./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:08,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:08,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:58:08,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:08,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:09,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:09,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:09,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:09,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:09,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:09,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:09,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:09,062 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:09,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:09,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:58:09,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:09,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:09,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:09,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:09,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:58:09,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:09,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:58:09,067 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:09,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:58:09,068 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:09,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:09,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:09,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:09,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:09,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:09,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:09,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:58:09,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:09,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:09,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:09,074 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:58:09,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:09,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:09,074 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:09,075 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_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2023-11-06 21:58:09,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:09,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:09,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:09,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:09,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:09,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2023-11-06 21:58:12,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:58:12,939 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:58:12,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2023-11-06 21:58:12,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/data/58e9023a9/c29b35cd5bdc412484129defee44b0c2/FLAG7c205e367 [2023-11-06 21:58:12,974 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/data/58e9023a9/c29b35cd5bdc412484129defee44b0c2 [2023-11-06 21:58:12,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:58:12,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:58:12,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:12,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:58:12,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:58:12,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:12" (1/1) ... [2023-11-06 21:58:12,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3f5712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:12, skipping insertion in model container [2023-11-06 21:58:12,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:12" (1/1) ... [2023-11-06 21:58:13,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:58:13,260 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_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2023-11-06 21:58:13,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:13,550 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:58:13,566 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_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2023-11-06 21:58:13,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:13,684 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:58:13,685 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:58:13,693 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:58:13,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13 WrapperNode [2023-11-06 21:58:13,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:13,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:13,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:58:13,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:58:13,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,773 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-06 21:58:13,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:13,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:58:13,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:58:13,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:58:13,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:58:13,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:58:13,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:58:13,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:58:13,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:13,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:13,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:58:13,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:58:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:58:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:58:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:58:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:58:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:58:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:58:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:58:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:58:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:58:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 21:58:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 21:58:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:58:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:58:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:58:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:58:14,025 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:58:14,177 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:58:14,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:58:14,393 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:58:14,401 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:58:14,401 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:58:14,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:14 BoogieIcfgContainer [2023-11-06 21:58:14,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:58:14,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:58:14,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:58:14,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:58:14,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:12" (1/3) ... [2023-11-06 21:58:14,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608028a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:14, skipping insertion in model container [2023-11-06 21:58:14,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (2/3) ... [2023-11-06 21:58:14,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608028a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:14, skipping insertion in model container [2023-11-06 21:58:14,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:14" (3/3) ... [2023-11-06 21:58:14,422 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-11-06 21:58:14,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:58:14,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:58:14,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:58:14,445 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:58:14,519 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:58:14,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 190 flow [2023-11-06 21:58:14,644 INFO L124 PetriNetUnfolderBase]: 2/86 cut-off events. [2023-11-06 21:58:14,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:58:14,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-06 21:58:14,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 190 flow [2023-11-06 21:58:14,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-11-06 21:58:14,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:58:14,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-11-06 21:58:14,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-11-06 21:58:14,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-11-06 21:58:14,711 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-11-06 21:58:14,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:58:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-06 21:58:14,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 1080 [2023-11-06 21:58:17,349 INFO L134 LiptonReduction]: Checked pairs total: 2081 [2023-11-06 21:58:17,349 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-11-06 