./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:38,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:39,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:39,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:39,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:39,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:39,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:39,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:39,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:39,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:39,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:39,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:39,063 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:39,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:39,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:39,065 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:39,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:39,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:39,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:39,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:39,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:39,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:39,069 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:39,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:39,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:39,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:39,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:39,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:39,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:39,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:39,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:39,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:39,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:39,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:39,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:39,074 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:39,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:39,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:39,076 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:39,076 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_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2023-11-19 07:56:39,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:39,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:39,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:39,435 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:39,435 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:39,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-19 07:56:42,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:43,156 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:43,157 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-19 07:56:43,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/data/8fbd80dfb/b3ab45fc250a42bcb38828711b7a5bd5/FLAG9d8e9f7f7 [2023-11-19 07:56:43,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/data/8fbd80dfb/b3ab45fc250a42bcb38828711b7a5bd5 [2023-11-19 07:56:43,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:43,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:43,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:43,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:43,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:43,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:43" (1/1) ... [2023-11-19 07:56:43,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b031568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:43, skipping insertion in model container [2023-11-19 07:56:43,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:43" (1/1) ... [2023-11-19 07:56:43,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:43,875 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2023-11-19 07:56:43,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:43,931 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:43,983 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2023-11-19 07:56:43,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:44,054 WARN L675 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:44,062 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:44,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44 WrapperNode [2023-11-19 07:56:44,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:44,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:44,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:44,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:44,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,136 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2023-11-19 07:56:44,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:44,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:44,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:44,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:44,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:44,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:44,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:44,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:44,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:44,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:44,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:44,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e707430-a236-4a02-b900-1f0298f6612f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:56:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:56:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:56:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:44,298 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:56:44,533 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:44,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:44,853 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:44,866 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:44,866 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-19 07:56:44,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:44 BoogieIcfgContainer [2023-11-19 07:56:44,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:44,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:44,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:44,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:44,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:43" (1/3) ... [2023-11-19 07:56:44,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a6b666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:44, skipping insertion in model container [2023-11-19 07:56:44,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (2/3) ... [2023-11-19 07:56:44,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a6b666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:44, skipping insertion in model container [2023-11-19 07:56:44,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:44" (3/3) ... [2023-11-19 07:56:44,881 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-11-19 07:56:44,891 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:44,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:44,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:56:44,902 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:45,016 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:56:45,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 150 transitions, 307 flow [2023-11-19 07:56:45,170 INFO L124 PetriNetUnfolderBase]: 24/192 cut-off events. [2023-11-19 07:56:45,170 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:45,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 192 events. 24/192 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-11-19 07:56:45,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 150 transitions, 307 flow [2023-11-19 07:56:45,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 145 transitions, 294 flow [2023-11-19 07:56:45,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:45,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 145 transitions, 294 flow [2023-11-19 07:56:45,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 145 transitions, 294 flow [2023-11-19 07:56:45,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 145 transitions, 294 flow [2023-11-19 07:56:45,261 INFO L124 PetriNetUnfolderBase]: 23/187 cut-off events. [2023-11-19 07:56:45,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:45,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 187 events. 23/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 525 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-11-19 07:56:45,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 6048 [2023-11-19 07:56:49,411 INFO L134 LiptonReduction]: Checked pairs total: 11368 [2023-11-19 07:56:49,411 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-19 07:56:49,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:49,435 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ffa8c18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:49,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:56:49,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:49,440 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-19 07:56:49,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:49,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:49,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:56:49,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:56:49,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash 161885836, now seen corresponding path program 1 times [2023-11-19 07:56:49,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:49,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062335990] [2023-11-19 07:56:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:49,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:49,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:49,657 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:56:49,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-19 07:56:49,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-19 07:56:49,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:49,662 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:56:49,673 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:56:49,673 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:56:49,729 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:56:49,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 215 transitions, 446 flow [2023-11-19 07:56:49,842 INFO L124 PetriNetUnfolderBase]: 45/325 cut-off events. [2023-11-19 07:56:49,842 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:49,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 325 events. 45/325 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1164 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2023-11-19 07:56:49,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 215 transitions, 446 flow [2023-11-19 07:56:49,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 215 transitions, 446 flow [2023-11-19 07:56:49,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:49,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 215 transitions, 446 flow [2023-11-19 07:56:49,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 215 transitions, 446 flow [2023-11-19 07:56:49,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 215 transitions, 446 flow [2023-11-19 07:56:49,917 INFO L124 PetriNetUnfolderBase]: 45/325 cut-off events. [2023-11-19 07:56:49,917 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:49,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 325 events. 45/325 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1164 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2023-11-19 07:56:49,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 21420 [2023-11-19 07:56:54,042 INFO L134 LiptonReduction]: Checked pairs total: 56288 [2023-11-19 07:56:54,042 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-11-19 07:56:54,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:54,046 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ffa8c18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:54,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:56:54,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:54,051 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-11-19 07:56:54,051 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:54,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:54,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:54,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:56:54,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1247747909, now seen corresponding path program 1 times [2023-11-19 07:56:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534830655] [2023-11-19 07:56:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:54,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534830655] [2023-11-19 07:56:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534830655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:54,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:54,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308313170] [2023-11-19 07:56:54,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:54,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:54,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:54,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 364 [2023-11-19 07:56:54,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 100 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:54,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:54,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 364 [2023-11-19 07:56:54,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:56,140 INFO L124 PetriNetUnfolderBase]: 8206/13668 cut-off events. [2023-11-19 07:56:56,140 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-19 07:56:56,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26405 conditions, 13668 events. 8206/13668 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 98421 event pairs, 3621 based on Foata normal form. 1612/13527 useless extension candidates. Maximal degree in co-relation 1751. Up to 12614 conditions per place. [2023-11-19 07:56:56,218 INFO L140 encePairwiseOnDemand]: 334/364 looper letters, 65 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2023-11-19 07:56:56,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 352 flow [2023-11-19 07:56:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-11-19 07:56:56,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860805860805861 [2023-11-19 07:56:56,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-11-19 07:56:56,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-11-19 07:56:56,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:56,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-11-19 07:56:56,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,270 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 216 flow. Second operand 3 states and 640 transitions. [2023-11-19 07:56:56,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 352 flow [2023-11-19 07:56:56,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:56,280 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 148 flow [2023-11-19 07:56:56,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-11-19 07:56:56,286 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-11-19 07:56:56,287 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 148 flow [2023-11-19 07:56:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:56,288 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:56:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:56,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:56:56,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1787072220, now seen corresponding path program 1 times [2023-11-19 07:56:56,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:56,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895675965] [2023-11-19 07:56:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:56,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:56,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:56,374 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:56:56,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-19 07:56:56,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-19 07:56:56,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:56,376 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:56:56,377 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:56:56,377 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:56:56,424 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:56:56,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 280 transitions, 587 flow [2023-11-19 07:56:56,610 INFO L124 PetriNetUnfolderBase]: 71/493 cut-off events. [2023-11-19 07:56:56,611 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:56:56,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 493 events. 71/493 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1969 event pairs, 1 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 333. Up to 16 conditions per place. [2023-11-19 07:56:56,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 280 transitions, 587 flow [2023-11-19 07:56:56,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 280 transitions, 587 flow [2023-11-19 07:56:56,626 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:56,626 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 280 transitions, 587 flow [2023-11-19 07:56:56,626 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 280 transitions, 587 flow [2023-11-19 07:56:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 280 transitions, 587 flow [2023-11-19 07:56:56,740 INFO L124 PetriNetUnfolderBase]: 71/493 cut-off events. [2023-11-19 07:56:56,740 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:56:56,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 493 events. 71/493 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1969 event pairs, 1 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 333. Up to 16 conditions per place. [2023-11-19 07:56:56,782 INFO L119 LiptonReduction]: Number of co-enabled transitions 44604 [2023-11-19 07:57:01,447 INFO L134 LiptonReduction]: Checked pairs total: 125539 [2023-11-19 07:57:01,448 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-11-19 07:57:01,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:01,452 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ffa8c18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:01,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:57:01,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:01,456 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-19 07:57:01,456 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:01,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:01,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:01,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:57:01,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1127187434, now seen corresponding path program 1 times [2023-11-19 07:57:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113188086] [2023-11-19 07:57:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:01,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113188086] [2023-11-19 07:57:01,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113188086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:01,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:01,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:01,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742473033] [2023-11-19 07:57:01,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:01,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:01,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 467 [2023-11-19 07:57:01,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:01,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:01,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 467 [2023-11-19 07:57:01,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:29,631 INFO L124 PetriNetUnfolderBase]: 184540/274802 cut-off events. [2023-11-19 07:57:29,632 INFO L125 PetriNetUnfolderBase]: For 3619/3619 co-relation queries the response was YES.