./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:10:08,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:10:08,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:10:08,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:10:08,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:10:08,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:10:08,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:10:08,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:10:08,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:10:08,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:10:08,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:10:08,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:10:08,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:10:08,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:10:08,212 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:10:08,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:10:08,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:10:08,213 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:10:08,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:10:08,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:10:08,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:10:08,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:10:08,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:10:08,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:10:08,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:10:08,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:10:08,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:10:08,217 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:10:08,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:10:08,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:10:08,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:10:08,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:10:08,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:08,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:10:08,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:10:08,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:10:08,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:10:08,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:10:08,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:10:08,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:10:08,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:10:08,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:10:08,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:10:08,235 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2024-01-27 15:10:08,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:10:08,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:10:08,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:10:08,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:10:08,536 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:10:08,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-01-27 15:10:09,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:10:09,928 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:10:09,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-01-27 15:10:09,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417d68a3e/d98115f30037435a84d934c5f21f9431/FLAG3d439de3c [2024-01-27 15:10:09,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417d68a3e/d98115f30037435a84d934c5f21f9431 [2024-01-27 15:10:09,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:10:09,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:10:09,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:09,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:10:09,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:10:09,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:09" (1/1) ... [2024-01-27 15:10:09,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5ef8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:09, skipping insertion in model container [2024-01-27 15:10:09,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:09" (1/1) ... [2024-01-27 15:10:10,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:10:10,184 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i[944,957] [2024-01-27 15:10:10,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:10,458 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:10:10,470 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i[944,957] [2024-01-27 15:10:10,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:10,561 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:10:10,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10 WrapperNode [2024-01-27 15:10:10,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:10,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:10,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:10:10,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:10:10,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,653 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2024-01-27 15:10:10,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:10,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:10:10,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:10:10,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:10:10,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,714 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 15:10:10,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:10:10,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:10:10,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:10:10,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:10:10,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (1/1) ... [2024-01-27 15:10:10,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:10,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:10:10,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:10:10,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:10:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:10:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:10:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:10:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:10:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:10:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:10:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:10:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 15:10:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 15:10:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 15:10:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 15:10:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:10:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:10:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:10:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:10:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:10:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:10:10,862 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:10:11,002 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:10:11,004 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:10:11,325 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:10:11,325 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:10:11,507 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:10:11,507 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:10:11,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:11 BoogieIcfgContainer [2024-01-27 15:10:11,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:10:11,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:10:11,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:10:11,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:10:11,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:10:09" (1/3) ... [2024-01-27 15:10:11,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad80c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:11, skipping insertion in model container [2024-01-27 15:10:11,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:10" (2/3) ... [2024-01-27 15:10:11,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad80c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:11, skipping insertion in model container [2024-01-27 15:10:11,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:11" (3/3) ... [2024-01-27 15:10:11,515 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-01-27 15:10:11,523 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:10:11,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:10:11,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 15:10:11,533 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:10:11,581 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 15:10:11,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2024-01-27 15:10:11,657 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-01-27 15:10:11,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:11,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-01-27 15:10:11,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2024-01-27 15:10:11,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2024-01-27 15:10:11,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:10:11,692 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55b8e207, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:10:11,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:10:11,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:10:11,700 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-01-27 15:10:11,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:11,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:11,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:11,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:11,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:11,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1935163090, now seen corresponding path program 1 times [2024-01-27 15:10:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:11,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795140766] [2024-01-27 15:10:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:11,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:12,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795140766] [2024-01-27 15:10:12,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795140766] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:12,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:12,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 15:10:12,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260925160] [2024-01-27 15:10:12,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:12,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:10:12,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:12,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:10:12,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:10:12,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-01-27 15:10:12,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:12,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:12,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-01-27 15:10:12,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:12,424 INFO L124 PetriNetUnfolderBase]: 249/482 cut-off events. [2024-01-27 15:10:12,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:12,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 482 events. 249/482 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2417 event pairs, 24 based on Foata normal form. 24/495 useless extension candidates. Maximal degree in co-relation 912. Up to 366 conditions per place. [2024-01-27 15:10:12,430 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 23 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2024-01-27 15:10:12,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 136 flow [2024-01-27 15:10:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:10:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:10:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-01-27 15:10:12,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-01-27 15:10:12,445 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 69 transitions. [2024-01-27 15:10:12,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 136 flow [2024-01-27 15:10:12,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:12,451 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2024-01-27 15:10:12,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-01-27 15:10:12,459 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-01-27 15:10:12,460 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2024-01-27 15:10:12,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:12,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:12,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:12,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:10:12,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:12,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1972624974, now seen corresponding path program 1 times [2024-01-27 15:10:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:12,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307545145] [2024-01-27 15:10:12,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:12,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307545145] [2024-01-27 15:10:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307545145] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:13,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053707765] [2024-01-27 15:10:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:13,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-01-27 15:10:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:13,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:13,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-01-27 15:10:13,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:13,849 INFO L124 PetriNetUnfolderBase]: 485/901 cut-off events. [2024-01-27 15:10:13,850 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-27 15:10:13,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 901 events. 485/901 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4677 event pairs, 137 based on Foata normal form. 0/876 useless extension candidates. Maximal degree in co-relation 1773. Up to 322 conditions per place. [2024-01-27 15:10:13,855 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 26 selfloop transitions, 2 changer transitions 43/78 dead transitions. [2024-01-27 15:10:13,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 78 transitions, 310 flow [2024-01-27 15:10:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:10:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:10:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-01-27 15:10:13,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2024-01-27 15:10:13,858 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 8 states and 145 transitions. [2024-01-27 15:10:13,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 78 transitions, 310 flow [2024-01-27 15:10:13,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:13,860 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 74 flow [2024-01-27 15:10:13,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=74, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2024-01-27 15:10:13,861 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-01-27 15:10:13,861 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 74 flow [2024-01-27 15:10:13,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:13,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:13,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:13,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:10:13,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:13,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 432873488, now seen corresponding path program 1 times [2024-01-27 15:10:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303005471] [2024-01-27 15:10:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:14,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:14,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303005471] [2024-01-27 15:10:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303005471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:14,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:10:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135426134] [2024-01-27 15:10:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:14,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:10:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:14,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:10:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:10:14,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:14,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 74 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:14,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:14,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:14,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:14,952 INFO L124 PetriNetUnfolderBase]: 277/545 cut-off events. [2024-01-27 15:10:14,953 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-01-27 15:10:14,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 545 events. 277/545 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2651 event pairs, 143 based on Foata normal form. 15/559 useless extension candidates. Maximal degree in co-relation 1189. Up to 387 conditions per place. [2024-01-27 15:10:14,956 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 31 selfloop transitions, 8 changer transitions 19/66 dead transitions. [2024-01-27 15:10:14,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 283 flow [2024-01-27 15:10:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:10:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:10:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-01-27 15:10:14,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-01-27 15:10:14,959 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 74 flow. Second operand 9 states and 150 transitions. [2024-01-27 15:10:14,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 283 flow [2024-01-27 15:10:14,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 261 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-27 15:10:14,963 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 123 flow [2024-01-27 15:10:14,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=123, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-01-27 15:10:14,964 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-01-27 15:10:14,965 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 123 flow [2024-01-27 15:10:14,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:14,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:14,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:14,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:10:14,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:14,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 955123378, now seen corresponding path program 2 times [2024-01-27 15:10:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646230565] [2024-01-27 15:10:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:15,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:15,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646230565] [2024-01-27 15:10:15,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646230565] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:15,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:15,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:10:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138972960] [2024-01-27 15:10:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:15,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:10:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:10:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:10:15,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:15,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 123 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:15,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:15,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:15,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:16,165 INFO L124 PetriNetUnfolderBase]: 262/518 cut-off events. [2024-01-27 15:10:16,166 INFO L125 PetriNetUnfolderBase]: For 230/233 co-relation queries the response was YES. [2024-01-27 15:10:16,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 518 events. 262/518 cut-off events. For 230/233 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2481 event pairs, 137 based on Foata normal form. 17/534 useless extension candidates. Maximal degree in co-relation 1286. Up to 357 conditions per place. [2024-01-27 15:10:16,169 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 31 selfloop transitions, 12 changer transitions 19/70 dead transitions. [2024-01-27 15:10:16,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 352 flow [2024-01-27 15:10:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:10:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:10:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-01-27 15:10:16,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016835016835017 [2024-01-27 15:10:16,177 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 123 flow. Second operand 9 states and 149 transitions. [2024-01-27 15:10:16,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 352 flow [2024-01-27 15:10:16,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 336 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-27 15:10:16,183 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 186 flow [2024-01-27 15:10:16,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2024-01-27 15:10:16,185 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-01-27 15:10:16,185 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 186 flow [2024-01-27 15:10:16,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:16,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:16,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:16,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:10:16,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:16,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1061557939, now seen corresponding path program 1 times [2024-01-27 15:10:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885467787] [2024-01-27 15:10:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:16,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:16,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885467787] [2024-01-27 15:10:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885467787] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:16,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:10:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888847141] [2024-01-27 15:10:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:16,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:10:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:16,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:10:16,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:10:16,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:16,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:16,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:16,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:16,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:16,541 INFO L124 PetriNetUnfolderBase]: 267/532 cut-off events. [2024-01-27 15:10:16,542 INFO L125 PetriNetUnfolderBase]: For 268/271 co-relation queries the response was YES. [2024-01-27 15:10:16,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 532 events. 267/532 cut-off events. For 268/271 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2364 event pairs, 70 based on Foata normal form. 42/563 useless extension candidates. Maximal degree in co-relation 1323. Up to 220 conditions per place. [2024-01-27 15:10:16,547 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-01-27 15:10:16,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 286 flow [2024-01-27 15:10:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:10:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:10:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-01-27 15:10:16,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-01-27 15:10:16,549 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 186 flow. Second operand 4 states and 84 transitions. [2024-01-27 15:10:16,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 286 flow [2024-01-27 15:10:16,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 240 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-01-27 15:10:16,553 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 126 flow [2024-01-27 15:10:16,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-01-27 15:10:16,555 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-01-27 15:10:16,555 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 126 flow [2024-01-27 15:10:16,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:16,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:16,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:16,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:10:16,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:16,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash 849452428, now seen corresponding path program 1 times [2024-01-27 15:10:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:16,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068878006] [2024-01-27 15:10:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:17,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068878006] [2024-01-27 15:10:17,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068878006] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:17,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:17,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:10:17,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182582028] [2024-01-27 15:10:17,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:17,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:10:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:10:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:10:17,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:17,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 126 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:17,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:17,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:17,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:17,849 INFO L124 PetriNetUnfolderBase]: 303/660 cut-off events. [2024-01-27 15:10:17,849 INFO L125 PetriNetUnfolderBase]: For 295/326 co-relation queries the response was YES. [2024-01-27 15:10:17,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 660 events. 303/660 cut-off events. For 295/326 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3523 event pairs, 63 based on Foata normal form. 11/647 useless extension candidates. Maximal degree in co-relation 1642. Up to 281 conditions per place. [2024-01-27 15:10:17,853 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 38 selfloop transitions, 19 changer transitions 13/81 dead transitions. [2024-01-27 15:10:17,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 415 flow [2024-01-27 15:10:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:10:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:10:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-01-27 15:10:17,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-01-27 15:10:17,855 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 126 flow. Second operand 9 states and 159 transitions. [2024-01-27 15:10:17,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 415 flow [2024-01-27 15:10:17,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:10:17,858 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 261 flow [2024-01-27 15:10:17,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=261, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-01-27 15:10:17,859 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-01-27 15:10:17,859 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 261 flow [2024-01-27 15:10:17,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:17,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:17,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:17,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:10:17,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:17,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1022590120, now seen corresponding path program 2 times [2024-01-27 15:10:17,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:17,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768816292] [2024-01-27 15:10:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:17,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:18,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:18,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768816292] [2024-01-27 15:10:18,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768816292] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:19,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:19,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:10:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27495266] [2024-01-27 15:10:19,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:10:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:10:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:10:19,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:19,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 261 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:19,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:19,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:19,668 INFO L124 PetriNetUnfolderBase]: 490/1106 cut-off events. [2024-01-27 15:10:19,668 INFO L125 PetriNetUnfolderBase]: For 1206/1246 co-relation queries the response was YES. [2024-01-27 15:10:19,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3378 conditions, 1106 events. 490/1106 cut-off events. For 1206/1246 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7087 event pairs, 200 based on Foata normal form. 16/1083 useless extension candidates. Maximal degree in co-relation 3354. Up to 422 conditions per place. [2024-01-27 15:10:19,677 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 64 selfloop transitions, 20 changer transitions 13/108 dead transitions. [2024-01-27 15:10:19,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 721 flow [2024-01-27 15:10:19,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:10:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:10:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-01-27 15:10:19,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316804407713499 [2024-01-27 15:10:19,679 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 261 flow. Second operand 11 states and 193 transitions. [2024-01-27 15:10:19,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 721 flow [2024-01-27 15:10:19,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 693 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:19,689 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 406 flow [2024-01-27 15:10:19,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=406, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-01-27 15:10:19,690 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-01-27 15:10:19,691 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 406 flow [2024-01-27 15:10:19,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:19,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:19,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:19,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:10:19,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:19,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:19,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1133440854, now seen corresponding path program 3 times [2024-01-27 15:10:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:19,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212794391] [2024-01-27 15:10:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:19,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:19,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:19,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212794391] [2024-01-27 15:10:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212794391] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:19,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:19,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:10:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825384618] [2024-01-27 15:10:19,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:10:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:10:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:10:19,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:19,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:19,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:19,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:19,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:20,078 INFO L124 PetriNetUnfolderBase]: 447/907 cut-off events. [2024-01-27 15:10:20,078 INFO L125 PetriNetUnfolderBase]: For 1503/1510 co-relation queries the response was YES. [2024-01-27 15:10:20,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3079 conditions, 907 events. 447/907 cut-off events. For 1503/1510 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4917 event pairs, 112 based on Foata normal form. 65/958 useless extension candidates. Maximal degree in co-relation 3049. Up to 389 conditions per place. [2024-01-27 15:10:20,084 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 47 selfloop transitions, 6 changer transitions 13/77 dead transitions. [2024-01-27 15:10:20,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 608 flow [2024-01-27 15:10:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:10:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:10:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-01-27 15:10:20,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-01-27 15:10:20,088 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 406 flow. Second operand 5 states and 90 transitions. [2024-01-27 15:10:20,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 608 flow [2024-01-27 15:10:20,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 545 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-01-27 15:10:20,097 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 303 flow [2024-01-27 15:10:20,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2024-01-27 15:10:20,100 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2024-01-27 15:10:20,100 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 303 flow [2024-01-27 15:10:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:20,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:20,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:20,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:10:20,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:20,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:20,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1961086254, now seen corresponding path program 1 times [2024-01-27 15:10:20,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:20,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929722806] [2024-01-27 15:10:20,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:20,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:20,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929722806] [2024-01-27 15:10:20,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929722806] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:20,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:20,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550688930] [2024-01-27 15:10:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:20,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-01-27 15:10:20,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:20,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:20,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-01-27 15:10:20,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:20,503 INFO L124 PetriNetUnfolderBase]: 228/505 cut-off events. [2024-01-27 15:10:20,504 INFO L125 PetriNetUnfolderBase]: For 624/626 co-relation queries the response was YES. [2024-01-27 15:10:20,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1568 conditions, 505 events. 228/505 cut-off events. For 624/626 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2335 event pairs, 46 based on Foata normal form. 10/502 useless extension candidates. Maximal degree in co-relation 1540. Up to 194 conditions per place. [2024-01-27 15:10:20,507 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 24 selfloop transitions, 1 changer transitions 41/75 dead transitions. [2024-01-27 15:10:20,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 534 flow [2024-01-27 15:10:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:10:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:10:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-01-27 15:10:20,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-01-27 15:10:20,509 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 303 flow. Second operand 6 states and 94 transitions. [2024-01-27 15:10:20,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 534 flow [2024-01-27 15:10:20,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 485 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-01-27 15:10:20,513 INFO L231 Difference]: Finished difference. Result has 68 places, 33 transitions, 143 flow [2024-01-27 15:10:20,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=68, PETRI_TRANSITIONS=33} [2024-01-27 15:10:20,514 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2024-01-27 15:10:20,514 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 33 transitions, 143 flow [2024-01-27 15:10:20,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:20,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:20,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:10:20,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:20,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash 460642896, now seen corresponding path program 2 times [2024-01-27 15:10:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:20,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750553274] [2024-01-27 15:10:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:20,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:21,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:21,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750553274] [2024-01-27 15:10:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750553274] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:21,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:21,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:10:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093354054] [2024-01-27 15:10:21,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:21,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:10:21,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:21,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:10:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:10:21,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:21,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 33 transitions, 143 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:21,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:21,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:21,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:22,099 INFO L124 PetriNetUnfolderBase]: 91/233 cut-off events. [2024-01-27 15:10:22,099 INFO L125 PetriNetUnfolderBase]: For 120/124 co-relation queries the response was YES. [2024-01-27 15:10:22,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 233 events. 91/233 cut-off events. For 120/124 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 800 event pairs, 20 based on Foata normal form. 4/229 useless extension candidates. Maximal degree in co-relation 603. Up to 80 conditions per place. [2024-01-27 15:10:22,101 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 20 selfloop transitions, 7 changer transitions 15/52 dead transitions. [2024-01-27 15:10:22,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 279 flow [2024-01-27 15:10:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:10:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:10:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-01-27 15:10:22,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-01-27 15:10:22,103 INFO L175 Difference]: Start difference. First operand has 68 places, 33 transitions, 143 flow. Second operand 10 states and 143 transitions. [2024-01-27 15:10:22,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 279 flow [2024-01-27 15:10:22,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 240 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-01-27 15:10:22,106 INFO L231 Difference]: Finished difference. Result has 58 places, 32 transitions, 136 flow [2024-01-27 15:10:22,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=32} [2024-01-27 15:10:22,107 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-01-27 15:10:22,108 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 32 transitions, 136 flow [2024-01-27 15:10:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:22,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:22,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:22,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:10:22,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:22,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash 778022718, now seen corresponding path program 3 times [2024-01-27 15:10:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:22,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262208789] [2024-01-27 15:10:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:23,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262208789] [2024-01-27 15:10:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262208789] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:23,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:23,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:10:23,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906112720] [2024-01-27 15:10:23,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:23,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:10:23,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:23,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:10:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:10:23,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:23,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 32 transitions, 136 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:23,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:23,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:23,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:23,722 INFO L124 PetriNetUnfolderBase]: 86/220 cut-off events. [2024-01-27 15:10:23,723 INFO L125 PetriNetUnfolderBase]: For 91/95 co-relation queries the response was YES. [2024-01-27 15:10:23,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 220 events. 86/220 cut-off events. For 91/95 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 724 event pairs, 38 based on Foata normal form. 4/216 useless extension candidates. Maximal degree in co-relation 551. Up to 76 conditions per place. [2024-01-27 15:10:23,724 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 19 selfloop transitions, 4 changer transitions 16/49 dead transitions. [2024-01-27 15:10:23,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 256 flow [2024-01-27 15:10:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:10:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:10:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-01-27 15:10:23,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-01-27 15:10:23,726 INFO L175 Difference]: Start difference. First operand has 58 places, 32 transitions, 136 flow. Second operand 9 states and 130 transitions. [2024-01-27 15:10:23,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 256 flow [2024-01-27 15:10:23,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 221 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-01-27 15:10:23,728 INFO L231 Difference]: Finished difference. Result has 56 places, 29 transitions, 112 flow [2024-01-27 15:10:23,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=112, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2024-01-27 15:10:23,729 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2024-01-27 15:10:23,729 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 29 transitions, 112 flow [2024-01-27 15:10:23,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:23,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:23,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:10:23,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:10:23,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash 747868416, now seen corresponding path program 4 times [2024-01-27 15:10:23,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:23,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405315991] [2024-01-27 15:10:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:25,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:25,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405315991] [2024-01-27 15:10:25,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405315991] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:25,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:25,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-01-27 15:10:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821711312] [2024-01-27 15:10:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:25,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 15:10:25,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 15:10:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-01-27 15:10:25,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-01-27 15:10:25,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 29 transitions, 112 flow. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:25,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:25,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-01-27 15:10:25,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:26,101 INFO L124 PetriNetUnfolderBase]: 46/122 cut-off events. [2024-01-27 15:10:26,101 INFO L125 PetriNetUnfolderBase]: For 47/49 co-relation queries the response was YES. [2024-01-27 15:10:26,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 122 events. 46/122 cut-off events. For 47/49 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 303 event pairs, 4 based on Foata normal form. 5/125 useless extension candidates. Maximal degree in co-relation 313. Up to 35 conditions per place. [2024-01-27 15:10:26,102 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-01-27 15:10:26,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 42 transitions, 204 flow [2024-01-27 15:10:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:10:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:10:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-01-27 15:10:26,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-01-27 15:10:26,104 INFO L175 Difference]: Start difference. First operand has 56 places, 29 transitions, 112 flow. Second operand 11 states and 144 transitions. [2024-01-27 15:10:26,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 42 transitions, 204 flow [2024-01-27 15:10:26,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 180 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-01-27 15:10:26,105 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-01-27 15:10:26,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-01-27 15:10:26,106 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2024-01-27 15:10:26,106 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-01-27 15:10:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:26,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-01-27 15:10:26,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-27 15:10:26,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-27 15:10:26,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-27 15:10:26,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-27 15:10:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:10:26,111 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1] [2024-01-27 15:10:26,116 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:10:26,116 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:10:26,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:10:26 BasicIcfg [2024-01-27 15:10:26,124 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:10:26,125 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:10:26,125 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:10:26,125 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:10:26,125 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:11" (3/4) ... [2024-01-27 15:10:26,127 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:10:26,129 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-01-27 15:10:26,130 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-01-27 15:10:26,136 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 77 nodes and edges [2024-01-27 15:10:26,137 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-01-27 15:10:26,137 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:10:26,137 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:10:26,231 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:10:26,231 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:10:26,231 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:10:26,232 INFO L158 Benchmark]: Toolchain (without parser) took 16261.26ms. Allocated memory was 157.3MB in the beginning and 522.2MB in the end (delta: 364.9MB). Free memory was 117.8MB in the beginning and 473.7MB in the end (delta: -355.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2024-01-27 15:10:26,232 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:10:26,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 590.09ms. Allocated memory is still 157.3MB. Free memory was 117.8MB in the beginning and 91.8MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:26,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.37ms. Allocated memory is still 157.3MB. Free memory was 91.8MB in the beginning and 88.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:26,233 INFO L158 Benchmark]: Boogie Preprocessor took 99.34ms. Allocated memory is still 157.3MB. Free memory was 88.5MB in the beginning and 84.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:26,233 INFO L158 Benchmark]: RCFGBuilder took 753.57ms. Allocated memory is still 157.3MB. Free memory was 84.3MB in the beginning and 72.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:10:26,234 INFO L158 Benchmark]: TraceAbstraction took 14614.58ms. Allocated memory was 157.3MB in the beginning and 522.2MB in the end (delta: 364.9MB). Free memory was 72.5MB in the beginning and 477.9MB in the end (delta: -405.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:10:26,234 INFO L158 Benchmark]: Witness Printer took 106.88ms. Allocated memory is still 522.2MB. Free memory was 477.9MB in the beginning and 473.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:26,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 590.09ms. Allocated memory is still 157.3MB. Free memory was 117.8MB in the beginning and 91.8MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.37ms. Allocated memory is still 157.3MB. Free memory was 91.8MB in the beginning and 88.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.34ms. Allocated memory is still 157.3MB. Free memory was 88.5MB in the beginning and 84.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 753.57ms. Allocated memory is still 157.3MB. Free memory was 84.3MB in the beginning and 72.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14614.58ms. Allocated memory was 157.3MB in the beginning and 522.2MB in the end (delta: 364.9MB). Free memory was 72.5MB in the beginning and 477.9MB in the end (delta: -405.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 106.88ms. Allocated memory is still 522.2MB. Free memory was 477.9MB in the beginning and 473.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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 5 procedures, 53 locations, 5 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: 14.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 435 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 411 mSDsluCounter, 249 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 215 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1993 IncrementalHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 34 mSDtfsCounter, 1993 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=406occurred in iteration=7, InterpolantAutomatonStates: 94, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 2659 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:10:26,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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