./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya --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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:34:14,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:34:14,139 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:34:14,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:34:14,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:34:14,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:34:14,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:34:14,168 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:34:14,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:34:14,169 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:34:14,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:34:14,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:34:14,171 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:34:14,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:34:14,172 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:34:14,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:34:14,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:34:14,174 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:34:14,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:34:14,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:34:14,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:34:14,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:34:14,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:34:14,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:34:14,177 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:34:14,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:34:14,178 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:34:14,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:34:14,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:34:14,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:34:14,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:34:14,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:34:14,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:34:14,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:34:14,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:34:14,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:34:14,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:34:14,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:34:14,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:34:14,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:34:14,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:34:14,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:34:14,183 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_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2023-11-29 05:34:14,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:34:14,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:34:14,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:34:14,393 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:34:14,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:34:14,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2023-11-29 05:34:17,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:34:17,357 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:34:17,357 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2023-11-29 05:34:17,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/data/207c402c7/7e1f9f01a712449da3cda4b56c6cc8b9/FLAG400ed4842 [2023-11-29 05:34:17,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/data/207c402c7/7e1f9f01a712449da3cda4b56c6cc8b9 [2023-11-29 05:34:17,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:34:17,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:34:17,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:34:17,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:34:17,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:34:17,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f350d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17, skipping insertion in model container [2023-11-29 05:34:17,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,442 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:34:17,733 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_3d0b14fe-1bec-4041-b93e-91ed2657b072/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-11-29 05:34:17,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:34:17,752 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:34:17,789 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_3d0b14fe-1bec-4041-b93e-91ed2657b072/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-11-29 05:34:17,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:34:17,830 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:34:17,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17 WrapperNode [2023-11-29 05:34:17,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:34:17,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:34:17,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:34:17,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:34:17,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,874 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2023-11-29 05:34:17,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:34:17,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:34:17,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:34:17,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:34:17,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,900 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-29 05:34:17,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:34:17,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:34:17,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:34:17,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:34:17,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (1/1) ... [2023-11-29 05:34:17,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:34:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:17,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:34:17,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0b14fe-1bec-4041-b93e-91ed2657b072/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:34:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 05:34:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 05:34:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:34:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:34:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:34:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:34:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:34:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:34:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:34:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:34:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:34:17,982 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:34:18,111 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:34:18,113 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:34:18,215 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:34:18,305 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:34:18,306 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:34:18,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:34:18 BoogieIcfgContainer [2023-11-29 05:34:18,306 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:34:18,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:34:18,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:34:18,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:34:18,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:34:17" (1/3) ... [2023-11-29 05:34:18,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393fe842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:34:18, skipping insertion in model container [2023-11-29 05:34:18,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:17" (2/3) ... [2023-11-29 05:34:18,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393fe842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:34:18, skipping insertion in model container [2023-11-29 05:34:18,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:34:18" (3/3) ... [2023-11-29 05:34:18,315 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2023-11-29 05:34:18,322 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:34:18,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:34:18,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:34:18,332 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:34:18,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:34:18,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 19 transitions, 42 flow [2023-11-29 05:34:18,410 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-29 05:34:18,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:34:18,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 3/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 16. Up to 3 conditions per place. [2023-11-29 05:34:18,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 19 transitions, 42 flow [2023-11-29 05:34:18,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 19 transitions, 42 flow [2023-11-29 05:34:18,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:34:18,431 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;@2bf93bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:34:18,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 05:34:18,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:34:18,437 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 05:34:18,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:34:18,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:18,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 05:34:18,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:18,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:18,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1655626239, now seen corresponding path program 1 times [2023-11-29 05:34:18,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:18,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346396242] [2023-11-29 05:34:18,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:18,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:18,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:34:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:18,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:34:18,611 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:34:18,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-29 05:34:18,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-29 05:34:18,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-29 05:34:18,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:34:18,615 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:34:18,619 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:34:18,619 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 05:34:18,638 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:34:18,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 33 transitions, 76 flow [2023-11-29 05:34:18,652 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2023-11-29 05:34:18,652 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:34:18,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 38 events. 6/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2023-11-29 05:34:18,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 33 transitions, 76 flow [2023-11-29 05:34:18,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 33 transitions, 76 flow [2023-11-29 05:34:18,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:34:18,657 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;@2bf93bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:34:18,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 05:34:18,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:34:18,666 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2023-11-29 05:34:18,666 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:34:18,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:18,666 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-29 05:34:18,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-29 05:34:18,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash 370936135, now seen corresponding path program 1 times [2023-11-29 05:34:18,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:18,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399356639] [2023-11-29 05:34:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:18,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:18,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:34:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:18,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:34:18,719 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:34:18,719 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-29 05:34:18,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-29 05:34:18,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-29 05:34:18,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-29 05:34:18,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:34:18,720 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:34:18,721 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:34:18,722 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 05:34:18,747 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:34:18,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 112 flow [2023-11-29 05:34:18,764 INFO L124 PetriNetUnfolderBase]: 9/55 cut-off events. [2023-11-29 05:34:18,764 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 05:34:18,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 9/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2023-11-29 05:34:18,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 47 transitions, 112 flow [2023-11-29 05:34:18,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2023-11-29 05:34:18,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:34:18,770 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;@2bf93bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:34:18,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 05:34:18,777 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:34:18,777 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2023-11-29 05:34:18,777 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 05:34:18,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:18,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:18,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 05:34:18,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1050246315, now seen corresponding path program 1 times [2023-11-29 05:34:18,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:18,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749366131] [2023-11-29 05:34:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:18,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749366131] [2023-11-29 05:34:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749366131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:18,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738914544] [2023-11-29 05:34:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:18,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:18,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-29 05:34:18,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-29 05:34:18,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:18,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-29 05:34:18,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:19,750 INFO L124 PetriNetUnfolderBase]: 3454/5586 cut-off events. [2023-11-29 05:34:19,751 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2023-11-29 05:34:19,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 5586 events. 3454/5586 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 34786 event pairs, 736 based on Foata normal form. 564/5799 useless extension candidates. Maximal degree in co-relation 4764. Up to 2085 conditions per place. [2023-11-29 05:34:19,835 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 52 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-11-29 05:34:19,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 296 flow [2023-11-29 05:34:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:34:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-29 05:34:19,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7127659574468085 [2023-11-29 05:34:19,849 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-29 05:34:19,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-29 05:34:19,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:19,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-29 05:34:19,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2023-11-29 05:34:19,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 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) [2023-11-29 05:34:19,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 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) [2023-11-29 05:34:19,861 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 4 states and 134 transitions. [2023-11-29 05:34:19,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 296 flow [2023-11-29 05:34:19,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 290 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-29 05:34:19,868 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 106 flow [2023-11-29 05:34:19,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-29 05:34:19,874 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-29 05:34:19,874 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 106 flow [2023-11-29 05:34:19,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-29 05:34:19,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:19,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:34:19,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 05:34:19,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1050247338, now seen corresponding path program 1 times [2023-11-29 05:34:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27268516] [2023-11-29 05:34:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:19,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27268516] [2023-11-29 05:34:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27268516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605641683] [2023-11-29 05:34:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:19,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:19,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2023-11-29 05:34:19,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-29 05:34:19,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:19,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2023-11-29 05:34:19,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:20,480 INFO L124 PetriNetUnfolderBase]: 3454/5328 cut-off events. [2023-11-29 05:34:20,480 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2023-11-29 05:34:20,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10724 conditions, 5328 events. 3454/5328 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31011 event pairs, 736 based on Foata normal form. 129/5214 useless extension candidates. Maximal degree in co-relation 8547. Up to 2085 conditions per place. [2023-11-29 05:34:20,516 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 53 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-29 05:34:20,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 290 flow [2023-11-29 05:34:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:34:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-29 05:34:20,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2023-11-29 05:34:20,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-29 05:34:20,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-29 05:34:20,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:20,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-29 05:34:20,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:20,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 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) [2023-11-29 05:34:20,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 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) [2023-11-29 05:34:20,522 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 106 flow. Second operand 4 states and 120 transitions. [2023-11-29 05:34:20,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 290 flow [2023-11-29 05:34:20,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:34:20,526 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 101 flow [2023-11-29 05:34:20,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-29 05:34:20,527 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-11-29 05:34:20,527 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 101 flow [2023-11-29 05:34:20,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-29 05:34:20,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:20,528 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-29 05:34:20,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:34:20,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 05:34:20,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash -315337826, now seen corresponding path program 1 times [2023-11-29 05:34:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:20,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267935456] [2023-11-29 05:34:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:20,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:34:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:20,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:34:20,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:34:20,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-29 05:34:20,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 05:34:20,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-29 05:34:20,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-29 05:34:20,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 05:34:20,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:34:20,563 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 05:34:20,563 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:34:20,564 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 05:34:20,591 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:34:20,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 61 transitions, 150 flow [2023-11-29 05:34:20,599 INFO L124 PetriNetUnfolderBase]: 12/72 cut-off events. [2023-11-29 05:34:20,599 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 05:34:20,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 72 events. 12/72 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 67. Up to 5 conditions per place. [2023-11-29 05:34:20,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 61 transitions, 150 flow [2023-11-29 05:34:20,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 61 transitions, 150 flow [2023-11-29 05:34:20,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:34:20,603 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;@2bf93bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:34:20,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 05:34:20,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:34:20,606 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2023-11-29 05:34:20,606 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 05:34:20,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:20,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:20,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 05:34:20,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash 546893205, now seen corresponding path program 1 times [2023-11-29 05:34:20,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:20,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150407273] [2023-11-29 05:34:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:20,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:20,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150407273] [2023-11-29 05:34:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150407273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:20,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:20,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:20,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479867635] [2023-11-29 05:34:20,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:20,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:20,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:20,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:20,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-29 05:34:20,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 05:34:20,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:20,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-29 05:34:20,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:24,021 INFO L124 PetriNetUnfolderBase]: 28492/41307 cut-off events. [2023-11-29 05:34:24,021 INFO L125 PetriNetUnfolderBase]: For 5011/5011 co-relation queries the response was YES. [2023-11-29 05:34:24,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80861 conditions, 41307 events. 28492/41307 cut-off events. For 5011/5011 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 289133 event pairs, 6352 based on Foata normal form. 4892/44047 useless extension candidates. Maximal degree in co-relation 10947. Up to 15765 conditions per place. [2023-11-29 05:34:24,232 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 70 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-11-29 05:34:24,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 410 flow [2023-11-29 05:34:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:34:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2023-11-29 05:34:24,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 05:34:24,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 183 transitions. [2023-11-29 05:34:24,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 183 transitions. [2023-11-29 05:34:24,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:24,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 183 transitions. [2023-11-29 05:34:24,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2023-11-29 05:34:24,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:24,238 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:24,238 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 150 flow. Second operand 4 states and 183 transitions. [2023-11-29 05:34:24,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 410 flow [2023-11-29 05:34:24,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 392 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-29 05:34:24,244 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 138 flow [2023-11-29 05:34:24,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-11-29 05:34:24,245 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-29 05:34:24,245 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 138 flow [2023-11-29 05:34:24,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 05:34:24,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:24,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:24,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:34:24,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 05:34:24,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash 546894228, now seen corresponding path program 1 times [2023-11-29 05:34:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140377770] [2023-11-29 05:34:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:24,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:24,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140377770] [2023-11-29 05:34:24,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140377770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:24,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579975721] [2023-11-29 05:34:24,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:24,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2023-11-29 05:34:24,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-11-29 05:34:24,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:24,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2023-11-29 05:34:24,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:26,991 INFO L124 PetriNetUnfolderBase]: 28492/39753 cut-off events. [2023-11-29 05:34:26,991 INFO L125 PetriNetUnfolderBase]: For 2566/2566 co-relation queries the response was YES. [2023-11-29 05:34:27,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79926 conditions, 39753 events. 28492/39753 cut-off events. For 2566/2566 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 258372 event pairs, 6352 based on Foata normal form. 777/39029 useless extension candidates. Maximal degree in co-relation 65082. Up to 15765 conditions per place. [2023-11-29 05:34:27,188 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 71 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-29 05:34:27,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 392 flow [2023-11-29 05:34:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:34:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2023-11-29 05:34:27,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.680327868852459 [2023-11-29 05:34:27,190 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 166 transitions. [2023-11-29 05:34:27,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 166 transitions. [2023-11-29 05:34:27,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:27,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 166 transitions. [2023-11-29 05:34:27,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2023-11-29 05:34:27,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:27,193 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:27,193 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 138 flow. Second operand 4 states and 166 transitions. [2023-11-29 05:34:27,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 392 flow [2023-11-29 05:34:27,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:34:27,200 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 133 flow [2023-11-29 05:34:27,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-29 05:34:27,201 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-29 05:34:27,202 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 133 flow [2023-11-29 05:34:27,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-11-29 05:34:27,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:27,202 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:27,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:34:27,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 05:34:27,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash -135844057, now seen corresponding path program 1 times [2023-11-29 05:34:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920493092] [2023-11-29 05:34:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:27,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:34:27,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920493092] [2023-11-29 05:34:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920493092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294128200] [2023-11-29 05:34:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:27,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:27,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:27,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-29 05:34:27,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2023-11-29 05:34:27,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:27,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-29 05:34:27,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:30,816 INFO L124 PetriNetUnfolderBase]: 38482/55572 cut-off events. [2023-11-29 05:34:30,816 INFO L125 PetriNetUnfolderBase]: For 3976/3976 co-relation queries the response was YES. [2023-11-29 05:34:30,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109068 conditions, 55572 events. 38482/55572 cut-off events. For 3976/3976 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 402257 event pairs, 8611 based on Foata normal form. 0/51210 useless extension candidates. Maximal degree in co-relation 81252. Up to 21195 conditions per place. [2023-11-29 05:34:31,113 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 68 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-11-29 05:34:31,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 377 flow [2023-11-29 05:34:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:34:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2023-11-29 05:34:31,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6885245901639344 [2023-11-29 05:34:31,115 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 168 transitions. [2023-11-29 05:34:31,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 168 transitions. [2023-11-29 05:34:31,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:31,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 168 transitions. [2023-11-29 05:34:31,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2023-11-29 05:34:31,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:31,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:31,118 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 133 flow. Second operand 4 states and 168 transitions. [2023-11-29 05:34:31,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 377 flow [2023-11-29 05:34:31,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:34:31,126 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 134 flow [2023-11-29 05:34:31,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-29 05:34:31,127 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-29 05:34:31,128 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 134 flow [2023-11-29 05:34:31,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2023-11-29 05:34:31,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:31,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:31,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:34:31,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 05:34:31,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash -135843034, now seen corresponding path program 1 times [2023-11-29 05:34:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547058131] [2023-11-29 05:34:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:34:31,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:31,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547058131] [2023-11-29 05:34:31,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547058131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:31,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:31,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:31,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014249599] [2023-11-29 05:34:31,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:31,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:31,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:31,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:31,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2023-11-29 05:34:31,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-29 05:34:31,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:31,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2023-11-29 05:34:31,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:34,693 INFO L124 PetriNetUnfolderBase]: 38482/53508 cut-off events. [2023-11-29 05:34:34,693 INFO L125 PetriNetUnfolderBase]: For 3442/3442 co-relation queries the response was YES. [2023-11-29 05:34:34,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107517 conditions, 53508 events. 38482/53508 cut-off events. For 3442/3442 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 360669 event pairs, 8611 based on Foata normal form. 1032/51036 useless extension candidates. Maximal degree in co-relation 79704. Up to 21195 conditions per place. [2023-11-29 05:34:34,919 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 69 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-29 05:34:34,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 370 flow [2023-11-29 05:34:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:34:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2023-11-29 05:34:34,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6721311475409836 [2023-11-29 05:34:34,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 164 transitions. [2023-11-29 05:34:34,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 164 transitions. [2023-11-29 05:34:34,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:34,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 164 transitions. [2023-11-29 05:34:34,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2023-11-29 05:34:34,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:34,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:34:34,924 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 134 flow. Second operand 4 states and 164 transitions. [2023-11-29 05:34:34,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 370 flow [2023-11-29 05:34:34,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:34:34,934 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 129 flow [2023-11-29 05:34:34,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-11-29 05:34:34,935 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-29 05:34:34,935 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 129 flow [2023-11-29 05:34:34,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-29 05:34:34,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:34,935 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:34,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:34:34,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 05:34:34,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1585694516, now seen corresponding path program 1 times [2023-11-29 05:34:34,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:34,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677199358] [2023-11-29 05:34:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:34,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:34:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:34:34,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:34:34,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:34:34,960 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 05:34:34,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-29 05:34:34,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-29 05:34:34,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-29 05:34:34,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-29 05:34:34,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-29 05:34:34,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:34:34,961 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 05:34:34,961 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:34:34,962 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 05:34:34,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:34:34,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 75 transitions, 190 flow [2023-11-29 05:34:34,996 INFO L124 PetriNetUnfolderBase]: 15/89 cut-off events. [2023-11-29 05:34:34,997 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:34:34,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 89 events. 15/89 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 230 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-11-29 05:34:34,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 75 transitions, 190 flow [2023-11-29 05:34:34,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 75 transitions, 190 flow [2023-11-29 05:34:34,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:34:34,999 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;@2bf93bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:34:34,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 05:34:35,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:34:35,002 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2023-11-29 05:34:35,002 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 05:34:35,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:35,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:35,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 05:34:35,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1676329523, now seen corresponding path program 1 times [2023-11-29 05:34:35,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:35,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112605210] [2023-11-29 05:34:35,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:35,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112605210] [2023-11-29 05:34:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112605210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:35,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:35,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743819509] [2023-11-29 05:34:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:35,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:35,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2023-11-29 05:34:35,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2023-11-29 05:34:35,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:35,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2023-11-29 05:34:35,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:55,301 INFO L124 PetriNetUnfolderBase]: 217600/294522 cut-off events. [2023-11-29 05:34:55,301 INFO L125 PetriNetUnfolderBase]: For 46094/46094 co-relation queries the response was YES. [2023-11-29 05:34:55,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581613 conditions, 294522 events. 217600/294522 cut-off events. For 46094/46094 co-relation queries the response was YES. Maximal size of possible extension queue 9086. Compared 2202148 event pairs, 49768 based on Foata normal form. 38646/320220 useless extension candidates. Maximal degree in co-relation 80810. Up to 114045 conditions per place. [2023-11-29 05:34:57,304 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 88 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2023-11-29 05:34:57,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 122 transitions, 530 flow [2023-11-29 05:34:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:34:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2023-11-29 05:34:57,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2023-11-29 05:34:57,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 232 transitions. [2023-11-29 05:34:57,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 232 transitions. [2023-11-29 05:34:57,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:57,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 232 transitions. [2023-11-29 05:34:57,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-11-29 05:34:57,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2023-11-29 05:34:57,309 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2023-11-29 05:34:57,309 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 190 flow. Second operand 4 states and 232 transitions. [2023-11-29 05:34:57,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 122 transitions, 530 flow [2023-11-29 05:34:57,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 122 transitions, 494 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-11-29 05:34:57,321 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 170 flow [2023-11-29 05:34:57,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-11-29 05:34:57,323 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-11-29 05:34:57,323 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 170 flow [2023-11-29 05:34:57,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2023-11-29 05:34:57,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:57,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:57,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:34:57,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 05:34:57,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1676328500, now seen corresponding path program 1 times [2023-11-29 05:34:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:57,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008864198] [2023-11-29 05:34:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008864198] [2023-11-29 05:34:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008864198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:57,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:57,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:57,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700615093] [2023-11-29 05:34:57,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:57,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:57,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:57,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:57,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2023-11-29 05:34:57,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-11-29 05:34:57,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:57,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2023-11-29 05:34:57,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:17,042 INFO L124 PetriNetUnfolderBase]: 217600/285192 cut-off events. [2023-11-29 05:35:17,043 INFO L125 PetriNetUnfolderBase]: For 16568/16568 co-relation queries the response was YES. [2023-11-29 05:35:17,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572902 conditions, 285192 events. 217600/285192 cut-off events. For 16568/16568 co-relation queries the response was YES. Maximal size of possible extension queue 8443. Compared 1973911 event pairs, 49768 based on Foata normal form. 4665/280818 useless extension candidates. Maximal degree in co-relation 469092. Up to 114045 conditions per place. [2023-11-29 05:35:18,887 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 89 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-11-29 05:35:18,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 120 transitions, 494 flow [2023-11-29 05:35:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2023-11-29 05:35:18,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2023-11-29 05:35:18,889 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 212 transitions. [2023-11-29 05:35:18,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 212 transitions. [2023-11-29 05:35:18,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:18,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 212 transitions. [2023-11-29 05:35:18,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2023-11-29 05:35:18,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2023-11-29 05:35:18,891 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2023-11-29 05:35:18,891 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 170 flow. Second operand 4 states and 212 transitions. [2023-11-29 05:35:18,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 120 transitions, 494 flow [2023-11-29 05:35:18,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:35:18,912 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 165 flow [2023-11-29 05:35:18,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2023-11-29 05:35:18,913 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2023-11-29 05:35:18,913 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 165 flow [2023-11-29 05:35:18,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-11-29 05:35:18,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:18,914 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:18,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:35:18,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 05:35:18,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash 517314983, now seen corresponding path program 1 times [2023-11-29 05:35:18,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322402528] [2023-11-29 05:35:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:18,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:35:18,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:18,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322402528] [2023-11-29 05:35:18,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322402528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:18,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:18,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:35:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844773417] [2023-11-29 05:35:18,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:18,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:18,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:18,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2023-11-29 05:35:18,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2023-11-29 05:35:18,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:18,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2023-11-29 05:35:18,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:44,710 INFO L124 PetriNetUnfolderBase]: 293218/395772 cut-off events. [2023-11-29 05:35:44,710 INFO L125 PetriNetUnfolderBase]: For 25142/25142 co-relation queries the response was YES. [2023-11-29 05:35:45,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779317 conditions, 395772 events. 293218/395772 cut-off events. For 25142/25142 co-relation queries the response was YES. Maximal size of possible extension queue 12384. Compared 3045130 event pairs, 67147 based on Foata normal form. 0/369226 useless extension candidates. Maximal degree in co-relation 581778. Up to 153315 conditions per place. [2023-11-29 05:35:47,317 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 86 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-11-29 05:35:47,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 117 transitions, 479 flow [2023-11-29 05:35:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2023-11-29 05:35:47,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7133333333333334 [2023-11-29 05:35:47,319 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 214 transitions. [2023-11-29 05:35:47,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 214 transitions. [2023-11-29 05:35:47,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:47,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 214 transitions. [2023-11-29 05:35:47,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2023-11-29 05:35:47,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2023-11-29 05:35:47,321 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2023-11-29 05:35:47,321 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 165 flow. Second operand 4 states and 214 transitions. [2023-11-29 05:35:47,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 117 transitions, 479 flow [2023-11-29 05:35:47,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:35:47,357 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 166 flow [2023-11-29 05:35:47,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-11-29 05:35:47,358 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-11-29 05:35:47,358 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 166 flow [2023-11-29 05:35:47,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2023-11-29 05:35:47,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:47,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:47,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:35:47,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 05:35:47,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 517316006, now seen corresponding path program 1 times [2023-11-29 05:35:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299525033] [2023-11-29 05:35:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:47,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:35:47,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:47,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299525033] [2023-11-29 05:35:47,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299525033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:47,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:47,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:35:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604916547] [2023-11-29 05:35:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:47,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2023-11-29 05:35:47,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2023-11-29 05:35:47,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:47,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2023-11-29 05:35:47,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand