./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:34:50,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:34:50,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:34:50,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:34:50,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:34:50,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:34:50,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:34:50,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:34:50,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:34:50,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:34:50,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:34:50,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:34:50,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:34:50,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:34:50,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:34:50,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:34:50,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:34:50,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:34:50,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:34:50,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:34:50,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:34:50,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:34:50,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:34:50,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:34:50,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:34:50,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:34:50,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:34:50,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:34:50,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:34:50,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:34:50,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:34:50,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:34:50,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:34:50,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:34:50,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:34:50,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:34:50,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:34:50,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:34:50,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:34:50,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:34:50,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:34:50,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:34:50,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:34:50,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:34:50,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:34:50,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:34:50,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:34:50,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:34:50,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:34:50,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:34:50,563 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:34:50,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:34:50,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:34:50,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:34:50,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:34:50,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:34:50,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:34:50,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:34:50,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:34:50,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:34:50,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:34:50,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:34:50,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:34:50,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:34:50,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:34:50,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:34:50,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:34:50,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:34:50,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:34:50,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:34:50,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:34:50,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:34:50,567 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:34:50,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:34:50,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:34:50,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:34:50,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2021-12-06 23:34:50,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:34:50,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:34:50,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:34:50,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:34:50,792 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:34:50,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2021-12-06 23:34:50,834 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/data/d0119bdd4/ff19746514784546aa6aea68f5f6b93f/FLAG0432f9f1a [2021-12-06 23:34:51,249 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:34:51,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2021-12-06 23:34:51,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/data/d0119bdd4/ff19746514784546aa6aea68f5f6b93f/FLAG0432f9f1a [2021-12-06 23:34:51,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/data/d0119bdd4/ff19746514784546aa6aea68f5f6b93f [2021-12-06 23:34:51,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:34:51,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:34:51,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:34:51,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:34:51,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:34:51,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5587620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51, skipping insertion in model container [2021-12-06 23:34:51,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:34:51,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:34:51,423 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 23:34:51,501 WARN L230 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_66a0c72d-1be2-4306-80a8-ade89940108a/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i[30494,30507] [2021-12-06 23:34:51,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:34:51,512 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:34:51,523 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 23:34:51,537 WARN L230 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_66a0c72d-1be2-4306-80a8-ade89940108a/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i[30494,30507] [2021-12-06 23:34:51,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:34:51,563 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:34:51,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51 WrapperNode [2021-12-06 23:34:51,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:34:51,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:34:51,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:34:51,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:34:51,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,592 INFO L137 Inliner]: procedures = 170, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-12-06 23:34:51,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:34:51,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:34:51,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:34:51,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:34:51,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:34:51,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:34:51,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:34:51,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:34:51,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (1/1) ... [2021-12-06 23:34:51,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:34:51,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:34:51,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:34:51,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a0c72d-1be2-4306-80a8-ade89940108a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:34:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-12-06 23:34:51,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-12-06 23:34:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:34:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 23:34:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:34:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:34:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:34:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:34:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 23:34:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:34:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:34:51,687 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 23:34:51,760 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:34:51,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:34:51,826 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:34:51,838 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:34:51,838 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:34:51,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:34:51 BoogieIcfgContainer [2021-12-06 23:34:51,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:34:51,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:34:51,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:34:51,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:34:51,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:34:51" (1/3) ... [2021-12-06 23:34:51,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4937e2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:34:51, skipping insertion in model container [2021-12-06 23:34:51,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:34:51" (2/3) ... [2021-12-06 23:34:51,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4937e2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:34:51, skipping insertion in model container [2021-12-06 23:34:51,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:34:51" (3/3) ... [2021-12-06 23:34:51,846 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2021-12-06 23:34:51,850 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 23:34:51,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:34:51,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:34:51,851 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 23:34:51,867 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,867 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,867 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,867 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,867 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,867 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,868 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,868 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,868 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,868 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,868 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,869 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,871 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,871 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,871 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,871 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:51,872 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:34:51,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:34:51,913 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=PETRI_NET, 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 [2021-12-06 23:34:51,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-06 23:34:51,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 79 flow [2021-12-06 23:34:51,945 INFO L129 PetriNetUnfolder]: 2/48 cut-off events. [2021-12-06 23:34:51,945 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:51,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 48 events. 2/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2021-12-06 23:34:51,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 79 flow [2021-12-06 23:34:51,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 37 transitions, 79 flow [2021-12-06 23:34:51,961 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-12-06 23:34:51,961 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:51,961 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:51,962 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:51,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:34:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:51,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1096869042, now seen corresponding path program 1 times [2021-12-06 23:34:51,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023376140] [2021-12-06 23:34:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:51,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:52,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:52,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023376140] [2021-12-06 23:34:52,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023376140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:52,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:52,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:52,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706142602] [2021-12-06 23:34:52,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:52,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:52,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:52,172 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 37 [2021-12-06 23:34:52,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-12-06 23:34:52,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:52,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 37 [2021-12-06 23:34:52,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:52,199 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-12-06 23:34:52,199 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 23:34:52,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 33 events. 0/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 4/37 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-12-06 23:34:52,201 INFO L132 encePairwiseOnDemand]: 32/37 looper letters, 2 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2021-12-06 23:34:52,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 71 flow [2021-12-06 23:34:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2021-12-06 23:34:52,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8918918918918919 [2021-12-06 23:34:52,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 99 transitions. [2021-12-06 23:34:52,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 99 transitions. [2021-12-06 23:34:52,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:52,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 99 transitions. [2021-12-06 23:34:52,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-12-06 23:34:52,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2021-12-06 23:34:52,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2021-12-06 23:34:52,220 INFO L186 Difference]: Start difference. First operand has 39 places, 37 transitions, 79 flow. Second operand 3 states and 99 transitions. [2021-12-06 23:34:52,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 71 flow [2021-12-06 23:34:52,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 71 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 23:34:52,225 INFO L242 Difference]: Finished difference. Result has 34 places, 29 transitions, 67 flow [2021-12-06 23:34:52,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2021-12-06 23:34:52,229 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2021-12-06 23:34:52,229 INFO L470 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 67 flow [2021-12-06 23:34:52,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-12-06 23:34:52,229 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,230 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:34:52,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:34:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,231 INFO L85 PathProgramCache]: Analyzing trace with hash 750747050, now seen corresponding path program 1 times [2021-12-06 23:34:52,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84890936] [2021-12-06 23:34:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:52,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:34:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:52,278 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:34:52,278 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:34:52,279 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-12-06 23:34:52,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-12-06 23:34:52,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-12-06 23:34:52,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:34:52,284 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 23:34:52,286 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:34:52,286 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-12-06 23:34:52,291 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,291 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,291 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,291 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,293 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,294 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,294 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,294 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,294 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,294 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,294 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,294 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,295 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,295 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,295 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,295 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,295 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,296 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:34:52,299 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:34:52,300 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=PETRI_NET, 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 [2021-12-06 23:34:52,300 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 23:34:52,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 102 flow [2021-12-06 23:34:52,317 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2021-12-06 23:34:52,317 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 23:34:52,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 3/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2021-12-06 23:34:52,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 102 flow [2021-12-06 23:34:52,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 102 flow [2021-12-06 23:34:52,324 INFO L129 PetriNetUnfolder]: 2/32 cut-off events. [2021-12-06 23:34:52,324 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:52,324 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,325 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:34:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,325 INFO L85 PathProgramCache]: Analyzing trace with hash 816539065, now seen corresponding path program 1 times [2021-12-06 23:34:52,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536427789] [2021-12-06 23:34:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:52,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:52,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536427789] [2021-12-06 23:34:52,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536427789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:52,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:52,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:52,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715410082] [2021-12-06 23:34:52,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:52,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:52,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:52,373 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 45 [2021-12-06 23:34:52,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-06 23:34:52,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:52,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 45 [2021-12-06 23:34:52,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:52,406 INFO L129 PetriNetUnfolder]: 6/75 cut-off events. [2021-12-06 23:34:52,406 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-06 23:34:52,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 75 events. 6/75 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 2 based on Foata normal form. 15/87 useless extension candidates. Maximal degree in co-relation 37. Up to 13 conditions per place. [2021-12-06 23:34:52,408 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 11 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2021-12-06 23:34:52,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 131 flow [2021-12-06 23:34:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-12-06 23:34:52,410 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9037037037037037 [2021-12-06 23:34:52,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-12-06 23:34:52,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-12-06 23:34:52,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:52,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-12-06 23:34:52,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-12-06 23:34:52,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2021-12-06 23:34:52,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2021-12-06 23:34:52,414 INFO L186 Difference]: Start difference. First operand has 49 places, 45 transitions, 102 flow. Second operand 3 states and 122 transitions. [2021-12-06 23:34:52,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 131 flow [2021-12-06 23:34:52,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 129 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-12-06 23:34:52,417 INFO L242 Difference]: Finished difference. Result has 46 places, 40 transitions, 107 flow [2021-12-06 23:34:52,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2021-12-06 23:34:52,418 INFO L334 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2021-12-06 23:34:52,418 INFO L470 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 107 flow [2021-12-06 23:34:52,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-06 23:34:52,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,419 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:34:52,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:34:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash -217358121, now seen corresponding path program 1 times [2021-12-06 23:34:52,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289522027] [2021-12-06 23:34:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:52,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289522027] [2021-12-06 23:34:52,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289522027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:52,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:52,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:52,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148166045] [2021-12-06 23:34:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:52,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:52,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:52,482 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 45 [2021-12-06 23:34:52,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-06 23:34:52,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:52,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 45 [2021-12-06 23:34:52,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:52,509 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-12-06 23:34:52,510 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-12-06 23:34:52,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 74 events. 7/74 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 2 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 72. Up to 10 conditions per place. [2021-12-06 23:34:52,511 INFO L132 encePairwiseOnDemand]: 41/45 looper letters, 10 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2021-12-06 23:34:52,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 138 flow [2021-12-06 23:34:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2021-12-06 23:34:52,513 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2021-12-06 23:34:52,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2021-12-06 23:34:52,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2021-12-06 23:34:52,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:52,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2021-12-06 23:34:52,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-12-06 23:34:52,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2021-12-06 23:34:52,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2021-12-06 23:34:52,516 INFO L186 Difference]: Start difference. First operand has 46 places, 40 transitions, 107 flow. Second operand 3 states and 116 transitions. [2021-12-06 23:34:52,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 138 flow [2021-12-06 23:34:52,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:34:52,519 INFO L242 Difference]: Finished difference. Result has 46 places, 40 transitions, 110 flow [2021-12-06 23:34:52,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2021-12-06 23:34:52,520 INFO L334 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2021-12-06 23:34:52,520 INFO L470 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 110 flow [2021-12-06 23:34:52,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-06 23:34:52,521 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,521 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:34:52,521 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:34:52,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1984575946, now seen corresponding path program 1 times [2021-12-06 23:34:52,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274376827] [2021-12-06 23:34:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:52,541 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:34:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:52,559 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:34:52,560 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:34:52,560 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2021-12-06 23:34:52,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-12-06 23:34:52,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-12-06 23:34:52,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-12-06 23:34:52,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:34:52,561 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:34:52,561 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:34:52,561 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-12-06 23:34:52,567 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,568 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,568 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,568 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,568 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,568 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,568 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,568 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,569 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,571 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,571 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,572 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,572 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,572 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,572 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,573 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,573 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,574 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,574 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,574 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,574 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,575 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:34:52,577 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:34:52,579 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=PETRI_NET, 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 [2021-12-06 23:34:52,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-06 23:34:52,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 53 transitions, 127 flow [2021-12-06 23:34:52,593 INFO L129 PetriNetUnfolder]: 4/90 cut-off events. [2021-12-06 23:34:52,593 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-06 23:34:52,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 90 events. 4/90 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 73. Up to 8 conditions per place. [2021-12-06 23:34:52,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 53 transitions, 127 flow [2021-12-06 23:34:52,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 53 transitions, 127 flow [2021-12-06 23:34:52,598 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-12-06 23:34:52,599 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:52,599 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,599 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 23:34:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1995165472, now seen corresponding path program 1 times [2021-12-06 23:34:52,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592697096] [2021-12-06 23:34:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:52,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592697096] [2021-12-06 23:34:52,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592697096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:52,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:52,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:52,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947387388] [2021-12-06 23:34:52,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:52,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:52,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:52,631 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 53 [2021-12-06 23:34:52,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-12-06 23:34:52,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:52,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 53 [2021-12-06 23:34:52,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:52,687 INFO L129 PetriNetUnfolder]: 59/242 cut-off events. [2021-12-06 23:34:52,687 INFO L130 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2021-12-06 23:34:52,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 242 events. 59/242 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1125 event pairs, 23 based on Foata normal form. 60/274 useless extension candidates. Maximal degree in co-relation 108. Up to 95 conditions per place. [2021-12-06 23:34:52,690 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 17 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2021-12-06 23:34:52,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 183 flow [2021-12-06 23:34:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:52,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2021-12-06 23:34:52,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8930817610062893 [2021-12-06 23:34:52,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2021-12-06 23:34:52,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2021-12-06 23:34:52,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:52,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2021-12-06 23:34:52,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-12-06 23:34:52,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-12-06 23:34:52,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-12-06 23:34:52,694 INFO L186 Difference]: Start difference. First operand has 59 places, 53 transitions, 127 flow. Second operand 3 states and 142 transitions. [2021-12-06 23:34:52,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 183 flow [2021-12-06 23:34:52,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 175 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-12-06 23:34:52,697 INFO L242 Difference]: Finished difference. Result has 56 places, 49 transitions, 137 flow [2021-12-06 23:34:52,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2021-12-06 23:34:52,697 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2021-12-06 23:34:52,698 INFO L470 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 137 flow [2021-12-06 23:34:52,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-12-06 23:34:52,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,698 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:34:52,698 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 23:34:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1152270226, now seen corresponding path program 1 times [2021-12-06 23:34:52,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830065083] [2021-12-06 23:34:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:34:52,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:52,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830065083] [2021-12-06 23:34:52,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830065083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:52,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:52,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:52,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659059493] [2021-12-06 23:34:52,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:52,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:52,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:52,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:52,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 53 [2021-12-06 23:34:52,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-12-06 23:34:52,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:52,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 53 [2021-12-06 23:34:52,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:52,782 INFO L129 PetriNetUnfolder]: 53/239 cut-off events. [2021-12-06 23:34:52,782 INFO L130 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2021-12-06 23:34:52,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 239 events. 53/239 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1053 event pairs, 17 based on Foata normal form. 23/254 useless extension candidates. Maximal degree in co-relation 266. Up to 57 conditions per place. [2021-12-06 23:34:52,785 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 15 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2021-12-06 23:34:52,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 187 flow [2021-12-06 23:34:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-12-06 23:34:52,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8490566037735849 [2021-12-06 23:34:52,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-12-06 23:34:52,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-12-06 23:34:52,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:52,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-12-06 23:34:52,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-06 23:34:52,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-12-06 23:34:52,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-12-06 23:34:52,789 INFO L186 Difference]: Start difference. First operand has 56 places, 49 transitions, 137 flow. Second operand 3 states and 135 transitions. [2021-12-06 23:34:52,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 187 flow [2021-12-06 23:34:52,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:34:52,791 INFO L242 Difference]: Finished difference. Result has 55 places, 49 transitions, 142 flow [2021-12-06 23:34:52,791 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2021-12-06 23:34:52,792 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2021-12-06 23:34:52,792 INFO L470 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 142 flow [2021-12-06 23:34:52,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-12-06 23:34:52,792 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,792 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:34:52,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 23:34:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,793 INFO L85 PathProgramCache]: Analyzing trace with hash 620408523, now seen corresponding path program 1 times [2021-12-06 23:34:52,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399099974] [2021-12-06 23:34:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:52,808 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:34:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:52,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:34:52,821 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:34:52,821 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2021-12-06 23:34:52,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-12-06 23:34:52,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-12-06 23:34:52,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-12-06 23:34:52,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-12-06 23:34:52,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:34:52,822 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:34:52,822 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:34:52,823 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-12-06 23:34:52,828 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,829 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,830 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,831 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,832 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,833 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,834 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,834 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,834 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,834 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,834 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,834 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,835 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,835 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,835 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,835 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,835 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,835 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:52,836 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:34:52,837 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:34:52,837 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=PETRI_NET, 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 [2021-12-06 23:34:52,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-06 23:34:52,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 61 transitions, 154 flow [2021-12-06 23:34:52,849 INFO L129 PetriNetUnfolder]: 5/111 cut-off events. [2021-12-06 23:34:52,850 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-12-06 23:34:52,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 111 events. 5/111 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 154 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 98. Up to 10 conditions per place. [2021-12-06 23:34:52,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 61 transitions, 154 flow [2021-12-06 23:34:52,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 61 transitions, 154 flow [2021-12-06 23:34:52,853 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-12-06 23:34:52,853 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:52,853 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:52,854 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:52,854 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-06 23:34:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1251690471, now seen corresponding path program 1 times [2021-12-06 23:34:52,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902023767] [2021-12-06 23:34:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:52,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:52,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:52,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902023767] [2021-12-06 23:34:52,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902023767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:52,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:52,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:52,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271379757] [2021-12-06 23:34:52,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:52,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:52,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:52,881 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 61 [2021-12-06 23:34:52,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-12-06 23:34:52,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:52,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 61 [2021-12-06 23:34:52,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:53,028 INFO L129 PetriNetUnfolder]: 421/1000 cut-off events. [2021-12-06 23:34:53,028 INFO L130 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2021-12-06 23:34:53,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1000 events. 421/1000 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6350 event pairs, 231 based on Foata normal form. 243/1040 useless extension candidates. Maximal degree in co-relation 596. Up to 608 conditions per place. [2021-12-06 23:34:53,040 INFO L132 encePairwiseOnDemand]: 50/61 looper letters, 23 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2021-12-06 23:34:53,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 239 flow [2021-12-06 23:34:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2021-12-06 23:34:53,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8852459016393442 [2021-12-06 23:34:53,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2021-12-06 23:34:53,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2021-12-06 23:34:53,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:53,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2021-12-06 23:34:53,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-12-06 23:34:53,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-12-06 23:34:53,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-12-06 23:34:53,043 INFO L186 Difference]: Start difference. First operand has 69 places, 61 transitions, 154 flow. Second operand 3 states and 162 transitions. [2021-12-06 23:34:53,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 239 flow [2021-12-06 23:34:53,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 221 flow, removed 9 selfloop flow, removed 0 redundant places. [2021-12-06 23:34:53,046 INFO L242 Difference]: Finished difference. Result has 66 places, 58 transitions, 167 flow [2021-12-06 23:34:53,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2021-12-06 23:34:53,047 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2021-12-06 23:34:53,047 INFO L470 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 167 flow [2021-12-06 23:34:53,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-12-06 23:34:53,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:53,047 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:53,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:34:53,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-06 23:34:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1254058345, now seen corresponding path program 1 times [2021-12-06 23:34:53,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:53,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777291384] [2021-12-06 23:34:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:53,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:53,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:53,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777291384] [2021-12-06 23:34:53,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777291384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:53,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:53,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:53,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931786868] [2021-12-06 23:34:53,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:53,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:53,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:53,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:53,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:53,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 61 [2021-12-06 23:34:53,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-12-06 23:34:53,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:53,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 61 [2021-12-06 23:34:53,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:53,190 INFO L129 PetriNetUnfolder]: 283/916 cut-off events. [2021-12-06 23:34:53,190 INFO L130 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2021-12-06 23:34:53,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 916 events. 283/916 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6391 event pairs, 59 based on Foata normal form. 163/1046 useless extension candidates. Maximal degree in co-relation 1631. Up to 260 conditions per place. [2021-12-06 23:34:53,198 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 20 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2021-12-06 23:34:53,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 236 flow [2021-12-06 23:34:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2021-12-06 23:34:53,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2021-12-06 23:34:53,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2021-12-06 23:34:53,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2021-12-06 23:34:53,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:53,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2021-12-06 23:34:53,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-12-06 23:34:53,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-12-06 23:34:53,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-12-06 23:34:53,201 INFO L186 Difference]: Start difference. First operand has 66 places, 58 transitions, 167 flow. Second operand 3 states and 154 transitions. [2021-12-06 23:34:53,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 236 flow [2021-12-06 23:34:53,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:34:53,205 INFO L242 Difference]: Finished difference. Result has 64 places, 58 transitions, 174 flow [2021-12-06 23:34:53,205 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2021-12-06 23:34:53,206 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2021-12-06 23:34:53,206 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 174 flow [2021-12-06 23:34:53,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-12-06 23:34:53,206 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:53,206 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:53,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:34:53,207 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-06 23:34:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 744623267, now seen corresponding path program 1 times [2021-12-06 23:34:53,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:53,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665592528] [2021-12-06 23:34:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:53,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:53,224 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:34:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:53,242 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:34:53,242 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:34:53,242 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2021-12-06 23:34:53,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-12-06 23:34:53,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-12-06 23:34:53,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-12-06 23:34:53,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-12-06 23:34:53,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-12-06 23:34:53,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:34:53,244 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:34:53,244 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:34:53,244 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-12-06 23:34:53,251 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,251 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,251 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,251 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,252 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,253 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,254 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,255 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,255 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,255 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,255 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,255 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,255 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,255 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,256 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,257 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,258 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,258 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,258 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,258 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,258 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,258 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,258 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,259 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,259 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,259 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,259 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,260 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,260 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,260 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,260 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,261 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,261 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,261 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,261 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,261 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,261 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,262 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,262 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,262 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,262 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,262 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,262 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:53,263 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:34:53,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:34:53,265 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=PETRI_NET, 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 [2021-12-06 23:34:53,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-06 23:34:53,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 69 transitions, 183 flow [2021-12-06 23:34:53,280 INFO L129 PetriNetUnfolder]: 6/132 cut-off events. [2021-12-06 23:34:53,280 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-12-06 23:34:53,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 6/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 198 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 124. Up to 12 conditions per place. [2021-12-06 23:34:53,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 69 transitions, 183 flow [2021-12-06 23:34:53,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 69 transitions, 183 flow [2021-12-06 23:34:53,284 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-12-06 23:34:53,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:53,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:53,285 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:53,285 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 23:34:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1967171630, now seen corresponding path program 1 times [2021-12-06 23:34:53,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:53,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302582350] [2021-12-06 23:34:53,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:53,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:53,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:53,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302582350] [2021-12-06 23:34:53,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302582350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:53,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:53,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:53,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374830055] [2021-12-06 23:34:53,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:53,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:53,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:53,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 69 [2021-12-06 23:34:53,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2021-12-06 23:34:53,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:53,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 69 [2021-12-06 23:34:53,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:53,821 INFO L129 PetriNetUnfolder]: 2584/4717 cut-off events. [2021-12-06 23:34:53,822 INFO L130 PetriNetUnfolder]: For 3401/3401 co-relation queries the response was YES. [2021-12-06 23:34:53,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9803 conditions, 4717 events. 2584/4717 cut-off events. For 3401/3401 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33183 event pairs, 864 based on Foata normal form. 1064/4709 useless extension candidates. Maximal degree in co-relation 6342. Up to 3488 conditions per place. [2021-12-06 23:34:53,887 INFO L132 encePairwiseOnDemand]: 56/69 looper letters, 29 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2021-12-06 23:34:53,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 299 flow [2021-12-06 23:34:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2021-12-06 23:34:53,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-12-06 23:34:53,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2021-12-06 23:34:53,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2021-12-06 23:34:53,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:53,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2021-12-06 23:34:53,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2021-12-06 23:34:53,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2021-12-06 23:34:53,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2021-12-06 23:34:53,890 INFO L186 Difference]: Start difference. First operand has 79 places, 69 transitions, 183 flow. Second operand 3 states and 182 transitions. [2021-12-06 23:34:53,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 299 flow [2021-12-06 23:34:53,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 267 flow, removed 16 selfloop flow, removed 0 redundant places. [2021-12-06 23:34:53,893 INFO L242 Difference]: Finished difference. Result has 76 places, 67 transitions, 197 flow [2021-12-06 23:34:53,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2021-12-06 23:34:53,893 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2021-12-06 23:34:53,894 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 197 flow [2021-12-06 23:34:53,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2021-12-06 23:34:53,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:53,894 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:53,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:34:53,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 23:34:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1941602668, now seen corresponding path program 1 times [2021-12-06 23:34:53,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:53,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295447558] [2021-12-06 23:34:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:53,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:34:53,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295447558] [2021-12-06 23:34:53,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295447558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:53,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:53,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:53,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473798172] [2021-12-06 23:34:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:53,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:53,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:53,915 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 69 [2021-12-06 23:34:53,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-12-06 23:34:53,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:53,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 69 [2021-12-06 23:34:53,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:54,283 INFO L129 PetriNetUnfolder]: 1323/3694 cut-off events. [2021-12-06 23:34:54,284 INFO L130 PetriNetUnfolder]: For 1408/1408 co-relation queries the response was YES. [2021-12-06 23:34:54,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6706 conditions, 3694 events. 1323/3694 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33703 event pairs, 293 based on Foata normal form. 928/4487 useless extension candidates. Maximal degree in co-relation 6642. Up to 1123 conditions per place. [2021-12-06 23:34:54,322 INFO L132 encePairwiseOnDemand]: 59/69 looper letters, 25 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2021-12-06 23:34:54,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 285 flow [2021-12-06 23:34:54,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2021-12-06 23:34:54,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8357487922705314 [2021-12-06 23:34:54,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 173 transitions. [2021-12-06 23:34:54,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 173 transitions. [2021-12-06 23:34:54,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:54,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 173 transitions. [2021-12-06 23:34:54,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 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) [2021-12-06 23:34:54,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2021-12-06 23:34:54,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2021-12-06 23:34:54,325 INFO L186 Difference]: Start difference. First operand has 76 places, 67 transitions, 197 flow. Second operand 3 states and 173 transitions. [2021-12-06 23:34:54,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 285 flow [2021-12-06 23:34:54,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:34:54,328 INFO L242 Difference]: Finished difference. Result has 73 places, 67 transitions, 206 flow [2021-12-06 23:34:54,328 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2021-12-06 23:34:54,329 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2021-12-06 23:34:54,329 INFO L470 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 206 flow [2021-12-06 23:34:54,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-12-06 23:34:54,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:54,347 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:54,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:34:54,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 23:34:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -576744180, now seen corresponding path program 1 times [2021-12-06 23:34:54,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:54,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313966419] [2021-12-06 23:34:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:54,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:54,361 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:34:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:54,375 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:34:54,375 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:34:54,376 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 7 remaining) [2021-12-06 23:34:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-12-06 23:34:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-12-06 23:34:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-12-06 23:34:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-12-06 23:34:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-12-06 23:34:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-12-06 23:34:54,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:34:54,377 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:34:54,377 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:34:54,377 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-12-06 23:34:54,385 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,385 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,385 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,385 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,385 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,386 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,386 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,386 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,386 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,386 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,386 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,386 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,393 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,393 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,393 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,393 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,393 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,393 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,394 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,395 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,395 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,395 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,395 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,395 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,396 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,396 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,396 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,396 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,397 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,397 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,397 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,397 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,398 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,398 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,398 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,398 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,399 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,399 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,399 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,399 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,399 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,400 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,400 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,400 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,400 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,400 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:54,401 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:34:54,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:34:54,403 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=PETRI_NET, 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 [2021-12-06 23:34:54,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-06 23:34:54,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 77 transitions, 214 flow [2021-12-06 23:34:54,420 INFO L129 PetriNetUnfolder]: 7/153 cut-off events. [2021-12-06 23:34:54,420 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-12-06 23:34:54,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 153 events. 7/153 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 229 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2021-12-06 23:34:54,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 77 transitions, 214 flow [2021-12-06 23:34:54,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 77 transitions, 214 flow [2021-12-06 23:34:54,425 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-12-06 23:34:54,425 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:54,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:54,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:54,426 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-06 23:34:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 151278677, now seen corresponding path program 1 times [2021-12-06 23:34:54,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:54,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029650588] [2021-12-06 23:34:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:54,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:54,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029650588] [2021-12-06 23:34:54,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029650588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:54,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:54,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:54,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566285751] [2021-12-06 23:34:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:54,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:54,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:54,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:54,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 77 [2021-12-06 23:34:54,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-06 23:34:54,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:54,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 77 [2021-12-06 23:34:54,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:56,367 INFO L129 PetriNetUnfolder]: 14408/23143 cut-off events. [2021-12-06 23:34:56,368 INFO L130 PetriNetUnfolder]: For 21004/21004 co-relation queries the response was YES. [2021-12-06 23:34:56,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49387 conditions, 23143 events. 14408/23143 cut-off events. For 21004/21004 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 183564 event pairs, 9424 based on Foata normal form. 4495/21566 useless extension candidates. Maximal degree in co-relation 13922. Up to 18519 conditions per place. [2021-12-06 23:34:56,598 INFO L132 encePairwiseOnDemand]: 62/77 looper letters, 35 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2021-12-06 23:34:56,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 363 flow [2021-12-06 23:34:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2021-12-06 23:34:56,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8744588744588745 [2021-12-06 23:34:56,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2021-12-06 23:34:56,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2021-12-06 23:34:56,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:56,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2021-12-06 23:34:56,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2021-12-06 23:34:56,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2021-12-06 23:34:56,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2021-12-06 23:34:56,601 INFO L186 Difference]: Start difference. First operand has 89 places, 77 transitions, 214 flow. Second operand 3 states and 202 transitions. [2021-12-06 23:34:56,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 363 flow [2021-12-06 23:34:56,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 313 flow, removed 25 selfloop flow, removed 0 redundant places. [2021-12-06 23:34:56,606 INFO L242 Difference]: Finished difference. Result has 86 places, 76 transitions, 227 flow [2021-12-06 23:34:56,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2021-12-06 23:34:56,606 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, -3 predicate places. [2021-12-06 23:34:56,607 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 227 flow [2021-12-06 23:34:56,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-06 23:34:56,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:56,607 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:56,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:34:56,607 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-06 23:34:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1190406981, now seen corresponding path program 1 times [2021-12-06 23:34:56,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:56,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965622587] [2021-12-06 23:34:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:56,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:56,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965622587] [2021-12-06 23:34:56,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965622587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:56,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:56,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:56,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449905777] [2021-12-06 23:34:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:56,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:56,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:56,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 77 [2021-12-06 23:34:56,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-06 23:34:56,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:56,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 77 [2021-12-06 23:34:56,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:34:57,740 INFO L129 PetriNetUnfolder]: 5635/13690 cut-off events. [2021-12-06 23:34:57,740 INFO L130 PetriNetUnfolder]: For 6823/6852 co-relation queries the response was YES. [2021-12-06 23:34:57,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24317 conditions, 13690 events. 5635/13690 cut-off events. For 6823/6852 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 144189 event pairs, 2538 based on Foata normal form. 4368/17135 useless extension candidates. Maximal degree in co-relation 13752. Up to 4511 conditions per place. [2021-12-06 23:34:57,882 INFO L132 encePairwiseOnDemand]: 65/77 looper letters, 30 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2021-12-06 23:34:57,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 334 flow [2021-12-06 23:34:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:34:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:34:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2021-12-06 23:34:57,883 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8311688311688312 [2021-12-06 23:34:57,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2021-12-06 23:34:57,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2021-12-06 23:34:57,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:34:57,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2021-12-06 23:34:57,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-12-06 23:34:57,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2021-12-06 23:34:57,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2021-12-06 23:34:57,885 INFO L186 Difference]: Start difference. First operand has 86 places, 76 transitions, 227 flow. Second operand 3 states and 192 transitions. [2021-12-06 23:34:57,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 334 flow [2021-12-06 23:34:57,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:34:57,888 INFO L242 Difference]: Finished difference. Result has 82 places, 76 transitions, 238 flow [2021-12-06 23:34:57,888 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2021-12-06 23:34:57,889 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, -7 predicate places. [2021-12-06 23:34:57,889 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 238 flow [2021-12-06 23:34:57,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-06 23:34:57,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:57,889 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:57,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:34:57,889 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-06 23:34:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash 907606544, now seen corresponding path program 1 times [2021-12-06 23:34:57,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:57,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112821147] [2021-12-06 23:34:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:57,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:57,903 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:34:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:34:57,917 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:34:57,917 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:34:57,917 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (7 of 8 remaining) [2021-12-06 23:34:57,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2021-12-06 23:34:57,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2021-12-06 23:34:57,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2021-12-06 23:34:57,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2021-12-06 23:34:57,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2021-12-06 23:34:57,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2021-12-06 23:34:57,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2021-12-06 23:34:57,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:34:57,919 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:34:57,919 WARN L234 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:34:57,919 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-12-06 23:34:57,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,927 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,927 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,934 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,934 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,935 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,935 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,935 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,936 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,936 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,936 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,936 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,936 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,936 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,936 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,937 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,937 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,937 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,937 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,937 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,937 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,937 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,938 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,938 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:34:57,938 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:34:57,939 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:34:57,939 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=PETRI_NET, 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 [2021-12-06 23:34:57,939 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-12-06 23:34:57,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 85 transitions, 247 flow [2021-12-06 23:34:57,952 INFO L129 PetriNetUnfolder]: 8/174 cut-off events. [2021-12-06 23:34:57,952 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-12-06 23:34:57,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 174 events. 8/174 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 270 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 180. Up to 16 conditions per place. [2021-12-06 23:34:57,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 85 transitions, 247 flow [2021-12-06 23:34:57,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 85 transitions, 247 flow [2021-12-06 23:34:57,955 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-12-06 23:34:57,956 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:34:57,956 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:34:57,956 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:57,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-06 23:34:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 98979356, now seen corresponding path program 1 times [2021-12-06 23:34:57,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:57,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116705835] [2021-12-06 23:34:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:57,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:34:57,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116705835] [2021-12-06 23:34:57,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116705835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:57,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:34:57,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:34:57,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302668677] [2021-12-06 23:34:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:57,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:34:57,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:34:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:34:57,976 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 85 [2021-12-06 23:34:57,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-12-06 23:34:57,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:34:57,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 85 [2021-12-06 23:34:57,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:35:06,518 INFO L129 PetriNetUnfolder]: 75117/111330 cut-off events. [2021-12-06 23:35:06,518 INFO L130 PetriNetUnfolder]: For 116553/116553 co-relation queries the response was YES. [2021-12-06 23:35:07,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239848 conditions, 111330 events. 75117/111330 cut-off events. For 116553/116553 co-relation queries the response was YES. Maximal size of possible extension queue 5092. Compared 897039 event pairs, 29991 based on Foata normal form. 18820/100778 useless extension candidates. Maximal degree in co-relation 156380. Up to 93041 conditions per place. [2021-12-06 23:35:08,178 INFO L132 encePairwiseOnDemand]: 68/85 looper letters, 41 selfloop transitions, 8 changer transitions 0/98 dead transitions. [2021-12-06 23:35:08,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 431 flow [2021-12-06 23:35:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:35:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:35:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-12-06 23:35:08,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8705882352941177 [2021-12-06 23:35:08,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-12-06 23:35:08,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-12-06 23:35:08,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:35:08,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-12-06 23:35:08,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2021-12-06 23:35:08,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-12-06 23:35:08,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-12-06 23:35:08,182 INFO L186 Difference]: Start difference. First operand has 99 places, 85 transitions, 247 flow. Second operand 3 states and 222 transitions. [2021-12-06 23:35:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 431 flow [2021-12-06 23:35:08,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 359 flow, removed 36 selfloop flow, removed 0 redundant places. [2021-12-06 23:35:08,216 INFO L242 Difference]: Finished difference. Result has 96 places, 85 transitions, 257 flow [2021-12-06 23:35:08,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2021-12-06 23:35:08,217 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2021-12-06 23:35:08,217 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 257 flow [2021-12-06 23:35:08,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-12-06 23:35:08,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:35:08,218 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:35:08,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 23:35:08,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-06 23:35:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:35:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash 314136048, now seen corresponding path program 1 times [2021-12-06 23:35:08,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:35:08,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790137536] [2021-12-06 23:35:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:35:08,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:35:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:35:08,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:35:08,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790137536] [2021-12-06 23:35:08,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790137536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:35:08,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:35:08,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:35:08,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169319936] [2021-12-06 23:35:08,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:35:08,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:35:08,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:35:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:35:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:35:08,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 85 [2021-12-06 23:35:08,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-06 23:35:08,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:35:08,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 85 [2021-12-06 23:35:08,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:35:13,139 INFO L129 PetriNetUnfolder]: 24837/60570 cut-off events. [2021-12-06 23:35:13,139 INFO L130 PetriNetUnfolder]: For 32579/32579 co-relation queries the response was YES. [2021-12-06 23:35:13,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105798 conditions, 60570 events. 24837/60570 cut-off events. For 32579/32579 co-relation queries the response was YES. Maximal size of possible extension queue 3523. Compared 789849 event pairs, 7506 based on Foata normal form. 22113/79785 useless extension candidates. Maximal degree in co-relation 105732. Up to 23603 conditions per place. [2021-12-06 23:35:13,954 INFO L132 encePairwiseOnDemand]: 71/85 looper letters, 35 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2021-12-06 23:35:13,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 383 flow [2021-12-06 23:35:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:35:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:35:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2021-12-06 23:35:13,956 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8274509803921568 [2021-12-06 23:35:13,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2021-12-06 23:35:13,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2021-12-06 23:35:13,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:35:13,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2021-12-06 23:35:13,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-12-06 23:35:13,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-12-06 23:35:13,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-12-06 23:35:13,958 INFO L186 Difference]: Start difference. First operand has 96 places, 85 transitions, 257 flow. Second operand 3 states and 211 transitions. [2021-12-06 23:35:13,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 383 flow [2021-12-06 23:35:13,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:35:13,965 INFO L242 Difference]: Finished difference. Result has 91 places, 85 transitions, 270 flow [2021-12-06 23:35:13,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2021-12-06 23:35:13,965 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, -8 predicate places. [2021-12-06 23:35:13,965 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 270 flow [2021-12-06 23:35:13,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-06 23:35:13,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:35:13,966 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:35:13,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 23:35:13,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-06 23:35:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:35:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash -82625427, now seen corresponding path program 1 times [2021-12-06 23:35:13,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:35:13,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046773302] [2021-12-06 23:35:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:35:13,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:35:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:35:13,978 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:35:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:35:13,999 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:35:13,999 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:35:13,999 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 9 remaining) [2021-12-06 23:35:13,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2021-12-06 23:35:13,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2021-12-06 23:35:14,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2021-12-06 23:35:14,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2021-12-06 23:35:14,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2021-12-06 23:35:14,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2021-12-06 23:35:14,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2021-12-06 23:35:14,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2021-12-06 23:35:14,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 23:35:14,001 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:35:14,001 WARN L234 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:35:14,001 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,009 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,011 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,012 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,013 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,014 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,015 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,016 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,016 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,016 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,016 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,017 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,017 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,017 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,017 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,017 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,017 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,017 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,018 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,019 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:35:14,020 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:35:14,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:35:14,021 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=PETRI_NET, 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 [2021-12-06 23:35:14,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-12-06 23:35:14,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 93 transitions, 282 flow [2021-12-06 23:35:14,033 INFO L129 PetriNetUnfolder]: 9/195 cut-off events. [2021-12-06 23:35:14,033 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-12-06 23:35:14,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 9/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 318 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 211. Up to 18 conditions per place. [2021-12-06 23:35:14,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 93 transitions, 282 flow [2021-12-06 23:35:14,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 93 transitions, 282 flow [2021-12-06 23:35:14,035 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-12-06 23:35:14,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:35:14,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:35:14,035 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:35:14,035 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-06 23:35:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:35:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1810271875, now seen corresponding path program 1 times [2021-12-06 23:35:14,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:35:14,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623431632] [2021-12-06 23:35:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:35:14,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:35:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:35:14,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:35:14,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623431632] [2021-12-06 23:35:14,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623431632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:35:14,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:35:14,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:35:14,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146452561] [2021-12-06 23:35:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:35:14,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:35:14,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:35:14,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:35:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:35:14,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 93 [2021-12-06 23:35:14,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2021-12-06 23:35:14,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:35:14,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 93 [2021-12-06 23:35:14,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:36:01,669 INFO L129 PetriNetUnfolder]: 372987/525398 cut-off events. [2021-12-06 23:36:01,669 INFO L130 PetriNetUnfolder]: For 642256/642256 co-relation queries the response was YES. [2021-12-06 23:36:05,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1142800 conditions, 525398 events. 372987/525398 cut-off events. For 642256/642256 co-relation queries the response was YES. Maximal size of possible extension queue 22680. Compared 4615859 event pairs, 265577 based on Foata normal form. 78051/458182 useless extension candidates. Maximal degree in co-relation 298608. Up to 448990 conditions per place. [2021-12-06 23:36:10,035 INFO L132 encePairwiseOnDemand]: 74/93 looper letters, 47 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2021-12-06 23:36:10,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 503 flow [2021-12-06 23:36:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:36:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:36:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2021-12-06 23:36:10,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673835125448028 [2021-12-06 23:36:10,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2021-12-06 23:36:10,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2021-12-06 23:36:10,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:36:10,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2021-12-06 23:36:10,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2021-12-06 23:36:10,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-06 23:36:10,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-06 23:36:10,038 INFO L186 Difference]: Start difference. First operand has 109 places, 93 transitions, 282 flow. Second operand 3 states and 242 transitions. [2021-12-06 23:36:10,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 503 flow [2021-12-06 23:36:10,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 109 transitions, 405 flow, removed 49 selfloop flow, removed 0 redundant places. [2021-12-06 23:36:10,116 INFO L242 Difference]: Finished difference. Result has 106 places, 94 transitions, 287 flow [2021-12-06 23:36:10,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2021-12-06 23:36:10,116 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2021-12-06 23:36:10,117 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 287 flow [2021-12-06 23:36:10,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2021-12-06 23:36:10,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:36:10,117 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:36:10,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 23:36:10,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-06 23:36:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:36:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash 750737709, now seen corresponding path program 1 times [2021-12-06 23:36:10,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:36:10,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041166988] [2021-12-06 23:36:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:36:10,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:36:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:36:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:36:10,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:36:10,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041166988] [2021-12-06 23:36:10,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041166988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:36:10,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:36:10,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:36:10,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418560453] [2021-12-06 23:36:10,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:36:10,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:36:10,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:36:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:36:10,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:36:10,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 93 [2021-12-06 23:36:10,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2021-12-06 23:36:10,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:36:10,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 93 [2021-12-06 23:36:10,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:36:31,739 INFO L129 PetriNetUnfolder]: 104671/244892 cut-off events. [2021-12-06 23:36:31,740 INFO L130 PetriNetUnfolder]: For 152716/152716 co-relation queries the response was YES. [2021-12-06 23:36:33,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422022 conditions, 244892 events. 104671/244892 cut-off events. For 152716/152716 co-relation queries the response was YES. Maximal size of possible extension queue 13452. Compared 3649957 event pairs, 37193 based on Foata normal form. 100025/331416 useless extension candidates. Maximal degree in co-relation 421955. Up to 105459 conditions per place. [2021-12-06 23:36:35,295 INFO L132 encePairwiseOnDemand]: 77/93 looper letters, 40 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2021-12-06 23:36:35,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 432 flow [2021-12-06 23:36:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:36:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:36:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2021-12-06 23:36:35,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8243727598566308 [2021-12-06 23:36:35,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2021-12-06 23:36:35,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2021-12-06 23:36:35,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:36:35,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2021-12-06 23:36:35,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2021-12-06 23:36:35,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-06 23:36:35,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-06 23:36:35,299 INFO L186 Difference]: Start difference. First operand has 106 places, 94 transitions, 287 flow. Second operand 3 states and 230 transitions. [2021-12-06 23:36:35,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 432 flow [2021-12-06 23:36:35,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 109 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:36:35,395 INFO L242 Difference]: Finished difference. Result has 100 places, 94 transitions, 302 flow [2021-12-06 23:36:35,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2021-12-06 23:36:35,395 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, -9 predicate places. [2021-12-06 23:36:35,396 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 302 flow [2021-12-06 23:36:35,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2021-12-06 23:36:35,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:36:35,396 INFO L254 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:36:35,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 23:36:35,396 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-06 23:36:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:36:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash -908950915, now seen corresponding path program 1 times [2021-12-06 23:36:35,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:36:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051774033] [2021-12-06 23:36:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:36:35,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:36:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:36:35,411 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:36:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:36:35,426 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:36:35,426 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:36:35,426 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (9 of 10 remaining) [2021-12-06 23:36:35,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2021-12-06 23:36:35,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2021-12-06 23:36:35,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2021-12-06 23:36:35,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2021-12-06 23:36:35,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2021-12-06 23:36:35,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2021-12-06 23:36:35,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2021-12-06 23:36:35,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2021-12-06 23:36:35,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2021-12-06 23:36:35,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 23:36:35,427 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:36:35,427 WARN L234 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-06 23:36:35,427 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2021-12-06 23:36:35,436 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,436 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,437 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,438 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,439 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,440 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,441 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,445 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,446 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,449 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,449 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,450 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,450 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,451 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,451 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,452 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,452 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,452 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,452 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,452 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,453 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,453 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,454 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,454 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,454 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,454 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,454 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,454 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,455 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,455 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,455 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,455 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,456 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,456 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,456 WARN L322 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,456 WARN L322 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:36:35,456 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:36:35,458 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:36:35,458 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=PETRI_NET, 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 [2021-12-06 23:36:35,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-06 23:36:35,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 101 transitions, 319 flow [2021-12-06 23:36:35,481 INFO L129 PetriNetUnfolder]: 10/216 cut-off events. [2021-12-06 23:36:35,481 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-12-06 23:36:35,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 216 events. 10/216 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 377 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 243. Up to 20 conditions per place. [2021-12-06 23:36:35,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 101 transitions, 319 flow [2021-12-06 23:36:35,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 101 transitions, 319 flow [2021-12-06 23:36:35,484 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-12-06 23:36:35,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:36:35,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:36:35,485 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:36:35,485 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-12-06 23:36:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:36:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 990191850, now seen corresponding path program 1 times [2021-12-06 23:36:35,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:36:35,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101823486] [2021-12-06 23:36:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:36:35,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:36:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:36:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:36:35,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:36:35,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101823486] [2021-12-06 23:36:35,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101823486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:36:35,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:36:35,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:36:35,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151236908] [2021-12-06 23:36:35,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:36:35,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:36:35,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:36:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:36:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:36:35,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 101 [2021-12-06 23:36:35,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 101 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2021-12-06 23:36:35,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:36:35,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 101 [2021-12-06 23:36:35,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand