./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix030_power.oepc_pso.oepc_rmo.oepc.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 a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:26:43,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:26:43,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:26:43,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:26:43,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:26:43,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:26:43,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:26:43,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:26:43,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:26:43,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:26:43,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:26:43,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:26:43,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:26:43,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:26:43,290 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:26:43,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:26:43,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:26:43,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:26:43,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:26:43,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:26:43,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:26:43,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:26:43,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:26:43,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:26:43,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:26:43,293 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:26:43,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:26:43,293 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:26:43,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:26:43,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:26:43,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:26:43,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:26:43,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:26:43,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:26:43,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:26:43,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:26:43,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:26:43,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:26:43,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:26:43,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:26:43,296 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:26:43,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:26:43,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:26:43,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e [2024-06-27 17:26:43,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:26:43,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:26:43,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:26:43,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:26:43,566 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:26:43,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 17:26:44,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:26:44,945 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:26:44,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 17:26:44,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72f43647/406595738ab5484e8e4372244261e9f4/FLAG0d10c1627 [2024-06-27 17:26:44,992 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72f43647/406595738ab5484e8e4372244261e9f4 [2024-06-27 17:26:44,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:26:44,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:26:44,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:26:45,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:26:45,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:26:45,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:26:44" (1/1) ... [2024-06-27 17:26:45,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1192d325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45, skipping insertion in model container [2024-06-27 17:26:45,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:26:44" (1/1) ... [2024-06-27 17:26:45,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:26:45,166 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 17:26:45,376 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:26:45,384 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:26:45,393 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 17:26:45,494 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:26:45,535 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:26:45,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45 WrapperNode [2024-06-27 17:26:45,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:26:45,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:26:45,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:26:45,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:26:45,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,607 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2024-06-27 17:26:45,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:26:45,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:26:45,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:26:45,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:26:45,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,655 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 17:26:45,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:26:45,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:26:45,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:26:45,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:26:45,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (1/1) ... [2024-06-27 17:26:45,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:26:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:26:45,715 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) [2024-06-27 17:26:45,734 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 [2024-06-27 17:26:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:26:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:26:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:26:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:26:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:26:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:26:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 17:26:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 17:26:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 17:26:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 17:26:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:26:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:26:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:26:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:26:45,760 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:26:45,854 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:26:45,856 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:26:46,125 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:26:46,126 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:26:46,278 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:26:46,279 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:26:46,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:26:46 BoogieIcfgContainer [2024-06-27 17:26:46,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:26:46,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:26:46,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:26:46,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:26:46,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:26:44" (1/3) ... [2024-06-27 17:26:46,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd3a017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:26:46, skipping insertion in model container [2024-06-27 17:26:46,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:45" (2/3) ... [2024-06-27 17:26:46,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd3a017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:26:46, skipping insertion in model container [2024-06-27 17:26:46,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:26:46" (3/3) ... [2024-06-27 17:26:46,289 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 17:26:46,296 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:26:46,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:26:46,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 17:26:46,303 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:26:46,357 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:26:46,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-06-27 17:26:46,446 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 17:26:46,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:26:46,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-06-27 17:26:46,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-06-27 17:26:46,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-06-27 17:26:46,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:26:46,471 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;@2c9f885c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:26:46,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 17:26:46,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:26:46,474 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 17:26:46,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:26:46,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:46,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-06-27 17:26:46,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:46,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 11779414, now seen corresponding path program 1 times [2024-06-27 17:26:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:46,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050441191] [2024-06-27 17:26:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:46,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050441191] [2024-06-27 17:26:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050441191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:46,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:26:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247540592] [2024-06-27 17:26:46,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:26:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:46,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:26:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:26:46,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-06-27 17:26:46,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-06-27 17:26:46,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:46,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-06-27 17:26:46,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:47,550 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2024-06-27 17:26:47,551 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 17:26:47,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 4136 events. 2495/4136 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28686 event pairs, 443 based on Foata normal form. 135/4196 useless extension candidates. Maximal degree in co-relation 7700. Up to 2779 conditions per place. [2024-06-27 17:26:47,578 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2024-06-27 17:26:47,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-06-27 17:26:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:26:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:26:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 17:26:47,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-27 17:26:47,590 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2024-06-27 17:26:47,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-06-27 17:26:47,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:26:47,596 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-06-27 17:26:47,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-27 17:26:47,600 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-06-27 17:26:47,600 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-06-27 17:26:47,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-06-27 17:26:47,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:47,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:26:47,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:47,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1702071975, now seen corresponding path program 1 times [2024-06-27 17:26:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:47,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435286396] [2024-06-27 17:26:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:47,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:47,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435286396] [2024-06-27 17:26:47,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435286396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:47,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:47,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:26:47,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944450416] [2024-06-27 17:26:47,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:47,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:47,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:47,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 17:26:47,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-27 17:26:47,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:47,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 17:26:47,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:53,502 INFO L124 PetriNetUnfolderBase]: 46586/65409 cut-off events. [2024-06-27 17:26:53,502 INFO L125 PetriNetUnfolderBase]: For 2941/2941 co-relation queries the response was YES. [2024-06-27 17:26:53,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130825 conditions, 65409 events. 46586/65409 cut-off events. For 2941/2941 co-relation queries the response was YES. Maximal size of possible extension queue 2616. Compared 460682 event pairs, 11312 based on Foata normal form. 0/63905 useless extension candidates. Maximal degree in co-relation 130815. Up to 20650 conditions per place. [2024-06-27 17:26:53,832 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 48 selfloop transitions, 9 changer transitions 109/176 dead transitions. [2024-06-27 17:26:53,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 176 transitions, 714 flow [2024-06-27 17:26:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:26:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:26:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2024-06-27 17:26:53,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 17:26:53,836 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 294 transitions. [2024-06-27 17:26:53,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 176 transitions, 714 flow [2024-06-27 17:26:53,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 176 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:26:53,840 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 216 flow [2024-06-27 17:26:53,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-06-27 17:26:53,841 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-27 17:26:53,842 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 216 flow [2024-06-27 17:26:53,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-27 17:26:53,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:53,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:53,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:26:53,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:53,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:53,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1518495034, now seen corresponding path program 1 times [2024-06-27 17:26:53,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316800824] [2024-06-27 17:26:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316800824] [2024-06-27 17:26:54,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316800824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:54,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:54,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723937214] [2024-06-27 17:26:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:54,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:54,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:54,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:54,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 17:26:54,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-27 17:26:54,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:54,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 17:26:54,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:58,432 INFO L124 PetriNetUnfolderBase]: 35452/50693 cut-off events. [2024-06-27 17:26:58,432 INFO L125 PetriNetUnfolderBase]: For 81560/81576 co-relation queries the response was YES. [2024-06-27 17:26:58,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156890 conditions, 50693 events. 35452/50693 cut-off events. For 81560/81576 co-relation queries the response was YES. Maximal size of possible extension queue 2073. Compared 357638 event pairs, 4260 based on Foata normal form. 1325/51979 useless extension candidates. Maximal degree in co-relation 156872. Up to 18817 conditions per place. [2024-06-27 17:26:58,806 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 68 selfloop transitions, 13 changer transitions 108/199 dead transitions. [2024-06-27 17:26:58,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 199 transitions, 1350 flow [2024-06-27 17:26:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:26:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:26:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-06-27 17:26:58,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6387755102040816 [2024-06-27 17:26:58,811 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 216 flow. Second operand 10 states and 313 transitions. [2024-06-27 17:26:58,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 199 transitions, 1350 flow [2024-06-27 17:26:59,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 199 transitions, 1172 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 17:26:59,259 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 334 flow [2024-06-27 17:26:59,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=334, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-27 17:26:59,260 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-06-27 17:26:59,260 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 334 flow [2024-06-27 17:26:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-27 17:26:59,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:59,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:59,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:26:59,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:59,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1695811066, now seen corresponding path program 1 times [2024-06-27 17:26:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:59,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762696483] [2024-06-27 17:26:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:59,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:59,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762696483] [2024-06-27 17:26:59,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762696483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:59,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:59,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:59,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554270876] [2024-06-27 17:26:59,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:59,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:59,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:59,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 17:26:59,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-27 17:26:59,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:59,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 17:26:59,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:04,744 INFO L124 PetriNetUnfolderBase]: 33228/47714 cut-off events. [2024-06-27 17:27:04,744 INFO L125 PetriNetUnfolderBase]: For 142706/142711 co-relation queries the response was YES. [2024-06-27 17:27:04,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162771 conditions, 47714 events. 33228/47714 cut-off events. For 142706/142711 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 334355 event pairs, 6478 based on Foata normal form. 1098/48775 useless extension candidates. Maximal degree in co-relation 162746. Up to 18240 conditions per place. [2024-06-27 17:27:05,102 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 74 selfloop transitions, 22 changer transitions 100/206 dead transitions. [2024-06-27 17:27:05,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 206 transitions, 1504 flow [2024-06-27 17:27:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:27:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:27:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-06-27 17:27:05,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346938775510204 [2024-06-27 17:27:05,104 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 334 flow. Second operand 10 states and 311 transitions. [2024-06-27 17:27:05,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 206 transitions, 1504 flow [2024-06-27 17:27:05,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 206 transitions, 1476 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-06-27 17:27:05,675 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 570 flow [2024-06-27 17:27:05,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=570, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2024-06-27 17:27:05,675 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-06-27 17:27:05,676 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 570 flow [2024-06-27 17:27:05,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-27 17:27:05,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:05,676 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] [2024-06-27 17:27:05,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:27:05,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:05,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash 714819297, now seen corresponding path program 1 times [2024-06-27 17:27:05,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:05,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174007365] [2024-06-27 17:27:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:27:05,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:05,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174007365] [2024-06-27 17:27:05,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174007365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:05,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:05,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:27:05,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154304198] [2024-06-27 17:27:05,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:05,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:27:05,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:05,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:27:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:27:05,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-06-27 17:27:05,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 570 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-06-27 17:27:05,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:05,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-06-27 17:27:05,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:10,062 INFO L124 PetriNetUnfolderBase]: 25390/39381 cut-off events. [2024-06-27 17:27:10,062 INFO L125 PetriNetUnfolderBase]: For 162172/166465 co-relation queries the response was YES. [2024-06-27 17:27:10,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136567 conditions, 39381 events. 25390/39381 cut-off events. For 162172/166465 co-relation queries the response was YES. Maximal size of possible extension queue 1909. Compared 315872 event pairs, 6120 based on Foata normal form. 2008/40777 useless extension candidates. Maximal degree in co-relation 136531. Up to 25426 conditions per place. [2024-06-27 17:27:10,504 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 42 selfloop transitions, 8 changer transitions 51/136 dead transitions. [2024-06-27 17:27:10,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 136 transitions, 1140 flow [2024-06-27 17:27:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:27:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:27:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 17:27:10,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239067055393586 [2024-06-27 17:27:10,508 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 570 flow. Second operand 7 states and 214 transitions. [2024-06-27 17:27:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 136 transitions, 1140 flow [2024-06-27 17:27:11,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 136 transitions, 1088 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 17:27:11,935 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 640 flow [2024-06-27 17:27:11,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-06-27 17:27:11,936 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-06-27 17:27:11,936 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 640 flow [2024-06-27 17:27:11,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-06-27 17:27:11,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:11,936 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] [2024-06-27 17:27:11,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:27:11,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:11,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash -799236572, now seen corresponding path program 1 times [2024-06-27 17:27:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296312058] [2024-06-27 17:27:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:27:12,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296312058] [2024-06-27 17:27:12,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296312058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:12,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:12,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:27:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285281022] [2024-06-27 17:27:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:12,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:27:12,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:27:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:27:12,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 17:27:12,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 17:27:12,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:12,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 17:27:12,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:19,281 INFO L124 PetriNetUnfolderBase]: 43668/62976 cut-off events. [2024-06-27 17:27:19,282 INFO L125 PetriNetUnfolderBase]: For 320869/320869 co-relation queries the response was YES. [2024-06-27 17:27:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242958 conditions, 62976 events. 43668/62976 cut-off events. For 320869/320869 co-relation queries the response was YES. Maximal size of possible extension queue 2646. Compared 470581 event pairs, 7297 based on Foata normal form. 1215/64173 useless extension candidates. Maximal degree in co-relation 242919. Up to 21340 conditions per place. [2024-06-27 17:27:19,937 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 79 selfloop transitions, 32 changer transitions 95/216 dead transitions. [2024-06-27 17:27:19,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 216 transitions, 1926 flow [2024-06-27 17:27:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:27:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:27:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2024-06-27 17:27:19,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-27 17:27:19,940 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 640 flow. Second operand 10 states and 308 transitions. [2024-06-27 17:27:19,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 216 transitions, 1926 flow [2024-06-27 17:27:20,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 216 transitions, 1868 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 17:27:20,601 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 858 flow [2024-06-27 17:27:20,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=858, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-27 17:27:20,604 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-06-27 17:27:20,604 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 858 flow [2024-06-27 17:27:20,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 17:27:20,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:20,605 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] [2024-06-27 17:27:20,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:27:20,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:20,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -497933468, now seen corresponding path program 1 times [2024-06-27 17:27:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864826768] [2024-06-27 17:27:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:27:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864826768] [2024-06-27 17:27:20,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864826768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:20,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:20,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:27:20,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478143599] [2024-06-27 17:27:20,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:20,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:27:20,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:20,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:27:20,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:27:20,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 17:27:20,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 858 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 17:27:20,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:20,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 17:27:20,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand