./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2b.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_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/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_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/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_a311453d-01b0-493c-a924-573833ed9643/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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:08:00,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:08:00,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:08:00,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:08:00,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:08:00,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:08:00,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:08:00,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:08:00,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:08:00,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:08:00,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:08:00,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:08:00,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:08:00,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:08:00,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:08:00,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:08:00,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:08:00,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:08:00,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:08:00,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:08:00,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:08:00,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:08:00,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:08:00,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:08:00,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:08:00,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:08:00,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:08:00,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:08:00,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:08:00,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:08:00,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:08:00,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:08:00,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:08:00,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:08:00,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:08:00,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:08:00,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:08:00,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:08:00,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:08:00,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:08:00,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:08:00,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:08:00,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:08:00,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:08:00,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:08:00,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:08:00,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:08:00,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:08:00,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:08:00,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:08:00,324 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:08:00,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:08:00,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:08:00,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:08:00,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:08:00,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:08:00,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:08:00,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:08:00,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:08:00,326 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:08:00,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:08:00,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:08:00,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:08:00,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:08:00,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:08:00,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:08:00,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:08:00,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:08:00,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:08:00,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:08:00,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:08:00,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:08:00,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:08:00,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:08:00,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:08:00,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:08:00,328 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_a311453d-01b0-493c-a924-573833ed9643/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2021-12-07 01:08:00,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:08:00,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:08:00,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:08:00,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:08:00,533 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:08:00,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2021-12-07 01:08:00,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/data/3d1cabc50/356233feccfa41958eff56172d2447b3/FLAG770d014ac [2021-12-07 01:08:01,014 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:08:01,015 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2021-12-07 01:08:01,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/data/3d1cabc50/356233feccfa41958eff56172d2447b3/FLAG770d014ac [2021-12-07 01:08:01,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/data/3d1cabc50/356233feccfa41958eff56172d2447b3 [2021-12-07 01:08:01,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:08:01,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:08:01,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:08:01,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:08:01,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:08:01,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c9ad96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01, skipping insertion in model container [2021-12-07 01:08:01,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:08:01,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:08:01,301 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_a311453d-01b0-493c-a924-573833ed9643/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2021-12-07 01:08:01,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:08:01,320 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:08:01,343 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_a311453d-01b0-493c-a924-573833ed9643/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2021-12-07 01:08:01,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:08:01,376 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:08:01,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01 WrapperNode [2021-12-07 01:08:01,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:08:01,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:08:01,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:08:01,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:08:01,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,418 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2021-12-07 01:08:01,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:08:01,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:08:01,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:08:01,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:08:01,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:08:01,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:08:01,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:08:01,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:08:01,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (1/1) ... [2021-12-07 01:08:01,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:08:01,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:08:01,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:08:01,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:08:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-12-07 01:08:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-12-07 01:08:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:08:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-07 01:08:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:08:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:08:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:08:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:08:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-07 01:08:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:08:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:08:01,503 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-07 01:08:01,591 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:08:01,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:08:01,740 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:08:01,759 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:08:01,759 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 01:08:01,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:08:01 BoogieIcfgContainer [2021-12-07 01:08:01,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:08:01,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:08:01,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:08:01,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:08:01,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:08:01" (1/3) ... [2021-12-07 01:08:01,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7fb3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:08:01, skipping insertion in model container [2021-12-07 01:08:01,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:01" (2/3) ... [2021-12-07 01:08:01,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7fb3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:08:01, skipping insertion in model container [2021-12-07 01:08:01,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:08:01" (3/3) ... [2021-12-07 01:08:01,767 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2021-12-07 01:08:01,770 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-07 01:08:01,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:08:01,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:08:01,770 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-07 01:08:01,791 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,791 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,791 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,791 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,792 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,792 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,792 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,792 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,792 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,792 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,793 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,793 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,793 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,793 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,793 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,793 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,794 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,794 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,794 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,794 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,794 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,794 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,794 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,795 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,796 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,796 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,796 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,796 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,796 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,796 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,796 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,797 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,797 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,797 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,797 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,797 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,797 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,797 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~lse~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~lse~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~lse~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~lse~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,798 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,799 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,799 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,799 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,799 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,799 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,799 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,800 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,800 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,800 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,800 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,800 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,802 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,803 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,803 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~lse~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,803 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,803 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,803 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,803 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,803 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,804 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,804 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,804 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,804 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:08:01,805 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-07 01:08:01,839 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:08:01,844 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 [2021-12-07 01:08:01,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 01:08:01,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 245 flow [2021-12-07 01:08:01,911 INFO L129 PetriNetUnfolder]: 6/119 cut-off events. [2021-12-07 01:08:01,911 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 01:08:01,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 119 events. 6/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2021-12-07 01:08:01,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 245 flow [2021-12-07 01:08:01,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 241 flow [2021-12-07 01:08:01,944 INFO L129 PetriNetUnfolder]: 4/94 cut-off events. [2021-12-07 01:08:01,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 01:08:01,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:08:01,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:08:01,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-07 01:08:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:08:01,951 INFO L85 PathProgramCache]: Analyzing trace with hash 182298429, now seen corresponding path program 1 times [2021-12-07 01:08:01,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:08:01,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475292534] [2021-12-07 01:08:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:01,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:08:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:08:02,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:08:02,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475292534] [2021-12-07 01:08:02,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475292534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:08:02,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:08:02,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:08:02,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060462685] [2021-12-07 01:08:02,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:08:02,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:08:02,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:08:02,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:08:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:08:02,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 120 [2021-12-07 01:08:02,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:08:02,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 120 [2021-12-07 01:08:02,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:08:02,318 INFO L129 PetriNetUnfolder]: 24/369 cut-off events. [2021-12-07 01:08:02,318 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-07 01:08:02,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 369 events. 24/369 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1613 event pairs, 3 based on Foata normal form. 11/354 useless extension candidates. Maximal degree in co-relation 375. Up to 16 conditions per place. [2021-12-07 01:08:02,323 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 13 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2021-12-07 01:08:02,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 287 flow [2021-12-07 01:08:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:08:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:08:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2021-12-07 01:08:02,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-12-07 01:08:02,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2021-12-07 01:08:02,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2021-12-07 01:08:02,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:08:02,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2021-12-07 01:08:02,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,350 INFO L186 Difference]: Start difference. First operand has 117 places, 119 transitions, 241 flow. Second operand 5 states and 560 transitions. [2021-12-07 01:08:02,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 287 flow [2021-12-07 01:08:02,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 124 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 01:08:02,357 INFO L242 Difference]: Finished difference. Result has 123 places, 119 transitions, 268 flow [2021-12-07 01:08:02,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2021-12-07 01:08:02,362 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2021-12-07 01:08:02,362 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 268 flow [2021-12-07 01:08:02,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,363 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:08:02,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:08:02,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:08:02,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-07 01:08:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:08:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash 694172434, now seen corresponding path program 1 times [2021-12-07 01:08:02,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:08:02,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709355740] [2021-12-07 01:08:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:02,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:08:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:08:02,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:08:02,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709355740] [2021-12-07 01:08:02,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709355740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:08:02,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:08:02,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:08:02,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695945552] [2021-12-07 01:08:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:08:02,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:08:02,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:08:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:08:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:08:02,461 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 120 [2021-12-07 01:08:02,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:08:02,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 120 [2021-12-07 01:08:02,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:08:02,591 INFO L129 PetriNetUnfolder]: 53/616 cut-off events. [2021-12-07 01:08:02,591 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-07 01:08:02,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 616 events. 53/616 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3635 event pairs, 4 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 717. Up to 24 conditions per place. [2021-12-07 01:08:02,595 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 21 selfloop transitions, 10 changer transitions 2/139 dead transitions. [2021-12-07 01:08:02,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 139 transitions, 374 flow [2021-12-07 01:08:02,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:08:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-07 01:08:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1075 transitions. [2021-12-07 01:08:02,600 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2021-12-07 01:08:02,600 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1075 transitions. [2021-12-07 01:08:02,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1075 transitions. [2021-12-07 01:08:02,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:08:02,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1075 transitions. [2021-12-07 01:08:02,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.5) internal successors, (1075), 10 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,608 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,608 INFO L186 Difference]: Start difference. First operand has 123 places, 119 transitions, 268 flow. Second operand 10 states and 1075 transitions. [2021-12-07 01:08:02,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 139 transitions, 374 flow [2021-12-07 01:08:02,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 139 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-07 01:08:02,612 INFO L242 Difference]: Finished difference. Result has 136 places, 127 transitions, 325 flow [2021-12-07 01:08:02,612 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=325, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2021-12-07 01:08:02,613 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2021-12-07 01:08:02,613 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 325 flow [2021-12-07 01:08:02,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:08:02,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:08:02,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:08:02,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-07 01:08:02,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:08:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash 791898828, now seen corresponding path program 1 times [2021-12-07 01:08:02,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:08:02,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207464297] [2021-12-07 01:08:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:02,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:08:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:08:02,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:08:02,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207464297] [2021-12-07 01:08:02,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207464297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:08:02,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:08:02,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:08:02,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611034951] [2021-12-07 01:08:02,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:08:02,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:08:02,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:08:02,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:08:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:08:02,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 120 [2021-12-07 01:08:02,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:08:02,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 120 [2021-12-07 01:08:02,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:08:02,871 INFO L129 PetriNetUnfolder]: 148/1279 cut-off events. [2021-12-07 01:08:02,871 INFO L130 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2021-12-07 01:08:02,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1279 events. 148/1279 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10595 event pairs, 30 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 1606. Up to 141 conditions per place. [2021-12-07 01:08:02,875 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 8 selfloop transitions, 2 changer transitions 61/148 dead transitions. [2021-12-07 01:08:02,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 148 transitions, 435 flow [2021-12-07 01:08:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:08:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-07 01:08:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1076 transitions. [2021-12-07 01:08:02,879 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8966666666666666 [2021-12-07 01:08:02,879 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1076 transitions. [2021-12-07 01:08:02,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1076 transitions. [2021-12-07 01:08:02,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:08:02,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1076 transitions. [2021-12-07 01:08:02,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.6) internal successors, (1076), 10 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,886 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,886 INFO L186 Difference]: Start difference. First operand has 136 places, 127 transitions, 325 flow. Second operand 10 states and 1076 transitions. [2021-12-07 01:08:02,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 148 transitions, 435 flow [2021-12-07 01:08:02,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 148 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-07 01:08:02,890 INFO L242 Difference]: Finished difference. Result has 151 places, 87 transitions, 242 flow [2021-12-07 01:08:02,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=151, PETRI_TRANSITIONS=87} [2021-12-07 01:08:02,891 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 34 predicate places. [2021-12-07 01:08:02,891 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 87 transitions, 242 flow [2021-12-07 01:08:02,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:08:02,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:08:02,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:08:02,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-07 01:08:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:08:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2023260719, now seen corresponding path program 1 times [2021-12-07 01:08:02,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:08:02,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420302143] [2021-12-07 01:08:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:02,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:08:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:08:02,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:08:02,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420302143] [2021-12-07 01:08:02,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420302143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:08:02,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:08:02,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:08:02,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574903504] [2021-12-07 01:08:02,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:08:02,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:08:02,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:08:02,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:08:02,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:08:02,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 120 [2021-12-07 01:08:02,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 87 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:02,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:08:02,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 120 [2021-12-07 01:08:02,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:08:03,001 INFO L129 PetriNetUnfolder]: 21/172 cut-off events. [2021-12-07 01:08:03,001 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-12-07 01:08:03,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 172 events. 21/172 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 597 event pairs, 9 based on Foata normal form. 2/170 useless extension candidates. Maximal degree in co-relation 277. Up to 44 conditions per place. [2021-12-07 01:08:03,002 INFO L132 encePairwiseOnDemand]: 115/120 looper letters, 11 selfloop transitions, 0 changer transitions 9/95 dead transitions. [2021-12-07 01:08:03,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 95 transitions, 298 flow [2021-12-07 01:08:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:08:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 01:08:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2021-12-07 01:08:03,005 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8875 [2021-12-07 01:08:03,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2021-12-07 01:08:03,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2021-12-07 01:08:03,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:08:03,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2021-12-07 01:08:03,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,010 INFO L186 Difference]: Start difference. First operand has 151 places, 87 transitions, 242 flow. Second operand 6 states and 639 transitions. [2021-12-07 01:08:03,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 95 transitions, 298 flow [2021-12-07 01:08:03,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 95 transitions, 264 flow, removed 11 selfloop flow, removed 14 redundant places. [2021-12-07 01:08:03,013 INFO L242 Difference]: Finished difference. Result has 104 places, 86 transitions, 214 flow [2021-12-07 01:08:03,014 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2021-12-07 01:08:03,015 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, -13 predicate places. [2021-12-07 01:08:03,015 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 214 flow [2021-12-07 01:08:03,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,015 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:08:03,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:08:03,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:08:03,016 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-07 01:08:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:08:03,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1958656625, now seen corresponding path program 1 times [2021-12-07 01:08:03,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:08:03,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852751815] [2021-12-07 01:08:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:03,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:08:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:08:03,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:08:03,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852751815] [2021-12-07 01:08:03,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852751815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:08:03,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:08:03,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 01:08:03,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249680676] [2021-12-07 01:08:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:08:03,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:08:03,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:08:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:08:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:08:03,096 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2021-12-07 01:08:03,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:08:03,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2021-12-07 01:08:03,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:08:03,239 INFO L129 PetriNetUnfolder]: 30/215 cut-off events. [2021-12-07 01:08:03,240 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2021-12-07 01:08:03,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 215 events. 30/215 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 709 event pairs, 1 based on Foata normal form. 8/221 useless extension candidates. Maximal degree in co-relation 359. Up to 12 conditions per place. [2021-12-07 01:08:03,241 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 16 selfloop transitions, 5 changer transitions 23/110 dead transitions. [2021-12-07 01:08:03,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 380 flow [2021-12-07 01:08:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:08:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-07 01:08:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1212 transitions. [2021-12-07 01:08:03,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8416666666666667 [2021-12-07 01:08:03,244 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1212 transitions. [2021-12-07 01:08:03,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1212 transitions. [2021-12-07 01:08:03,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:08:03,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1212 transitions. [2021-12-07 01:08:03,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 120.0) internal successors, (1560), 13 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,251 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 120.0) internal successors, (1560), 13 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,252 INFO L186 Difference]: Start difference. First operand has 104 places, 86 transitions, 214 flow. Second operand 12 states and 1212 transitions. [2021-12-07 01:08:03,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 380 flow [2021-12-07 01:08:03,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 370 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-12-07 01:08:03,254 INFO L242 Difference]: Finished difference. Result has 106 places, 82 transitions, 193 flow [2021-12-07 01:08:03,255 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=193, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2021-12-07 01:08:03,255 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, -11 predicate places. [2021-12-07 01:08:03,255 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 193 flow [2021-12-07 01:08:03,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:03,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:08:03,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:08:03,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:08:03,256 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-07 01:08:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:08:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1207648661, now seen corresponding path program 2 times [2021-12-07 01:08:03,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:08:03,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640648793] [2021-12-07 01:08:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:03,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:08:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:08:03,270 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:08:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:08:03,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:08:03,301 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 01:08:03,302 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-07 01:08:03,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-12-07 01:08:03,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:08:03,306 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-12-07 01:08:03,310 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-07 01:08:03,310 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:08:03,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:08:03 BasicIcfg [2021-12-07 01:08:03,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:08:03,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:08:03,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:08:03,355 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:08:03,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:08:01" (3/4) ... [2021-12-07 01:08:03,356 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 01:08:03,406 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:08:03,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:08:03,407 INFO L158 Benchmark]: Toolchain (without parser) took 2368.22ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.2MB in the beginning and 64.4MB in the end (delta: 24.7MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2021-12-07 01:08:03,407 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:08:03,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.12ms. Allocated memory is still 127.9MB. Free memory was 88.9MB in the beginning and 69.8MB in the end (delta: 19.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-07 01:08:03,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.86ms. Allocated memory is still 127.9MB. Free memory was 69.8MB in the beginning and 67.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:08:03,408 INFO L158 Benchmark]: Boogie Preprocessor took 19.56ms. Allocated memory is still 127.9MB. Free memory was 67.5MB in the beginning and 66.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:08:03,408 INFO L158 Benchmark]: RCFGBuilder took 321.52ms. Allocated memory is still 127.9MB. Free memory was 66.2MB in the beginning and 100.3MB in the end (delta: -34.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-07 01:08:03,409 INFO L158 Benchmark]: TraceAbstraction took 1592.14ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 99.7MB in the beginning and 73.9MB in the end (delta: 25.8MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2021-12-07 01:08:03,409 INFO L158 Benchmark]: Witness Printer took 51.93ms. Allocated memory is still 155.2MB. Free memory was 73.9MB in the beginning and 64.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 01:08:03,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.12ms. Allocated memory is still 127.9MB. Free memory was 88.9MB in the beginning and 69.8MB in the end (delta: 19.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.86ms. Allocated memory is still 127.9MB. Free memory was 69.8MB in the beginning and 67.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.56ms. Allocated memory is still 127.9MB. Free memory was 67.5MB in the beginning and 66.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.52ms. Allocated memory is still 127.9MB. Free memory was 66.2MB in the beginning and 100.3MB in the end (delta: -34.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1592.14ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 99.7MB in the beginning and 73.9MB in the end (delta: 25.8MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * Witness Printer took 51.93ms. Allocated memory is still 155.2MB. Free memory was 73.9MB in the beginning and 64.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L698] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L699] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L756] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L757] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L758] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L759] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L760] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; VAL [\result=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() VAL [dec()=0, pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) VAL [\old(cond)=1, cond=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 VAL [lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L715] 0 return 0; VAL [\result=0, lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() VAL [arg={0:0}, arg={0:0}, BCSP_IoIncrement()=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 179 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 247 IncrementalHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 53 mSDtfsCounter, 247 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=2, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-07 01:08:03,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a311453d-01b0-493c-a924-573833ed9643/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE