10:19:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1452 transitions. [2021-10-24 10:19:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:19:56,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:56,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:56,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:19:56,056 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash 288770751, now seen corresponding path program 1 times [2021-10-24 10:19:56,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:56,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195853649] [2021-10-24 10:19:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:56,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:56,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:56,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195853649] [2021-10-24 10:19:56,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195853649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:56,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:56,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:19:56,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881337129] [2021-10-24 10:19:56,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:19:56,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:56,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:19:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:56,231 INFO L87 Difference]: Start difference. First operand 494 states and 1452 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-10-24 10:19:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:56,273 INFO L93 Difference]: Finished difference Result 480 states and 1242 transitions. [2021-10-24 10:19:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:19:56,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-10-24 10:19:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:56,277 INFO L225 Difference]: With dead ends: 480 [2021-10-24 10:19:56,277 INFO L226 Difference]: Without dead ends: 348 [2021-10-24 10:19:56,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-24 10:19:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2021-10-24 10:19:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 2.5129682997118157) internal successors, (872), 347 states have internal predecessors, (872), 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) [2021-10-24 10:19:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 872 transitions. [2021-10-24 10:19:56,292 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 872 transitions. Word has length 13 [2021-10-24 10:19:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:56,292 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 872 transitions. [2021-10-24 10:19:56,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-10-24 10:19:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 872 transitions. [2021-10-24 10:19:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:19:56,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:56,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:56,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:19:56,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1887384164, now seen corresponding path program 1 times [2021-10-24 10:19:56,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:56,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632700280] [2021-10-24 10:19:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:56,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:56,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:56,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632700280] [2021-10-24 10:19:56,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632700280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:56,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:56,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:19:56,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879358014] [2021-10-24 10:19:56,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:19:56,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:19:56,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:56,481 INFO L87 Difference]: Start difference. First operand 348 states and 872 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) [2021-10-24 10:19:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:56,533 INFO L93 Difference]: Finished difference Result 289 states and 666 transitions. [2021-10-24 10:19:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:19:56,534 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 [2021-10-24 10:19:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:56,536 INFO L225 Difference]: With dead ends: 289 [2021-10-24 10:19:56,536 INFO L226 Difference]: Without dead ends: 221 [2021-10-24 10:19:56,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:19:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-24 10:19:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2021-10-24 10:19:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.256880733944954) internal successors, (492), 218 states have internal predecessors, (492), 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) [2021-10-24 10:19:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 492 transitions. [2021-10-24 10:19:56,545 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 492 transitions. Word has length 15 [2021-10-24 10:19:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:56,545 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 492 transitions. [2021-10-24 10:19:56,545 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) [2021-10-24 10:19:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 492 transitions. [2021-10-24 10:19:56,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:19:56,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:56,546 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:56,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:19:56,547 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash -797049518, now seen corresponding path program 1 times [2021-10-24 10:19:56,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:56,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959349733] [2021-10-24 10:19:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:56,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:56,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:56,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959349733] [2021-10-24 10:19:56,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959349733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:56,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:56,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:19:56,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050408544] [2021-10-24 10:19:56,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:19:56,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:19:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:56,649 INFO L87 Difference]: Start difference. First operand 219 states and 492 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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) [2021-10-24 10:19:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:56,659 INFO L93 Difference]: Finished difference Result 305 states and 667 transitions. [2021-10-24 10:19:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:19:56,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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 [2021-10-24 10:19:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:56,662 INFO L225 Difference]: With dead ends: 305 [2021-10-24 10:19:56,662 INFO L226 Difference]: Without dead ends: 207 [2021-10-24 10:19:56,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-24 10:19:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-10-24 10:19:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 2.142156862745098) internal successors, (437), 204 states have internal predecessors, (437), 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) [2021-10-24 10:19:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 437 transitions. [2021-10-24 10:19:56,670 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 437 transitions. Word has length 18 [2021-10-24 10:19:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:56,670 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 437 transitions. [2021-10-24 10:19:56,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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) [2021-10-24 10:19:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 437 transitions. [2021-10-24 10:19:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:19:56,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:56,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:56,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:19:56,672 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:56,672 INFO L82 PathProgramCache]: Analyzing trace with hash -474695986, now seen corresponding path program 2 times [2021-10-24 10:19:56,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:56,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695744523] [2021-10-24 10:19:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:56,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:56,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:56,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695744523] [2021-10-24 10:19:56,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695744523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:56,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:56,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:19:56,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066179886] [2021-10-24 10:19:56,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:19:56,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:19:56,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:19:56,830 INFO L87 Difference]: Start difference. First operand 205 states and 437 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) [2021-10-24 10:19:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:56,882 INFO L93 Difference]: Finished difference Result 186 states and 398 transitions. [2021-10-24 10:19:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:19:56,883 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 [2021-10-24 10:19:56,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:56,885 INFO L225 Difference]: With dead ends: 186 [2021-10-24 10:19:56,885 INFO L226 Difference]: Without dead ends: 109 [2021-10-24 10:19:56,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:19:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-24 10:19:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-24 10:19:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.064814814814815) internal successors, (223), 108 states have internal predecessors, (223), 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) [2021-10-24 10:19:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 223 transitions. [2021-10-24 10:19:56,890 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 223 transitions. Word has length 18 [2021-10-24 10:19:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:56,890 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 223 transitions. [2021-10-24 10:19:56,890 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) [2021-10-24 10:19:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 223 transitions. [2021-10-24 10:19:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:19:56,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:56,892 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:56,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:19:56,892 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:56,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:56,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1346667426, now seen corresponding path program 1 times [2021-10-24 10:19:56,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:56,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131845721] [2021-10-24 10:19:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:56,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:57,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:57,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131845721] [2021-10-24 10:19:57,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131845721] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:57,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:57,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:19:57,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776131886] [2021-10-24 10:19:57,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:19:57,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:19:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:57,022 INFO L87 Difference]: Start difference. First operand 109 states and 223 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:57,071 INFO L93 Difference]: Finished difference Result 140 states and 281 transitions. [2021-10-24 10:19:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:19:57,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-24 10:19:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:57,073 INFO L225 Difference]: With dead ends: 140 [2021-10-24 10:19:57,073 INFO L226 Difference]: Without dead ends: 106 [2021-10-24 10:19:57,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-24 10:19:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2021-10-24 10:19:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.9659090909090908) internal successors, (173), 88 states have internal predecessors, (173), 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) [2021-10-24 10:19:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 173 transitions. [2021-10-24 10:19:57,079 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 173 transitions. Word has length 21 [2021-10-24 10:19:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:57,079 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 173 transitions. [2021-10-24 10:19:57,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 173 transitions. [2021-10-24 10:19:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:19:57,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:57,081 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:57,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:19:57,081 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:57,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:57,082 INFO L82 PathProgramCache]: Analyzing trace with hash 247521118, now seen corresponding path program 2 times [2021-10-24 10:19:57,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:57,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759679858] [2021-10-24 10:19:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:57,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:57,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:57,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759679858] [2021-10-24 10:19:57,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759679858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:57,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:57,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:19:57,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131705086] [2021-10-24 10:19:57,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:19:57,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:57,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:19:57,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:57,171 INFO L87 Difference]: Start difference. First operand 89 states and 173 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:57,185 INFO L93 Difference]: Finished difference Result 124 states and 239 transitions. [2021-10-24 10:19:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:19:57,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-24 10:19:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:57,186 INFO L225 Difference]: With dead ends: 124 [2021-10-24 10:19:57,186 INFO L226 Difference]: Without dead ends: 48 [2021-10-24 10:19:57,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-24 10:19:57,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-24 10:19:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 47 states have internal predecessors, (81), 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) [2021-10-24 10:19:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 81 transitions. [2021-10-24 10:19:57,189 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 81 transitions. Word has length 21 [2021-10-24 10:19:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:57,189 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 81 transitions. [2021-10-24 10:19:57,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 81 transitions. [2021-10-24 10:19:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:19:57,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:57,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:57,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-24 10:19:57,191 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-24 10:19:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:57,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1139035652, now seen corresponding path program 3 times [2021-10-24 10:19:57,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:57,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850440284] [2021-10-24 10:19:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:57,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:19:57,246 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:19:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:19:57,389 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:19:57,389 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:19:57,391 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:57,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:57,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:19:57,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:19:57,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:19:57,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:57,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-24 10:19:57,399 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:19:57,400 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:19:57,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:19:57 BasicIcfg [2021-10-24 10:19:57,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:19:57,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:19:57,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:19:57,520 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:19:57,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:48" (3/4) ... [2021-10-24 10:19:57,522 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:19:57,621 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:19:57,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:19:57,623 INFO L168 Benchmark]: Toolchain (without parser) took 11944.29 ms. Allocated memory was 107.0 MB in the beginning and 222.3 MB in the end (delta: 115.3 MB). Free memory was 63.5 MB in the beginning and 86.0 MB in the end (delta: -22.5 MB). Peak memory consumption was 91.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:57,623 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:19:57,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.14 ms. Allocated memory is still 107.0 MB. Free memory was 63.3 MB in the beginning and 68.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:57,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.04 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 66.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:57,625 INFO L168 Benchmark]: Boogie Preprocessor took 70.96 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 63.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:57,625 INFO L168 Benchmark]: RCFGBuilder took 1787.43 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 63.9 MB in the beginning and 112.4 MB in the end (delta: -48.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:57,626 INFO L168 Benchmark]: TraceAbstraction took 9131.65 ms. Allocated memory was 148.9 MB in the beginning and 222.3 MB in the end (delta: 73.4 MB). Free memory was 111.4 MB in the beginning and 101.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 84.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:57,626 INFO L168 Benchmark]: Witness Printer took 101.79 ms. Allocated memory is still 222.3 MB. Free memory was 101.7 MB in the beginning and 86.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:57,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 758.14 ms. Allocated memory is still 107.0 MB. Free memory was 63.3 MB in the beginning and 68.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.04 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 66.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.96 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 63.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1787.43 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 63.9 MB in the beginning and 112.4 MB in the end (delta: -48.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9131.65 ms. Allocated memory was 148.9 MB in the beginning and 222.3 MB in the end (delta: 73.4 MB). Free memory was 111.4 MB in the beginning and 101.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 84.2 MB. Max. memory is 16.1 GB. * Witness Printer took 101.79 ms. Allocated memory is still 222.3 MB. Free memory was 101.7 MB in the beginning and 86.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6255.5ms, 121 PlacesBefore, 36 PlacesAfterwards, 113 TransitionsBefore, 26 TransitionsAfterwards, 2000 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 4863 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2462, positive: 2285, positive conditional: 0, positive unconditional: 2285, negative: 177, negative conditional: 0, negative unconditional: 177, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1380, positive: 1331, positive conditional: 0, positive unconditional: 1331, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1380, positive: 1323, positive conditional: 0, positive unconditional: 1323, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 374, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 359, negative conditional: 0, negative unconditional: 359, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2462, positive: 954, positive conditional: 0, positive unconditional: 954, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 1380, unknown conditional: 0, unknown unconditional: 1380] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - 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_p1_EAX = 0; [L713] 0 int __unbuffered_p1_EBX = 0; [L715] 0 int __unbuffered_p2_EAX = 0; [L717] 0 int __unbuffered_p2_EBX = 0; [L719] 0 int a = 0; [L721] 0 int b = 0; [L722] 0 _Bool main$tmp_guard0; [L723] 0 _Bool main$tmp_guard1; [L725] 0 int x = 0; [L727] 0 int y = 0; [L729] 0 int z = 0; [L730] 0 _Bool z$flush_delayed; [L731] 0 int z$mem_tmp; [L732] 0 _Bool z$r_buff0_thd0; [L733] 0 _Bool z$r_buff0_thd1; [L734] 0 _Bool z$r_buff0_thd2; [L735] 0 _Bool z$r_buff0_thd3; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$read_delayed; [L741] 0 int *z$read_delayed_var; [L742] 0 int z$w_buff0; [L743] 0 _Bool z$w_buff0_used; [L744] 0 int z$w_buff1; [L745] 0 _Bool z$w_buff1_used; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L843] 0 pthread_t t876; [L844] FCALL, FORK 0 pthread_create(&t876, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L845] 0 pthread_t t877; [L846] FCALL, FORK 0 pthread_create(&t877, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L847] 0 pthread_t t878; [L848] FCALL, FORK 0 pthread_create(&t878, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L800] 3 z$w_buff1 = z$w_buff0 [L801] 3 z$w_buff0 = 1 [L802] 3 z$w_buff1_used = z$w_buff0_used [L803] 3 z$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L805] 3 z$r_buff1_thd0 = z$r_buff0_thd0 [L806] 3 z$r_buff1_thd1 = z$r_buff0_thd1 [L807] 3 z$r_buff1_thd2 = z$r_buff0_thd2 [L808] 3 z$r_buff1_thd3 = z$r_buff0_thd3 [L809] 3 z$r_buff0_thd3 = (_Bool)1 [L812] 3 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L815] 3 __unbuffered_p2_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L818] 3 __unbuffered_p2_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L751] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L754] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L766] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L769] 2 y = 1 [L772] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L775] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L776] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L777] 2 z$flush_delayed = weak$$choice2 [L778] 2 z$mem_tmp = z [L779] EXPR 2 !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff1) [L779] 2 z = !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff1) [L780] EXPR 2 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff0)) [L780] EXPR 2 !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff0) [L780] EXPR 2 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff0)) [L780] 2 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff0)) [L781] EXPR 2 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff1 : z$w_buff1)) [L781] EXPR 2 !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff1 : z$w_buff1) [L781] EXPR 2 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff1 : z$w_buff1)) [L781] 2 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff1 : z$w_buff1)) [L782] EXPR 2 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used)) [L782] EXPR 2 !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used) [L782] EXPR 2 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used)) [L782] 2 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used)) [L783] EXPR 2 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L783] EXPR 2 !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0) [L783] EXPR 2 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L783] 2 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L784] EXPR 2 weak$$choice2 ? z$r_buff0_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff0_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2)) [L784] EXPR 2 !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff0_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2) [L784] EXPR 2 weak$$choice2 ? z$r_buff0_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff0_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2)) [L784] 2 z$r_buff0_thd2 = weak$$choice2 ? z$r_buff0_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff0_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2)) [L785] EXPR 2 weak$$choice2 ? z$r_buff1_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff1_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L785] EXPR 2 !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff1_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0) [L785] EXPR 2 weak$$choice2 ? z$r_buff1_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff1_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L785] 2 z$r_buff1_thd2 = weak$$choice2 ? z$r_buff1_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff1_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L786] 2 __unbuffered_p1_EBX = z [L787] EXPR 2 z$flush_delayed ? z$mem_tmp : z [L787] 2 z = z$flush_delayed ? z$mem_tmp : z [L788] 2 z$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L793] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L795] 2 return 0; [L759] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L761] 1 return 0; [L821] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L821] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L822] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L822] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L823] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L823] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L824] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L824] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L825] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L825] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L828] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L830] 3 return 0; [L850] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L854] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L854] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L854] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L854] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L855] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L855] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L856] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L856] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L857] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L857] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L858] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L858] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L861] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - 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: 846]: 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: 848]: 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: 844]: 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, 142 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8815.3ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 27.2ms, AutomataDifference: 493.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6357.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 261 SDtfs, 216 SDslu, 303 SDs, 0 SdLazy, 122 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 177.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 124.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=650occurred in iteration=0, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 197.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 93 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 46.7ms SsaConstructionTime, 503.3ms SatisfiabilityAnalysisTime, 737.4ms InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 549 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 10:19:57,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a53e6a-a85d-43e4-a0ab-692664f0410f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...