21:58:17,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:17,387 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=LoopsAndPotentialCycles, 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;@7c0171a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:17,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 21:58:17,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:58:17,407 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-06 21:58:17,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:58:17,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:17,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:17,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:17,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash 412092592, now seen corresponding path program 1 times [2023-11-06 21:58:17,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:17,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70043889] [2023-11-06 21:58:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:17,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:18,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70043889] [2023-11-06 21:58:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70043889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:18,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:18,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:58:18,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746558979] [2023-11-06 21:58:18,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:18,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:18,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:18,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:18,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 149 [2023-11-06 21:58:18,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2023-11-06 21:58:18,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:18,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 149 [2023-11-06 21:58:18,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:18,195 INFO L124 PetriNetUnfolderBase]: 222/386 cut-off events. [2023-11-06 21:58:18,197 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 21:58:18,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 386 events. 222/386 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1633 event pairs, 69 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 774. Up to 340 conditions per place. [2023-11-06 21:58:18,207 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 21 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-11-06 21:58:18,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 115 flow [2023-11-06 21:58:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-06 21:58:18,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771812080536913 [2023-11-06 21:58:18,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-06 21:58:18,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-06 21:58:18,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:18,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-06 21:58:18,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2023-11-06 21:58:18,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:18,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:18,255 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 258 transitions. [2023-11-06 21:58:18,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 115 flow [2023-11-06 21:58:18,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:18,261 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-11-06 21:58:18,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-06 21:58:18,268 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-06 21:58:18,269 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-11-06 21:58:18,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2023-11-06 21:58:18,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:18,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:58:18,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:18,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash -110032112, now seen corresponding path program 1 times [2023-11-06 21:58:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538130086] [2023-11-06 21:58:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:18,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538130086] [2023-11-06 21:58:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538130086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:18,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758951623] [2023-11-06 21:58:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:18,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:18,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:18,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 149 [2023-11-06 21:58:18,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-11-06 21:58:18,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:18,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 149 [2023-11-06 21:58:18,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:18,656 INFO L124 PetriNetUnfolderBase]: 201/362 cut-off events. [2023-11-06 21:58:18,656 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 21:58:18,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 362 events. 201/362 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1460 event pairs, 75 based on Foata normal form. 9/367 useless extension candidates. Maximal degree in co-relation 820. Up to 211 conditions per place. [2023-11-06 21:58:18,664 INFO L140 encePairwiseOnDemand]: 146/149 looper letters, 19 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-11-06 21:58:18,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 113 flow [2023-11-06 21:58:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-11-06 21:58:18,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659955257270693 [2023-11-06 21:58:18,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-11-06 21:58:18,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-11-06 21:58:18,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:18,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-11-06 21:58:18,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2023-11-06 21:58:18,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:18,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:18,678 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 253 transitions. [2023-11-06 21:58:18,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 113 flow [2023-11-06 21:58:18,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:18,682 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 67 flow [2023-11-06 21:58:18,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-11-06 21:58:18,683 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-11-06 21:58:18,689 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2023-11-06 21:58:18,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-11-06 21:58:18,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:18,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:18,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:58:18,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:18,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash -110032825, now seen corresponding path program 1 times [2023-11-06 21:58:18,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:18,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337423080] [2023-11-06 21:58:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:18,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337423080] [2023-11-06 21:58:18,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337423080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:18,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:18,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:18,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709215656] [2023-11-06 21:58:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:18,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:18,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:18,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:18,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 149 [2023-11-06 21:58:18,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-11-06 21:58:18,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:18,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 149 [2023-11-06 21:58:18,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:19,059 INFO L124 PetriNetUnfolderBase]: 188/337 cut-off events. [2023-11-06 21:58:19,060 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-06 21:58:19,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 337 events. 188/337 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1369 event pairs, 91 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 810. Up to 265 conditions per place. [2023-11-06 21:58:19,064 INFO L140 encePairwiseOnDemand]: 146/149 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-11-06 21:58:19,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 137 flow [2023-11-06 21:58:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-11-06 21:58:19,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727069351230425 [2023-11-06 21:58:19,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-11-06 21:58:19,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-11-06 21:58:19,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:19,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-11-06 21:58:19,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-11-06 21:58:19,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:19,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:19,070 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 3 states and 256 transitions. [2023-11-06 21:58:19,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 137 flow [2023-11-06 21:58:19,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:19,072 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 72 flow [2023-11-06 21:58:19,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2023-11-06 21:58:19,073 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-11-06 21:58:19,074 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 72 flow [2023-11-06 21:58:19,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-11-06 21:58:19,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:19,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:19,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:58:19,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:19,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash 883970535, now seen corresponding path program 1 times [2023-11-06 21:58:19,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:19,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44267904] [2023-11-06 21:58:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44267904] [2023-11-06 21:58:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44267904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:19,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:19,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798739337] [2023-11-06 21:58:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:58:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:58:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:58:19,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 149 [2023-11-06 21:58:19,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-06 21:58:19,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:19,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 149 [2023-11-06 21:58:19,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:19,358 INFO L124 PetriNetUnfolderBase]: 282/473 cut-off events. [2023-11-06 21:58:19,359 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2023-11-06 21:58:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 473 events. 282/473 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1877 event pairs, 115 based on Foata normal form. 27/496 useless extension candidates. Maximal degree in co-relation 1164. Up to 190 conditions per place. [2023-11-06 21:58:19,363 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 20 selfloop transitions, 3 changer transitions 7/31 dead transitions. [2023-11-06 21:58:19,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 161 flow [2023-11-06 21:58:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:58:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-11-06 21:58:19,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536912751677853 [2023-11-06 21:58:19,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-11-06 21:58:19,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-11-06 21:58:19,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:19,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-11-06 21:58:19,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2023-11-06 21:58:19,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:19,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:19,370 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 72 flow. Second operand 4 states and 330 transitions. [2023-11-06 21:58:19,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 161 flow [2023-11-06 21:58:19,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 153 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:19,373 INFO L231 Difference]: Finished difference. Result has 33 places, 17 transitions, 70 flow [2023-11-06 21:58:19,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2023-11-06 21:58:19,374 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-06 21:58:19,374 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 70 flow [2023-11-06 21:58:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-06 21:58:19,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:19,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:19,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:58:19,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:19,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1591472967, now seen corresponding path program 1 times [2023-11-06 21:58:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:19,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334866518] [2023-11-06 21:58:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:19,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334866518] [2023-11-06 21:58:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334866518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:19,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:19,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:19,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973492951] [2023-11-06 21:58:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:58:19,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:58:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:58:19,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 149 [2023-11-06 21:58:19,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-06 21:58:19,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:19,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 149 [2023-11-06 21:58:19,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:19,651 INFO L124 PetriNetUnfolderBase]: 173/306 cut-off events. [2023-11-06 21:58:19,651 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2023-11-06 21:58:19,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 306 events. 173/306 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1137 event pairs, 73 based on Foata normal form. 24/326 useless extension candidates. Maximal degree in co-relation 796. Up to 109 conditions per place. [2023-11-06 21:58:19,653 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 18 selfloop transitions, 3 changer transitions 9/31 dead transitions. [2023-11-06 21:58:19,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 175 flow [2023-11-06 21:58:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:58:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-06 21:58:19,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570469798657718 [2023-11-06 21:58:19,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-06 21:58:19,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-06 21:58:19,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:19,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-06 21:58:19,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:19,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:19,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:19,660 INFO L175 Difference]: Start difference. First operand has 33 places, 17 transitions, 70 flow. Second operand 4 states and 332 transitions. [2023-11-06 21:58:19,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 175 flow [2023-11-06 21:58:19,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 136 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-11-06 21:58:19,667 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2023-11-06 21:58:19,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2023-11-06 21:58:19,670 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-11-06 21:58:19,670 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2023-11-06 21:58:19,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-06 21:58:19,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:19,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:19,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:58:19,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:19,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:19,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1669475090, now seen corresponding path program 1 times [2023-11-06 21:58:19,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:19,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388316071] [2023-11-06 21:58:19,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:19,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:19,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388316071] [2023-11-06 21:58:19,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388316071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:19,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:19,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620153806] [2023-11-06 21:58:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:19,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:19,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:19,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:19,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 149 [2023-11-06 21:58:19,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2023-11-06 21:58:19,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:19,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 149 [2023-11-06 21:58:19,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:19,831 INFO L124 PetriNetUnfolderBase]: 38/84 cut-off events. [2023-11-06 21:58:19,831 INFO L125 PetriNetUnfolderBase]: For 38/39 co-relation queries the response was YES. [2023-11-06 21:58:19,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 84 events. 38/84 cut-off events. For 38/39 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 210 event pairs, 14 based on Foata normal form. 4/86 useless extension candidates. Maximal degree in co-relation 207. Up to 68 conditions per place. [2023-11-06 21:58:19,832 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 17 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2023-11-06 21:58:19,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 120 flow [2023-11-06 21:58:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-11-06 21:58:19,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794183445190156 [2023-11-06 21:58:19,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-11-06 21:58:19,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-11-06 21:58:19,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:19,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-11-06 21:58:19,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-11-06 21:58:19,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:19,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-11-06 21:58:19,838 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 3 states and 259 transitions. [2023-11-06 21:58:19,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 120 flow [2023-11-06 21:58:19,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 106 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:19,840 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 72 flow [2023-11-06 21:58:19,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-11-06 21:58:19,841 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-11-06 21:58:19,841 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 72 flow [2023-11-06 21:58:19,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2023-11-06 21:58:19,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:19,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:19,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:58:19,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:19,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:19,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1942280124, now seen corresponding path program 1 times [2023-11-06 21:58:19,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:19,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716623827] [2023-11-06 21:58:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:20,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:20,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716623827] [2023-11-06 21:58:20,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716623827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:20,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428529815] [2023-11-06 21:58:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:20,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:20,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 149 [2023-11-06 21:58:20,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-06 21:58:20,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:20,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 149 [2023-11-06 21:58:20,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:20,079 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2023-11-06 21:58:20,079 INFO L125 PetriNetUnfolderBase]: For 22/27 co-relation queries the response was YES. [2023-11-06 21:58:20,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 60 events. 21/60 cut-off events. For 22/27 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 4 based on Foata normal form. 8/67 useless extension candidates. Maximal degree in co-relation 168. Up to 31 conditions per place. [2023-11-06 21:58:20,080 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 18 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2023-11-06 21:58:20,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 149 flow [2023-11-06 21:58:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:58:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-11-06 21:58:20,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5738255033557047 [2023-11-06 21:58:20,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-11-06 21:58:20,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-11-06 21:58:20,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:20,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-11-06 21:58:20,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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) [2023-11-06 21:58:20,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:20,087 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:20,087 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 72 flow. Second operand 4 states and 342 transitions. [2023-11-06 21:58:20,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 149 flow [2023-11-06 21:58:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:20,090 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 108 flow [2023-11-06 21:58:20,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-06 21:58:20,092 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-06 21:58:20,092 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 108 flow [2023-11-06 21:58:20,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-06 21:58:20,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:20,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:20,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:58:20,093 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:20,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1536126589, now seen corresponding path program 1 times [2023-11-06 21:58:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:20,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005589650] [2023-11-06 21:58:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:20,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:20,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:20,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005589650] [2023-11-06 21:58:20,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005589650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:20,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:20,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:58:20,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228747579] [2023-11-06 21:58:20,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:20,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:58:20,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:20,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:58:20,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:58:20,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 149 [2023-11-06 21:58:20,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 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) [2023-11-06 21:58:20,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:20,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 149 [2023-11-06 21:58:20,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:20,343 INFO L124 PetriNetUnfolderBase]: 14/46 cut-off events. [2023-11-06 21:58:20,343 INFO L125 PetriNetUnfolderBase]: For 71/82 co-relation queries the response was YES. [2023-11-06 21:58:20,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 46 events. 14/46 cut-off events. For 71/82 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 2 based on Foata normal form. 10/55 useless extension candidates. Maximal degree in co-relation 146. Up to 21 conditions per place. [2023-11-06 21:58:20,348 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 15 selfloop transitions, 10 changer transitions 0/28 dead transitions. [2023-11-06 21:58:20,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 173 flow [2023-11-06 21:58:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:58:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:58:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-11-06 21:58:20,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651006711409396 [2023-11-06 21:58:20,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-11-06 21:58:20,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-11-06 21:58:20,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:20,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-11-06 21:58:20,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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) [2023-11-06 21:58:20,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 149.0) internal successors, (894), 6 states have internal predecessors, (894), 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) [2023-11-06 21:58:20,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 149.0) internal successors, (894), 6 states have internal predecessors, (894), 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) [2023-11-06 21:58:20,357 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 108 flow. Second operand 5 states and 421 transitions. [2023-11-06 21:58:20,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 173 flow [2023-11-06 21:58:20,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 153 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:20,360 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 118 flow [2023-11-06 21:58:20,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-06 21:58:20,363 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-06 21:58:20,363 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 118 flow [2023-11-06 21:58:20,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 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) [2023-11-06 21:58:20,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:20,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:20,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:58:20,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:58:20,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1253217221, now seen corresponding path program 1 times [2023-11-06 21:58:20,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:20,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676208828] [2023-11-06 21:58:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676208828] [2023-11-06 21:58:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676208828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:20,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:20,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:20,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634854353] [2023-11-06 21:58:20,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:20,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:20,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:20,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 149 [2023-11-06 21:58:20,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2023-11-06 21:58:20,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:20,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 149 [2023-11-06 21:58:20,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:20,624 INFO L124 PetriNetUnfolderBase]: 18/52 cut-off events. [2023-11-06 21:58:20,624 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-06 21:58:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 52 events. 18/52 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 4 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 173. Up to 24 conditions per place. [2023-11-06 21:58:20,625 INFO L140 encePairwiseOnDemand]: 146/149 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-11-06 21:58:20,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 204 flow [2023-11-06 21:58:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:58:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2023-11-06 21:58:20,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620805369127517 [2023-11-06 21:58:20,627 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 335 transitions. [2023-11-06 21:58:20,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 335 transitions. [2023-11-06 21:58:20,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:20,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 335 transitions. [2023-11-06 21:58:20,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2023-11-06 21:58:20,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:20,631 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-11-06 21:58:20,631 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 118 flow. Second operand 4 states and 335 transitions. [2023-11-06 21:58:20,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 204 flow [2023-11-06 21:58:20,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 172 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:20,634 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-11-06 21:58:20,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-11-06 21:58:20,635 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-06 21:58:20,635 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-11-06 21:58:20,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2023-11-06 21:58:20,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 21:58:20,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 21:58:20,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 21:58:20,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 21:58:20,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:58:20,641 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:20,644 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:58:20,644 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:58:20,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:58:20 BasicIcfg [2023-11-06 21:58:20,651 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:58:20,651 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:58:20,651 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:58:20,652 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:58:20,652 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:14" (3/4) ... [2023-11-06 21:58:20,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:58:20,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 21:58:20,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 21:58:20,660 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 21:58:20,666 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 21:58:20,666 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 21:58:20,667 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:58:20,667 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:58:20,722 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:58:20,723 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:58:20,723 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:58:20,724 INFO L158 Benchmark]: Toolchain (without parser) took 7745.40ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 146.7MB in the beginning and 150.8MB in the end (delta: -4.0MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2023-11-06 21:58:20,724 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 95.2MB in the beginning and 95.1MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:58:20,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 714.49ms. Allocated memory is still 176.2MB. Free memory was 146.4MB in the beginning and 125.9MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:58:20,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.13ms. Allocated memory is still 176.2MB. Free memory was 125.9MB in the beginning and 123.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:20,725 INFO L158 Benchmark]: Boogie Preprocessor took 63.25ms. Allocated memory is still 176.2MB. Free memory was 123.7MB in the beginning and 121.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:20,726 INFO L158 Benchmark]: RCFGBuilder took 568.73ms. Allocated memory is still 176.2MB. Free memory was 121.8MB in the beginning and 134.7MB in the end (delta: -13.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 21:58:20,726 INFO L158 Benchmark]: TraceAbstraction took 6241.94ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 134.7MB in the beginning and 153.9MB in the end (delta: -19.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:20,727 INFO L158 Benchmark]: Witness Printer took 71.74ms. Allocated memory is still 211.8MB. Free memory was 153.9MB in the beginning and 150.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:58:20,729 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 95.2MB in the beginning and 95.1MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 714.49ms. Allocated memory is still 176.2MB. Free memory was 146.4MB in the beginning and 125.9MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.13ms. Allocated memory is still 176.2MB. Free memory was 125.9MB in the beginning and 123.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.25ms. Allocated memory is still 176.2MB. Free memory was 123.7MB in the beginning and 121.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 568.73ms. Allocated memory is still 176.2MB. Free memory was 121.8MB in the beginning and 134.7MB in the end (delta: -13.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6241.94ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 134.7MB in the beginning and 153.9MB in the end (delta: -19.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Witness Printer took 71.74ms. Allocated memory is still 211.8MB. Free memory was 153.9MB in the beginning and 150.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 18 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 TotalNumberOfCompositions, 2081 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1214, independent: 1134, independent conditional: 0, independent unconditional: 1134, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 600, independent: 575, independent conditional: 0, independent unconditional: 575, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1214, independent: 559, independent conditional: 0, independent unconditional: 559, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 600, unknown conditional: 0, unknown unconditional: 600] , Statistics on independence cache: Total cache size (in pairs): 56, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 378 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 33 mSDtfsCounter, 378 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 377 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:58:20,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad49d45d-dd32-404b-9e87-1ceeb2d5c860/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE