./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:27:53,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:27:53,266 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:27:53,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:27:53,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:27:53,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:27:53,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:27:53,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:27:53,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:27:53,322 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:27:53,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:27:53,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:27:53,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:27:53,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:27:53,327 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:27:53,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:27:53,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:27:53,328 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:27:53,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:27:53,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:27:53,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:27:53,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:27:53,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:27:53,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:27:53,332 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:27:53,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:27:53,332 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:27:53,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:27:53,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:27:53,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:27:53,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:27:53,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:27:53,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:27:53,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:27:53,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:27:53,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:27:53,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:27:53,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:27:53,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:27:53,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:27:53,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:27:53,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:27:53,338 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2023-11-23 22:27:53,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:27:53,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:27:53,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:27:53,642 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:27:53,642 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:27:53,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-23 22:27:56,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:27:57,009 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:27:57,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-23 22:27:57,021 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/data/e1028c476/a5f7acd390354bc994ea801e854c3e28/FLAG222775bd3 [2023-11-23 22:27:57,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/data/e1028c476/a5f7acd390354bc994ea801e854c3e28 [2023-11-23 22:27:57,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:27:57,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:27:57,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:27:57,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:27:57,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:27:57,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f10645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57, skipping insertion in model container [2023-11-23 22:27:57,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:27:57,332 WARN L240 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_ce23158d-b5b6-4b47-83f2-023741ed9b5e/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4800,4813] [2023-11-23 22:27:57,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:27:57,350 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:27:57,382 WARN L240 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_ce23158d-b5b6-4b47-83f2-023741ed9b5e/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4800,4813] [2023-11-23 22:27:57,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:27:57,393 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:27:57,393 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:27:57,401 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:27:57,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57 WrapperNode [2023-11-23 22:27:57,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:27:57,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:27:57,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:27:57,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:27:57,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,456 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 270 [2023-11-23 22:27:57,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:27:57,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:27:57,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:27:57,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:27:57,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,476 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,492 INFO L189 HeapSplitter]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2] [2023-11-23 22:27:57,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:27:57,552 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:27:57,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:27:57,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:27:57,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (1/1) ... [2023-11-23 22:27:57,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:27:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:57,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:27:57,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23158d-b5b6-4b47-83f2-023741ed9b5e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:27:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:27:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:27:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:27:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:27:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:27:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:27:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:27:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 22:27:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:27:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 22:27:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:27:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:27:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:27:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:27:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 22:27:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 22:27:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-23 22:27:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-23 22:27:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:27:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-23 22:27:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-23 22:27:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-23 22:27:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-23 22:27:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:27:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:27:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:27:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:27:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:27:57,648 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:27:57,827 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:27:57,830 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:27:58,254 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:27:58,600 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:27:58,601 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:27:58,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:27:58 BoogieIcfgContainer [2023-11-23 22:27:58,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:27:58,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:27:58,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:27:58,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:27:58,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:27:57" (1/3) ... [2023-11-23 22:27:58,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fd5ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:27:58, skipping insertion in model container [2023-11-23 22:27:58,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:57" (2/3) ... [2023-11-23 22:27:58,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fd5ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:27:58, skipping insertion in model container [2023-11-23 22:27:58,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:27:58" (3/3) ... [2023-11-23 22:27:58,614 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-11-23 22:27:58,624 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:27:58,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:27:58,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:27:58,635 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:27:58,801 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-23 22:27:58,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 79 transitions, 224 flow [2023-11-23 22:27:58,930 INFO L124 PetriNetUnfolderBase]: 4/65 cut-off events. [2023-11-23 22:27:58,930 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-23 22:27:58,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 65 events. 4/65 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2023-11-23 22:27:58,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 79 transitions, 224 flow [2023-11-23 22:27:58,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 64 transitions, 176 flow [2023-11-23 22:27:58,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:27:58,975 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@195d4282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:27:58,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-23 22:27:59,017 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:27:59,018 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-11-23 22:27:59,019 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-23 22:27:59,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:59,020 INFO L208 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] [2023-11-23 22:27:59,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-23 22:27:59,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash 240787083, now seen corresponding path program 1 times [2023-11-23 22:27:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534074142] [2023-11-23 22:27:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:59,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:59,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534074142] [2023-11-23 22:27:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534074142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:59,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:59,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:27:59,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570331772] [2023-11-23 22:27:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:59,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:27:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:27:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:27:59,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2023-11-23 22:27:59,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:27:59,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:59,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2023-11-23 22:27:59,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:02,052 INFO L124 PetriNetUnfolderBase]: 8227/12717 cut-off events. [2023-11-23 22:28:02,053 INFO L125 PetriNetUnfolderBase]: For 1709/1709 co-relation queries the response was YES. [2023-11-23 22:28:02,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26300 conditions, 12717 events. 8227/12717 cut-off events. For 1709/1709 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 88392 event pairs, 5835 based on Foata normal form. 70/11383 useless extension candidates. Maximal degree in co-relation 25768. Up to 9819 conditions per place. [2023-11-23 22:28:02,218 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 59 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-11-23 22:28:02,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 364 flow [2023-11-23 22:28:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-23 22:28:02,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104417670682731 [2023-11-23 22:28:02,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-23 22:28:02,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-23 22:28:02,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:02,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-23 22:28:02,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:02,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:02,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:02,255 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 176 flow. Second operand 3 states and 152 transitions. [2023-11-23 22:28:02,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 364 flow [2023-11-23 22:28:02,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 316 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-23 22:28:02,296 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 152 flow [2023-11-23 22:28:02,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-11-23 22:28:02,303 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2023-11-23 22:28:02,303 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 152 flow [2023-11-23 22:28:02,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:02,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:02,304 INFO L208 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] [2023-11-23 22:28:02,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:28:02,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-23 22:28:02,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1691575991, now seen corresponding path program 2 times [2023-11-23 22:28:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366809003] [2023-11-23 22:28:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:02,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:02,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366809003] [2023-11-23 22:28:02,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366809003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:02,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:02,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:28:02,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977170714] [2023-11-23 22:28:02,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:02,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:02,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:02,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:28:02,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2023-11-23 22:28:02,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:02,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:02,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2023-11-23 22:28:02,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:04,107 INFO L124 PetriNetUnfolderBase]: 6859/10105 cut-off events. [2023-11-23 22:28:04,107 INFO L125 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2023-11-23 22:28:04,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20322 conditions, 10105 events. 6859/10105 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 60799 event pairs, 4335 based on Foata normal form. 146/9421 useless extension candidates. Maximal degree in co-relation 8992. Up to 8031 conditions per place. [2023-11-23 22:28:04,207 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-23 22:28:04,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 320 flow [2023-11-23 22:28:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-23 22:28:04,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2023-11-23 22:28:04,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-23 22:28:04,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-23 22:28:04,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:04,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-23 22:28:04,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:04,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:04,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:04,219 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 152 flow. Second operand 3 states and 150 transitions. [2023-11-23 22:28:04,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 320 flow [2023-11-23 22:28:04,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:28:04,224 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 156 flow [2023-11-23 22:28:04,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2023-11-23 22:28:04,226 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -8 predicate places. [2023-11-23 22:28:04,227 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 156 flow [2023-11-23 22:28:04,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:04,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:04,228 INFO L208 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] [2023-11-23 22:28:04,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:28:04,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-23 22:28:04,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:04,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1833911318, now seen corresponding path program 1 times [2023-11-23 22:28:04,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:04,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858202542] [2023-11-23 22:28:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:04,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858202542] [2023-11-23 22:28:05,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858202542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:05,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:05,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-23 22:28:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520262002] [2023-11-23 22:28:05,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:05,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 22:28:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 22:28:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2023-11-23 22:28:05,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2023-11-23 22:28:05,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 156 flow. Second operand has 20 states, 20 states have (on average 17.55) internal successors, (351), 20 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:05,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:05,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2023-11-23 22:28:05,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:20,432 INFO L124 PetriNetUnfolderBase]: 102639/133020 cut-off events. [2023-11-23 22:28:20,432 INFO L125 PetriNetUnfolderBase]: For 7855/7855 co-relation queries the response was YES. [2023-11-23 22:28:20,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273449 conditions, 133020 events. 102639/133020 cut-off events. For 7855/7855 co-relation queries the response was YES. Maximal size of possible extension queue 2197. Compared 739198 event pairs, 36062 based on Foata normal form. 1/129451 useless extension candidates. Maximal degree in co-relation 121297. Up to 109795 conditions per place. [2023-11-23 22:28:21,342 INFO L140 encePairwiseOnDemand]: 63/83 looper letters, 279 selfloop transitions, 81 changer transitions 39/408 dead transitions. [2023-11-23 22:28:21,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 408 transitions, 1742 flow [2023-11-23 22:28:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 22:28:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-23 22:28:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 820 transitions. [2023-11-23 22:28:21,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528399311531842 [2023-11-23 22:28:21,350 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 820 transitions. [2023-11-23 22:28:21,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 820 transitions. [2023-11-23 22:28:21,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:21,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 820 transitions. [2023-11-23 22:28:21,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 29.285714285714285) internal successors, (820), 28 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 83.0) internal successors, (2407), 29 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,369 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 83.0) internal successors, (2407), 29 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,369 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 156 flow. Second operand 28 states and 820 transitions. [2023-11-23 22:28:21,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 408 transitions, 1742 flow [2023-11-23 22:28:21,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 408 transitions, 1714 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:28:21,439 INFO L231 Difference]: Finished difference. Result has 111 places, 144 transitions, 594 flow [2023-11-23 22:28:21,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=594, PETRI_PLACES=111, PETRI_TRANSITIONS=144} [2023-11-23 22:28:21,441 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2023-11-23 22:28:21,442 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 144 transitions, 594 flow [2023-11-23 22:28:21,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.55) internal successors, (351), 20 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:21,443 INFO L208 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] [2023-11-23 22:28:21,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:28:21,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-23 22:28:21,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:21,445 INFO L85 PathProgramCache]: Analyzing trace with hash 283677240, now seen corresponding path program 2 times [2023-11-23 22:28:21,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:21,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100074220] [2023-11-23 22:28:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:21,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:21,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100074220] [2023-11-23 22:28:21,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100074220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:21,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:21,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:28:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104170745] [2023-11-23 22:28:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:21,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:28:21,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2023-11-23 22:28:21,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 144 transitions, 594 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:21,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2023-11-23 22:28:21,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:26,152 INFO L124 PetriNetUnfolderBase]: 26020/38886 cut-off events. [2023-11-23 22:28:26,152 INFO L125 PetriNetUnfolderBase]: For 13336/13462 co-relation queries the response was YES. [2023-11-23 22:28:26,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85540 conditions, 38886 events. 26020/38886 cut-off events. For 13336/13462 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 278279 event pairs, 16559 based on Foata normal form. 572/34030 useless extension candidates. Maximal degree in co-relation 85516. Up to 26149 conditions per place. [2023-11-23 22:28:26,635 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 58 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2023-11-23 22:28:26,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 762 flow [2023-11-23 22:28:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-23 22:28:26,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2023-11-23 22:28:26,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-23 22:28:26,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-23 22:28:26,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:26,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-23 22:28:26,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,640 INFO L175 Difference]: Start difference. First operand has 111 places, 144 transitions, 594 flow. Second operand 3 states and 150 transitions. [2023-11-23 22:28:26,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 762 flow [2023-11-23 22:28:26,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 162 transitions, 760 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-23 22:28:26,748 INFO L231 Difference]: Finished difference. Result has 111 places, 143 transitions, 599 flow [2023-11-23 22:28:26,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=111, PETRI_TRANSITIONS=143} [2023-11-23 22:28:26,750 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2023-11-23 22:28:26,750 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 143 transitions, 599 flow [2023-11-23 22:28:26,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:26,753 INFO L208 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] [2023-11-23 22:28:26,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:28:26,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-23 22:28:26,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash -684797070, now seen corresponding path program 3 times [2023-11-23 22:28:26,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:26,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158653295] [2023-11-23 22:28:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:26,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:28,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:28,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158653295] [2023-11-23 22:28:28,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158653295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:28,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:28,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-23 22:28:28,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008121944] [2023-11-23 22:28:28,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:28,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 22:28:28,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:28,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 22:28:28,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2023-11-23 22:28:28,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2023-11-23 22:28:28,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 143 transitions, 599 flow. Second operand has 20 states, 20 states have (on average 17.55) internal successors, (351), 20 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:28,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:28,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2023-11-23 22:28:28,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:43,505 INFO L124 PetriNetUnfolderBase]: 93061/121383 cut-off events. [2023-11-23 22:28:43,505 INFO L125 PetriNetUnfolderBase]: For 112872/112872 co-relation queries the response was YES. [2023-11-23 22:28:44,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328815 conditions, 121383 events. 93061/121383 cut-off events. For 112872/112872 co-relation queries the response was YES. Maximal size of possible extension queue 1865. Compared 667918 event pairs, 33327 based on Foata normal form. 1/118222 useless extension candidates. Maximal degree in co-relation 226975. Up to 100355 conditions per place.