./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/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_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/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_d40538b6-9004-439c-9be5-a7b92ef2eeaa/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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:48,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:48,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:13:48,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:48,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:48,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:48,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:48,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:48,153 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:48,154 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:48,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:48,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:48,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:48,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:48,156 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:48,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:48,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:48,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:13:48,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:13:48,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:13:48,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:48,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:48,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:48,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:48,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:48,163 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:13:48,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:48,163 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:48,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:48,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:48,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:48,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:48,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:48,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:48,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:48,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:48,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:13:48,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:13:48,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:48,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:48,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:48,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:48,175 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_d40538b6-9004-439c-9be5-a7b92ef2eeaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-10-31 22:13:48,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:48,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:48,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:48,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:48,474 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:48,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i Unable to find full path for "g++" [2024-10-31 22:13:50,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:51,084 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:51,084 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-31 22:13:51,108 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/data/fa492f578/e5357231b1b4440691d111b62c87b283/FLAG9b8e550f3 [2024-10-31 22:13:51,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/data/fa492f578/e5357231b1b4440691d111b62c87b283 [2024-10-31 22:13:51,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:51,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:51,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:51,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:51,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:51,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:51" (1/1) ... [2024-10-31 22:13:51,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6aebac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:51, skipping insertion in model container [2024-10-31 22:13:51,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:51" (1/1) ... [2024-10-31 22:13:51,210 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:51,453 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_d40538b6-9004-439c-9be5-a7b92ef2eeaa/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-10-31 22:13:52,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:52,081 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:52,096 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_d40538b6-9004-439c-9be5-a7b92ef2eeaa/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-10-31 22:13:52,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:52,246 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:52,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52 WrapperNode [2024-10-31 22:13:52,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:52,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:52,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:52,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:52,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,304 INFO L138 Inliner]: procedures = 364, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-10-31 22:13:52,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:52,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:52,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:52,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:52,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,333 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-31 22:13:52,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:52,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:52,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:52,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:52,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (1/1) ... [2024-10-31 22:13:52,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:52,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:52,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:52,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:13:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:13:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-10-31 22:13:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-10-31 22:13:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:13:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:13:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:52,437 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 22:13:52,609 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:52,612 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:52,786 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:13:52,786 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:52,971 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:52,971 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:13:52,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:52 BoogieIcfgContainer [2024-10-31 22:13:52,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:52,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:52,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:52,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:52,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:51" (1/3) ... [2024-10-31 22:13:52,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11630ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:52, skipping insertion in model container [2024-10-31 22:13:52,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:52" (2/3) ... [2024-10-31 22:13:52,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11630ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:52, skipping insertion in model container [2024-10-31 22:13:52,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:52" (3/3) ... [2024-10-31 22:13:52,982 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-10-31 22:13:52,999 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:53,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:13:53,000 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:13:53,046 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:13:53,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 24 transitions, 55 flow [2024-10-31 22:13:53,129 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-10-31 22:13:53,130 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:13:53,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 23 events. 3/23 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-10-31 22:13:53,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 24 transitions, 55 flow [2024-10-31 22:13:53,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 20 transitions, 46 flow [2024-10-31 22:13:53,148 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:53,156 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;@6f683449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:53,156 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:13:53,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:13:53,170 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-10-31 22:13:53,171 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:13:53,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:53,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:53,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:53,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash 314256426, now seen corresponding path program 1 times [2024-10-31 22:13:53,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:53,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880440711] [2024-10-31 22:13:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:53,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:53,514 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 22:13:53,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:53,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880440711] [2024-10-31 22:13:53,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880440711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:53,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:13:53,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533789611] [2024-10-31 22:13:53,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:53,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:13:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:13:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:13:53,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-31 22:13:53,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 22:13:53,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:53,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-31 22:13:53,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:53,687 INFO L124 PetriNetUnfolderBase]: 61/134 cut-off events. [2024-10-31 22:13:53,687 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:13:53,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 134 events. 61/134 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 409 event pairs, 27 based on Foata normal form. 6/139 useless extension candidates. Maximal degree in co-relation 248. Up to 77 conditions per place. [2024-10-31 22:13:53,692 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 24 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-10-31 22:13:53,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 118 flow [2024-10-31 22:13:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:13:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:13:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-31 22:13:53,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-31 22:13:53,708 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 3 states and 45 transitions. [2024-10-31 22:13:53,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 118 flow [2024-10-31 22:13:53,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:13:53,715 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 54 flow [2024-10-31 22:13:53,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2024-10-31 22:13:53,722 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-10-31 22:13:53,723 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 54 flow [2024-10-31 22:13:53,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 22:13:53,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:53,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:53,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:13:53,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:53,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1946104689, now seen corresponding path program 1 times [2024-10-31 22:13:53,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:53,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157691798] [2024-10-31 22:13:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:53,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:53,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157691798] [2024-10-31 22:13:53,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157691798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:53,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:53,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:13:53,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135685253] [2024-10-31 22:13:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:53,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:13:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:13:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:13:53,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-31 22:13:53,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 22:13:53,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:53,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-31 22:13:53,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:54,019 INFO L124 PetriNetUnfolderBase]: 101/220 cut-off events. [2024-10-31 22:13:54,020 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-10-31 22:13:54,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 220 events. 101/220 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 762 event pairs, 53 based on Foata normal form. 10/230 useless extension candidates. Maximal degree in co-relation 144. Up to 125 conditions per place. [2024-10-31 22:13:54,023 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 26 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-10-31 22:13:54,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 32 transitions, 142 flow [2024-10-31 22:13:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:13:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:13:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-31 22:13:54,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-31 22:13:54,030 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 54 flow. Second operand 3 states and 45 transitions. [2024-10-31 22:13:54,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 32 transitions, 142 flow [2024-10-31 22:13:54,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:54,032 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 64 flow [2024-10-31 22:13:54,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2024-10-31 22:13:54,037 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2024-10-31 22:13:54,037 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 64 flow [2024-10-31 22:13:54,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 22:13:54,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:54,038 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] [2024-10-31 22:13:54,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:13:54,038 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:54,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2079151760, now seen corresponding path program 1 times [2024-10-31 22:13:54,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:54,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444037955] [2024-10-31 22:13:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:54,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:54,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444037955] [2024-10-31 22:13:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444037955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:54,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:13:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725913847] [2024-10-31 22:13:54,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:54,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:13:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:13:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:13:54,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-31 22:13:54,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 22:13:54,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:54,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-31 22:13:54,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:54,426 INFO L124 PetriNetUnfolderBase]: 69/170 cut-off events. [2024-10-31 22:13:54,427 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-31 22:13:54,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 170 events. 69/170 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 532 event pairs, 25 based on Foata normal form. 16/185 useless extension candidates. Maximal degree in co-relation 132. Up to 80 conditions per place. [2024-10-31 22:13:54,429 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 22 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-10-31 22:13:54,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 150 flow [2024-10-31 22:13:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:13:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:13:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-31 22:13:54,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-31 22:13:54,432 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 64 flow. Second operand 3 states and 42 transitions. [2024-10-31 22:13:54,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 150 flow [2024-10-31 22:13:54,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:54,436 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 70 flow [2024-10-31 22:13:54,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-10-31 22:13:54,437 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-10-31 22:13:54,438 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 70 flow [2024-10-31 22:13:54,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 22:13:54,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:54,438 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] [2024-10-31 22:13:54,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:13:54,439 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:54,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1080335954, now seen corresponding path program 2 times [2024-10-31 22:13:54,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177003288] [2024-10-31 22:13:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:54,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177003288] [2024-10-31 22:13:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177003288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556988954] [2024-10-31 22:13:54,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:13:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:54,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:54,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:13:54,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:13:54,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:54,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:13:54,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:54,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:54,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556988954] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:54,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:54,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 22:13:54,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381949335] [2024-10-31 22:13:54,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:54,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:13:54,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:13:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:13:54,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:13:54,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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 22:13:54,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:54,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:13:54,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:55,064 INFO L124 PetriNetUnfolderBase]: 167/374 cut-off events. [2024-10-31 22:13:55,065 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-10-31 22:13:55,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 374 events. 167/374 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1288 event pairs, 14 based on Foata normal form. 30/404 useless extension candidates. Maximal degree in co-relation 261. Up to 86 conditions per place. [2024-10-31 22:13:55,072 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 56 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2024-10-31 22:13:55,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 65 transitions, 344 flow [2024-10-31 22:13:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-10-31 22:13:55,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-31 22:13:55,074 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 70 flow. Second operand 6 states and 90 transitions. [2024-10-31 22:13:55,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 65 transitions, 344 flow [2024-10-31 22:13:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 65 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:55,080 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 106 flow [2024-10-31 22:13:55,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2024-10-31 22:13:55,081 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 12 predicate places. [2024-10-31 22:13:55,082 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 106 flow [2024-10-31 22:13:55,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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 22:13:55,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:55,083 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:55,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:13:55,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:55,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:55,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:55,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1211202341, now seen corresponding path program 3 times [2024-10-31 22:13:55,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:55,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95215894] [2024-10-31 22:13:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:55,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:13:55,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:55,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95215894] [2024-10-31 22:13:55,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95215894] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393125487] [2024-10-31 22:13:55,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:13:55,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:55,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:55,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:13:55,559 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-31 22:13:55,559 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:55,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:13:55,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:13:55,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:13:55,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393125487] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:55,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:55,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 22:13:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903917359] [2024-10-31 22:13:55,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:55,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:13:55,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:13:55,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:13:55,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:13:55,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 22:13:55,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:55,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:13:55,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:55,884 INFO L124 PetriNetUnfolderBase]: 289/674 cut-off events. [2024-10-31 22:13:55,884 INFO L125 PetriNetUnfolderBase]: For 920/920 co-relation queries the response was YES. [2024-10-31 22:13:55,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 674 events. 289/674 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2894 event pairs, 28 based on Foata normal form. 57/731 useless extension candidates. Maximal degree in co-relation 1212. Up to 156 conditions per place. [2024-10-31 22:13:55,892 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2024-10-31 22:13:55,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 76 transitions, 514 flow [2024-10-31 22:13:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-10-31 22:13:55,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-31 22:13:55,894 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 106 flow. Second operand 6 states and 90 transitions. [2024-10-31 22:13:55,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 76 transitions, 514 flow [2024-10-31 22:13:55,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 76 transitions, 474 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:55,899 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 138 flow [2024-10-31 22:13:55,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2024-10-31 22:13:55,900 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 20 predicate places. [2024-10-31 22:13:55,901 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 138 flow [2024-10-31 22:13:55,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 22:13:55,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:55,901 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:55,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:13:56,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:56,104 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:56,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:56,105 INFO L85 PathProgramCache]: Analyzing trace with hash 855375968, now seen corresponding path program 4 times [2024-10-31 22:13:56,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:56,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590238865] [2024-10-31 22:13:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:56,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-31 22:13:56,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590238865] [2024-10-31 22:13:56,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590238865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:56,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029007521] [2024-10-31 22:13:56,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:13:56,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:56,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:56,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:56,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:13:56,500 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:13:56,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:56,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:13:56,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-31 22:13:56,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-31 22:13:56,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029007521] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:56,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:56,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 22:13:56,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117570742] [2024-10-31 22:13:56,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:56,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:13:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:13:56,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:13:56,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:13:56,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 138 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 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 22:13:56,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:56,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:13:56,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:57,296 INFO L124 PetriNetUnfolderBase]: 642/1516 cut-off events. [2024-10-31 22:13:57,296 INFO L125 PetriNetUnfolderBase]: For 2539/2539 co-relation queries the response was YES. [2024-10-31 22:13:57,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 1516 events. 642/1516 cut-off events. For 2539/2539 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6900 event pairs, 51 based on Foata normal form. 114/1630 useless extension candidates. Maximal degree in co-relation 3154. Up to 265 conditions per place. [2024-10-31 22:13:57,310 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 144 selfloop transitions, 12 changer transitions 0/160 dead transitions. [2024-10-31 22:13:57,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 160 transitions, 1098 flow [2024-10-31 22:13:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:13:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:13:57,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-10-31 22:13:57,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-31 22:13:57,313 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 138 flow. Second operand 12 states and 189 transitions. [2024-10-31 22:13:57,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 160 transitions, 1098 flow [2024-10-31 22:13:57,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 160 transitions, 1078 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:57,326 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 226 flow [2024-10-31 22:13:57,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=226, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2024-10-31 22:13:57,327 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 37 predicate places. [2024-10-31 22:13:57,328 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 226 flow [2024-10-31 22:13:57,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 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 22:13:57,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:57,329 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:57,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:13:57,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:57,530 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:57,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1064182416, now seen corresponding path program 5 times [2024-10-31 22:13:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678537090] [2024-10-31 22:13:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-31 22:13:57,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:57,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678537090] [2024-10-31 22:13:57,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678537090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:57,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959182422] [2024-10-31 22:13:57,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:13:57,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:57,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:57,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:57,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:13:58,105 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-31 22:13:58,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:58,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:13:58,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-31 22:13:58,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-31 22:13:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959182422] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:58,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:58,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 22:13:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566869972] [2024-10-31 22:13:58,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:58,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:13:58,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:13:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:13:58,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:13:58,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 226 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 22:13:58,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:58,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:13:58,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:59,678 INFO L124 PetriNetUnfolderBase]: 1434/3383 cut-off events. [2024-10-31 22:13:59,679 INFO L125 PetriNetUnfolderBase]: For 10070/10070 co-relation queries the response was YES. [2024-10-31 22:13:59,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11992 conditions, 3383 events. 1434/3383 cut-off events. For 10070/10070 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 18782 event pairs, 117 based on Foata normal form. 258/3641 useless extension candidates. Maximal degree in co-relation 9580. Up to 583 conditions per place. [2024-10-31 22:13:59,715 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 210 selfloop transitions, 12 changer transitions 0/227 dead transitions. [2024-10-31 22:13:59,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 227 transitions, 2146 flow [2024-10-31 22:13:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:13:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:13:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-10-31 22:13:59,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-31 22:13:59,720 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 226 flow. Second operand 12 states and 189 transitions. [2024-10-31 22:13:59,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 227 transitions, 2146 flow [2024-10-31 22:13:59,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 227 transitions, 2080 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:13:59,744 INFO L231 Difference]: Finished difference. Result has 74 places, 42 transitions, 316 flow [2024-10-31 22:13:59,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=74, PETRI_TRANSITIONS=42} [2024-10-31 22:13:59,747 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 52 predicate places. [2024-10-31 22:13:59,750 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 42 transitions, 316 flow [2024-10-31 22:13:59,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 22:13:59,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:59,751 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:59,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:13:59,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:59,952 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:13:59,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1757091020, now seen corresponding path program 6 times [2024-10-31 22:13:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840272311] [2024-10-31 22:13:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-31 22:14:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840272311] [2024-10-31 22:14:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840272311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415416822] [2024-10-31 22:14:00,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 22:14:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:00,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:00,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:00,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:14:00,783 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-10-31 22:14:00,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:14:00,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:14:00,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 19 proven. 244 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-31 22:14:01,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 19 proven. 244 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-31 22:14:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415416822] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:01,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-10-31 22:14:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432543561] [2024-10-31 22:14:01,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:01,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-31 22:14:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:01,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-31 22:14:01,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=748, Unknown=0, NotChecked=0, Total=1056 [2024-10-31 22:14:01,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:14:01,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 42 transitions, 316 flow. Second operand has 33 states, 33 states have (on average 10.090909090909092) internal successors, (333), 33 states have internal predecessors, (333), 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 22:14:01,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:01,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:14:01,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:15,684 INFO L124 PetriNetUnfolderBase]: 3231/7540 cut-off events. [2024-10-31 22:14:15,684 INFO L125 PetriNetUnfolderBase]: For 47002/47002 co-relation queries the response was YES. [2024-10-31 22:14:15,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30035 conditions, 7540 events. 3231/7540 cut-off events. For 47002/47002 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 45055 event pairs, 10 based on Foata normal form. 603/8143 useless extension candidates. Maximal degree in co-relation 20856. Up to 1339 conditions per place. [2024-10-31 22:14:15,759 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 1774 selfloop transitions, 516 changer transitions 0/2295 dead transitions. [2024-10-31 22:14:15,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 2295 transitions, 16226 flow [2024-10-31 22:14:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2024-10-31 22:14:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2024-10-31 22:14:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 3696 transitions. [2024-10-31 22:14:15,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-10-31 22:14:15,771 INFO L175 Difference]: Start difference. First operand has 74 places, 42 transitions, 316 flow. Second operand 253 states and 3696 transitions. [2024-10-31 22:14:15,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 2295 transitions, 16226 flow [2024-10-31 22:14:15,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 2295 transitions, 16154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:14:15,867 INFO L231 Difference]: Finished difference. Result has 465 places, 557 transitions, 6998 flow [2024-10-31 22:14:15,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=253, PETRI_FLOW=6998, PETRI_PLACES=465, PETRI_TRANSITIONS=557} [2024-10-31 22:14:15,870 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 443 predicate places. [2024-10-31 22:14:15,871 INFO L471 AbstractCegarLoop]: Abstraction has has 465 places, 557 transitions, 6998 flow [2024-10-31 22:14:15,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.090909090909092) internal successors, (333), 33 states have internal predecessors, (333), 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 22:14:15,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:15,871 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:15,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:16,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:16,072 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:14:16,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash -14787069, now seen corresponding path program 7 times [2024-10-31 22:14:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:16,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837059243] [2024-10-31 22:14:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:16,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 20 proven. 286 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:14:16,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837059243] [2024-10-31 22:14:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837059243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207436064] [2024-10-31 22:14:16,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-31 22:14:16,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:16,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:16,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:16,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40538b6-9004-439c-9be5-a7b92ef2eeaa/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:14:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:16,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:14:17,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 20 proven. 286 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:14:17,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 20 proven. 286 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:14:17,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207436064] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:17,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:17,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-10-31 22:14:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619620321] [2024-10-31 22:14:17,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:17,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 22:14:17,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 22:14:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:14:17,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:14:17,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 557 transitions, 6998 flow. Second operand has 23 states, 23 states have (on average 10.217391304347826) internal successors, (235), 23 states have internal predecessors, (235), 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 22:14:17,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:17,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:14:17,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand