./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU --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 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:42,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:42,849 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:05:42,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:42,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:42,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:42,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:42,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:42,905 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:42,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:42,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:42,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:42,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:42,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:42,912 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:42,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:42,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:05:42,913 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:42,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:42,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:42,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:42,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:05:42,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:42,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:05:42,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:42,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:42,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:05:42,919 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:42,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:42,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:42,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:42,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:42,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:42,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:42,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:42,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:05:42,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:42,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:42,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:42,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:42,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:42,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:42,924 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_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-10-31 22:05:43,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:43,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:43,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:43,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:43,235 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:43,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i Unable to find full path for "g++" [2024-10-31 22:05:45,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:45,553 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:45,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-10-31 22:05:45,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/data/fedce7579/309e886433284590b323267a4d565747/FLAG68fbefaf1 [2024-10-31 22:05:45,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/data/fedce7579/309e886433284590b323267a4d565747 [2024-10-31 22:05:45,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:45,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:45,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:45,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:45,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:45,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:45" (1/1) ... [2024-10-31 22:05:45,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635d2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:45, skipping insertion in model container [2024-10-31 22:05:45,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:45" (1/1) ... [2024-10-31 22:05:45,680 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:46,116 WARN L251 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_c631936d-28b7-4b34-8fbc-6553f2ab40e8/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2024-10-31 22:05:46,130 WARN L251 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_c631936d-28b7-4b34-8fbc-6553f2ab40e8/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2024-10-31 22:05:46,135 WARN L251 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_c631936d-28b7-4b34-8fbc-6553f2ab40e8/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2024-10-31 22:05:46,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:46,165 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:46,221 WARN L251 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_c631936d-28b7-4b34-8fbc-6553f2ab40e8/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2024-10-31 22:05:46,223 WARN L251 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_c631936d-28b7-4b34-8fbc-6553f2ab40e8/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2024-10-31 22:05:46,225 WARN L251 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_c631936d-28b7-4b34-8fbc-6553f2ab40e8/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2024-10-31 22:05:46,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:46,278 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:46,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46 WrapperNode [2024-10-31 22:05:46,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:46,280 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:46,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:46,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:46,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,340 INFO L138 Inliner]: procedures = 168, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-10-31 22:05:46,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:46,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:46,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:46,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:46,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,376 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-10-31 22:05:46,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:46,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:46,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:46,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:46,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (1/1) ... [2024-10-31 22:05:46,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:46,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:46,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:05:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:05:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:05:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:05:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-31 22:05:46,472 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-31 22:05:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-31 22:05:46,472 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-31 22:05:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:05:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:05:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:05:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:05:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:05:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:05:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:05:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-31 22:05:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-31 22:05:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:05:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:05:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:05:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:05:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:05:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:46,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:46,477 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:05:46,643 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:46,649 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:47,030 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:05:47,031 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:47,318 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:47,319 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:05:47,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:47 BoogieIcfgContainer [2024-10-31 22:05:47,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:47,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:47,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:47,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:47,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:45" (1/3) ... [2024-10-31 22:05:47,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28542546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:47, skipping insertion in model container [2024-10-31 22:05:47,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:46" (2/3) ... [2024-10-31 22:05:47,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28542546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:47, skipping insertion in model container [2024-10-31 22:05:47,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:47" (3/3) ... [2024-10-31 22:05:47,333 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-10-31 22:05:47,354 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:47,354 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-31 22:05:47,355 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:05:47,425 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:05:47,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 46 transitions, 106 flow [2024-10-31 22:05:47,527 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2024-10-31 22:05:47,528 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:05:47,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 8/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-10-31 22:05:47,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 46 transitions, 106 flow [2024-10-31 22:05:47,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 42 transitions, 93 flow [2024-10-31 22:05:47,550 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:47,562 INFO L333 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, 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;@5ed4f42e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:47,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-31 22:05:47,586 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:05:47,586 INFO L124 PetriNetUnfolderBase]: 8/39 cut-off events. [2024-10-31 22:05:47,587 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:05:47,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:47,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:47,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:47,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash 576897654, now seen corresponding path program 1 times [2024-10-31 22:05:47,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:47,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791365414] [2024-10-31 22:05:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:48,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791365414] [2024-10-31 22:05:48,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791365414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:48,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:48,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:48,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39453424] [2024-10-31 22:05:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:48,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:48,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:48,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-31 22:05:48,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-10-31 22:05:48,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:48,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-31 22:05:48,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:48,693 INFO L124 PetriNetUnfolderBase]: 392/721 cut-off events. [2024-10-31 22:05:48,694 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-31 22:05:48,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 721 events. 392/721 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3469 event pairs, 290 based on Foata normal form. 65/712 useless extension candidates. Maximal degree in co-relation 1316. Up to 614 conditions per place. [2024-10-31 22:05:48,706 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2024-10-31 22:05:48,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 137 flow [2024-10-31 22:05:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-10-31 22:05:48,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-31 22:05:48,725 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 93 flow. Second operand 3 states and 69 transitions. [2024-10-31 22:05:48,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 137 flow [2024-10-31 22:05:48,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:48,733 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 80 flow [2024-10-31 22:05:48,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-10-31 22:05:48,741 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-10-31 22:05:48,742 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 80 flow [2024-10-31 22:05:48,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-10-31 22:05:48,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:48,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:48,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:48,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:48,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:48,744 INFO L85 PathProgramCache]: Analyzing trace with hash -220093088, now seen corresponding path program 1 times [2024-10-31 22:05:48,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:48,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096395285] [2024-10-31 22:05:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:48,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096395285] [2024-10-31 22:05:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096395285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126796755] [2024-10-31 22:05:48,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:48,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:48,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-10-31 22:05:48,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-31 22:05:48,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:48,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-10-31 22:05:48,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:49,200 INFO L124 PetriNetUnfolderBase]: 626/1167 cut-off events. [2024-10-31 22:05:49,200 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:05:49,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 1167 events. 626/1167 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5331 event pairs, 231 based on Foata normal form. 24/1092 useless extension candidates. Maximal degree in co-relation 2180. Up to 572 conditions per place. [2024-10-31 22:05:49,214 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 42 selfloop transitions, 3 changer transitions 2/57 dead transitions. [2024-10-31 22:05:49,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 217 flow [2024-10-31 22:05:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-31 22:05:49,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-10-31 22:05:49,217 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 80 flow. Second operand 3 states and 90 transitions. [2024-10-31 22:05:49,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 217 flow [2024-10-31 22:05:49,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:49,221 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 94 flow [2024-10-31 22:05:49,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-10-31 22:05:49,224 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-10-31 22:05:49,224 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 94 flow [2024-10-31 22:05:49,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-31 22:05:49,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:49,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:49,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:05:49,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:49,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash 703926712, now seen corresponding path program 1 times [2024-10-31 22:05:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:49,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129424424] [2024-10-31 22:05:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:49,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:49,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129424424] [2024-10-31 22:05:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129424424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:49,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:49,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735413470] [2024-10-31 22:05:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:49,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:49,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:49,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-31 22:05:49,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-31 22:05:49,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:49,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-31 22:05:49,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:49,696 INFO L124 PetriNetUnfolderBase]: 687/1304 cut-off events. [2024-10-31 22:05:49,697 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-10-31 22:05:49,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2521 conditions, 1304 events. 687/1304 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6243 event pairs, 211 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 2513. Up to 889 conditions per place. [2024-10-31 22:05:49,709 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-10-31 22:05:49,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 213 flow [2024-10-31 22:05:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-31 22:05:49,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-10-31 22:05:49,712 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 94 flow. Second operand 3 states and 82 transitions. [2024-10-31 22:05:49,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 213 flow [2024-10-31 22:05:49,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:49,718 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 103 flow [2024-10-31 22:05:49,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-10-31 22:05:49,721 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-10-31 22:05:49,721 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 103 flow [2024-10-31 22:05:49,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-31 22:05:49,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:49,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:49,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:05:49,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:49,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2101676173, now seen corresponding path program 1 times [2024-10-31 22:05:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:49,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91462796] [2024-10-31 22:05:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:49,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:49,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:49,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91462796] [2024-10-31 22:05:49,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91462796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:49,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:49,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:49,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897647866] [2024-10-31 22:05:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:49,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:49,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:49,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:49,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-31 22:05:49,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2024-10-31 22:05:49,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:49,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-31 22:05:49,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:50,415 INFO L124 PetriNetUnfolderBase]: 928/1728 cut-off events. [2024-10-31 22:05:50,416 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-10-31 22:05:50,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 1728 events. 928/1728 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9003 event pairs, 405 based on Foata normal form. 12/1637 useless extension candidates. Maximal degree in co-relation 3479. Up to 1133 conditions per place. [2024-10-31 22:05:50,428 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 78 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2024-10-31 22:05:50,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 94 transitions, 402 flow [2024-10-31 22:05:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:05:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-10-31 22:05:50,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-10-31 22:05:50,433 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 103 flow. Second operand 7 states and 176 transitions. [2024-10-31 22:05:50,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 94 transitions, 402 flow [2024-10-31 22:05:50,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 94 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:50,436 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 150 flow [2024-10-31 22:05:50,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-10-31 22:05:50,436 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-10-31 22:05:50,437 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 150 flow [2024-10-31 22:05:50,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2024-10-31 22:05:50,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:50,440 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:50,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:05:50,440 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:50,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash 691943577, now seen corresponding path program 1 times [2024-10-31 22:05:50,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:50,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356759345] [2024-10-31 22:05:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:50,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356759345] [2024-10-31 22:05:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356759345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:50,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394947868] [2024-10-31 22:05:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:50,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:50,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:50,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-31 22:05:50,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-31 22:05:50,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:50,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-31 22:05:50,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:50,772 INFO L124 PetriNetUnfolderBase]: 756/1460 cut-off events. [2024-10-31 22:05:50,772 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-10-31 22:05:50,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3151 conditions, 1460 events. 756/1460 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7246 event pairs, 254 based on Foata normal form. 42/1462 useless extension candidates. Maximal degree in co-relation 3137. Up to 732 conditions per place. [2024-10-31 22:05:50,784 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 43 selfloop transitions, 3 changer transitions 3/59 dead transitions. [2024-10-31 22:05:50,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 283 flow [2024-10-31 22:05:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-31 22:05:50,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-10-31 22:05:50,789 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 150 flow. Second operand 3 states and 82 transitions. [2024-10-31 22:05:50,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 283 flow [2024-10-31 22:05:50,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:50,795 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 156 flow [2024-10-31 22:05:50,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-10-31 22:05:50,796 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-10-31 22:05:50,796 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 156 flow [2024-10-31 22:05:50,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-31 22:05:50,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:50,798 INFO L204 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] [2024-10-31 22:05:50,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:05:50,799 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:50,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:50,801 INFO L85 PathProgramCache]: Analyzing trace with hash 116028908, now seen corresponding path program 1 times [2024-10-31 22:05:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:50,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111492147] [2024-10-31 22:05:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:50,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:50,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111492147] [2024-10-31 22:05:50,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111492147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:50,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:50,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313840405] [2024-10-31 22:05:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:50,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:50,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-10-31 22:05:50,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 22:05:50,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:50,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-10-31 22:05:50,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:51,129 INFO L124 PetriNetUnfolderBase]: 412/908 cut-off events. [2024-10-31 22:05:51,129 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-10-31 22:05:51,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 908 events. 412/908 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3991 event pairs, 128 based on Foata normal form. 46/932 useless extension candidates. Maximal degree in co-relation 2007. Up to 410 conditions per place. [2024-10-31 22:05:51,135 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 39 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-10-31 22:05:51,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 276 flow [2024-10-31 22:05:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-31 22:05:51,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-10-31 22:05:51,137 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 156 flow. Second operand 3 states and 81 transitions. [2024-10-31 22:05:51,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 276 flow [2024-10-31 22:05:51,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:51,141 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 158 flow [2024-10-31 22:05:51,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-10-31 22:05:51,142 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-10-31 22:05:51,143 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 158 flow [2024-10-31 22:05:51,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 22:05:51,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:51,143 INFO L204 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] [2024-10-31 22:05:51,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:05:51,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:51,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash -178224064, now seen corresponding path program 1 times [2024-10-31 22:05:51,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:51,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943471543] [2024-10-31 22:05:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:51,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:05:51,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550354816] [2024-10-31 22:05:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:51,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:51,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:51,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:51,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:51,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-31 22:05:51,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:51,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-31 22:05:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:52,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:52,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:52,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943471543] [2024-10-31 22:05:52,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-31 22:05:52,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550354816] [2024-10-31 22:05:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550354816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:52,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:52,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:05:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201464027] [2024-10-31 22:05:52,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:52,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:05:52,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:52,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:05:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:05:52,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-31 22:05:52,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:52,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:52,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-31 22:05:52,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:52,634 INFO L124 PetriNetUnfolderBase]: 476/1016 cut-off events. [2024-10-31 22:05:52,634 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-10-31 22:05:52,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1016 events. 476/1016 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4358 event pairs, 94 based on Foata normal form. 0/991 useless extension candidates. Maximal degree in co-relation 2366. Up to 422 conditions per place. [2024-10-31 22:05:52,641 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 71 selfloop transitions, 9 changer transitions 11/103 dead transitions. [2024-10-31 22:05:52,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 515 flow [2024-10-31 22:05:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:05:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:05:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-10-31 22:05:52,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-31 22:05:52,643 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 158 flow. Second operand 9 states and 207 transitions. [2024-10-31 22:05:52,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 515 flow [2024-10-31 22:05:52,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:52,648 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 209 flow [2024-10-31 22:05:52,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-10-31 22:05:52,649 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-10-31 22:05:52,649 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 209 flow [2024-10-31 22:05:52,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:52,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:52,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:52,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:52,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:05:52,854 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:52,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash -905102411, now seen corresponding path program 1 times [2024-10-31 22:05:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:52,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475733969] [2024-10-31 22:05:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:52,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475733969] [2024-10-31 22:05:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475733969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:53,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334227784] [2024-10-31 22:05:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:53,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:53,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-10-31 22:05:53,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-31 22:05:53,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:53,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-10-31 22:05:53,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:53,299 INFO L124 PetriNetUnfolderBase]: 482/1016 cut-off events. [2024-10-31 22:05:53,300 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-10-31 22:05:53,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 1016 events. 482/1016 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4341 event pairs, 369 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 2450. Up to 828 conditions per place. [2024-10-31 22:05:53,306 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 36 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-10-31 22:05:53,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 48 transitions, 279 flow [2024-10-31 22:05:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-10-31 22:05:53,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-10-31 22:05:53,308 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 209 flow. Second operand 3 states and 64 transitions. [2024-10-31 22:05:53,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 48 transitions, 279 flow [2024-10-31 22:05:53,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 269 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:53,313 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 197 flow [2024-10-31 22:05:53,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2024-10-31 22:05:53,314 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-10-31 22:05:53,314 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 197 flow [2024-10-31 22:05:53,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-31 22:05:53,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:53,315 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:53,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:05:53,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:53,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash 662089536, now seen corresponding path program 1 times [2024-10-31 22:05:53,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:53,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891344613] [2024-10-31 22:05:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:53,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:05:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:53,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891344613] [2024-10-31 22:05:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891344613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:53,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:53,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:05:53,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724732380] [2024-10-31 22:05:53,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:53,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:53,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:53,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:53,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:53,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-31 22:05:53,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2024-10-31 22:05:53,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:53,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-31 22:05:53,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:53,913 INFO L124 PetriNetUnfolderBase]: 513/1053 cut-off events. [2024-10-31 22:05:53,913 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-10-31 22:05:53,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2567 conditions, 1053 events. 513/1053 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4334 event pairs, 232 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 2547. Up to 582 conditions per place. [2024-10-31 22:05:53,919 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 54 selfloop transitions, 11 changer transitions 5/79 dead transitions. [2024-10-31 22:05:53,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 424 flow [2024-10-31 22:05:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:05:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:05:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-10-31 22:05:53,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-10-31 22:05:53,921 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 197 flow. Second operand 6 states and 137 transitions. [2024-10-31 22:05:53,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 424 flow [2024-10-31 22:05:53,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:53,926 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 221 flow [2024-10-31 22:05:53,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-10-31 22:05:53,928 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-10-31 22:05:53,928 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 221 flow [2024-10-31 22:05:53,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2024-10-31 22:05:53,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:53,930 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:53,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:05:53,932 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-31 22:05:53,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash 13379856, now seen corresponding path program 1 times [2024-10-31 22:05:53,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:53,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29522647] [2024-10-31 22:05:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:53,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:05:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50996417] [2024-10-31 22:05:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:54,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:54,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:54,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c631936d-28b7-4b34-8fbc-6553f2ab40e8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:05:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:54,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 22:05:54,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:55,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-10-31 22:05:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:55,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:08,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 466 treesize of output 446 [2024-10-31 22:06:08,387 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2024-10-31 22:06:08,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 427