./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 63f865703c59d821a54141355edec3427193a51b37abbaa1f96833fe96db9b5e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:25:09,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:25:09,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:25:09,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:25:09,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:25:09,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:25:09,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:25:09,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:25:09,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:25:09,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:25:09,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:25:09,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:25:09,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:25:09,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:25:09,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:25:09,461 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:25:09,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:25:09,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:25:09,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:25:09,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:25:09,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:25:09,462 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 63f865703c59d821a54141355edec3427193a51b37abbaa1f96833fe96db9b5e [2025-02-06 04:25:09,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:25:09,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:25:09,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:25:09,662 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:25:09,663 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:25:09,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i [2025-02-06 04:25:10,741 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f15d314b0/61c335ddfabc43bbb913aaed908bbdee/FLAG80688b07f [2025-02-06 04:25:11,012 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:25:11,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i [2025-02-06 04:25:11,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f15d314b0/61c335ddfabc43bbb913aaed908bbdee/FLAG80688b07f [2025-02-06 04:25:11,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f15d314b0/61c335ddfabc43bbb913aaed908bbdee [2025-02-06 04:25:11,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:25:11,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:25:11,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:25:11,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:25:11,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:25:11,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@758f4670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11, skipping insertion in model container [2025-02-06 04:25:11,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:25:11,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i[993,1006] [2025-02-06 04:25:11,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:25:11,644 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:25:11,660 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i[993,1006] [2025-02-06 04:25:11,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:25:11,741 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:25:11,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11 WrapperNode [2025-02-06 04:25:11,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:25:11,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:25:11,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:25:11,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:25:11,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,774 INFO L138 Inliner]: procedures = 176, calls = 69, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 171 [2025-02-06 04:25:11,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:25:11,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:25:11,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:25:11,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:25:11,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,784 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,795 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2025-02-06 04:25:11,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,801 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:25:11,806 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:25:11,806 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:25:11,806 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:25:11,807 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (1/1) ... [2025-02-06 04:25:11,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:25:11,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:25:11,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:25:11,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:25:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:25:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:25:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:25:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:25:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:25:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:25:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 04:25:11,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 04:25:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 04:25:11,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 04:25:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 04:25:11,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 04:25:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 04:25:11,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 04:25:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:25:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:25:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:25:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:25:11,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:25:11,853 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:25:11,977 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:25:11,978 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:25:12,328 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:25:12,328 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:25:12,610 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:25:12,610 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:25:12,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:25:12 BoogieIcfgContainer [2025-02-06 04:25:12,611 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:25:12,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:25:12,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:25:12,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:25:12,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:25:11" (1/3) ... [2025-02-06 04:25:12,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffe4c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:25:12, skipping insertion in model container [2025-02-06 04:25:12,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:11" (2/3) ... [2025-02-06 04:25:12,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffe4c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:25:12, skipping insertion in model container [2025-02-06 04:25:12,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:25:12" (3/3) ... [2025-02-06 04:25:12,619 INFO L128 eAbstractionObserver]: Analyzing ICFG safe019_rmo.oepc.i [2025-02-06 04:25:12,629 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:25:12,631 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe019_rmo.oepc.i that has 5 procedures, 45 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 04:25:12,631 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:25:12,687 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:25:12,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2025-02-06 04:25:12,736 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2025-02-06 04:25:12,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:25:12,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-06 04:25:12,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2025-02-06 04:25:12,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2025-02-06 04:25:12,746 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:25:12,752 INFO L333 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, 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;@35953bac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:25:12,753 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 04:25:12,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:25:12,762 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-02-06 04:25:12,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:25:12,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:12,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:25:12,763 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:12,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash -680697502, now seen corresponding path program 1 times [2025-02-06 04:25:12,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:12,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908699127] [2025-02-06 04:25:12,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:12,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:25:12,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:25:12,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:12,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:13,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908699127] [2025-02-06 04:25:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908699127] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:13,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:25:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856912825] [2025-02-06 04:25:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:13,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:25:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:13,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:25:13,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:25:13,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-06 04:25:13,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-02-06 04:25:13,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:13,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-06 04:25:13,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:16,575 INFO L124 PetriNetUnfolderBase]: 27202/36947 cut-off events. [2025-02-06 04:25:16,575 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-02-06 04:25:16,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73572 conditions, 36947 events. 27202/36947 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 222445 event pairs, 3582 based on Foata normal form. 900/37842 useless extension candidates. Maximal degree in co-relation 73560. Up to 26651 conditions per place. [2025-02-06 04:25:16,793 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 54 selfloop transitions, 2 changer transitions 65/126 dead transitions. [2025-02-06 04:25:16,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 126 transitions, 515 flow [2025-02-06 04:25:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:25:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:25:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-02-06 04:25:16,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-02-06 04:25:16,803 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 186 transitions. [2025-02-06 04:25:16,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 126 transitions, 515 flow [2025-02-06 04:25:16,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 126 transitions, 508 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:25:16,818 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 100 flow [2025-02-06 04:25:16,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2025-02-06 04:25:16,826 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2025-02-06 04:25:16,826 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 100 flow [2025-02-06 04:25:16,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-02-06 04:25:16,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:16,827 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:25:16,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:25:16,827 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:16,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash -453499549, now seen corresponding path program 1 times [2025-02-06 04:25:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:16,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645164377] [2025-02-06 04:25:16,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:16,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:16,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:25:16,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:25:16,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:16,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:17,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:17,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645164377] [2025-02-06 04:25:17,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645164377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:17,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:17,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:25:17,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138448777] [2025-02-06 04:25:17,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:17,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:25:17,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:17,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:25:17,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:25:17,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-06 04:25:17,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:25:17,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:17,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-06 04:25:17,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:19,602 INFO L124 PetriNetUnfolderBase]: 25022/33990 cut-off events. [2025-02-06 04:25:19,603 INFO L125 PetriNetUnfolderBase]: For 5472/5472 co-relation queries the response was YES. [2025-02-06 04:25:19,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74157 conditions, 33990 events. 25022/33990 cut-off events. For 5472/5472 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 196053 event pairs, 3382 based on Foata normal form. 750/34719 useless extension candidates. Maximal degree in co-relation 74142. Up to 24841 conditions per place. [2025-02-06 04:25:19,791 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 50 selfloop transitions, 2 changer transitions 61/118 dead transitions. [2025-02-06 04:25:19,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 118 transitions, 501 flow [2025-02-06 04:25:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:25:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:25:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2025-02-06 04:25:19,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2025-02-06 04:25:19,793 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 100 flow. Second operand 7 states and 178 transitions. [2025-02-06 04:25:19,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 118 transitions, 501 flow [2025-02-06 04:25:20,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 118 transitions, 479 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-06 04:25:20,400 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 104 flow [2025-02-06 04:25:20,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2025-02-06 04:25:20,400 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2025-02-06 04:25:20,401 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 104 flow [2025-02-06 04:25:20,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:25:20,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:20,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:25:20,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:25:20,401 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:20,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1966370436, now seen corresponding path program 1 times [2025-02-06 04:25:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742533806] [2025-02-06 04:25:20,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:20,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 04:25:20,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:25:20,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:20,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:20,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742533806] [2025-02-06 04:25:20,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742533806] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:20,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:20,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:25:20,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845762754] [2025-02-06 04:25:20,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:20,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:25:20,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:20,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:25:20,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:25:20,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-06 04:25:20,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-02-06 04:25:20,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:20,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-06 04:25:20,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:24,204 INFO L124 PetriNetUnfolderBase]: 33044/44486 cut-off events. [2025-02-06 04:25:24,204 INFO L125 PetriNetUnfolderBase]: For 6075/6075 co-relation queries the response was YES. [2025-02-06 04:25:24,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97619 conditions, 44486 events. 33044/44486 cut-off events. For 6075/6075 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 259743 event pairs, 3381 based on Foata normal form. 625/45105 useless extension candidates. Maximal degree in co-relation 97603. Up to 19636 conditions per place. [2025-02-06 04:25:24,385 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 65 selfloop transitions, 3 changer transitions 69/142 dead transitions. [2025-02-06 04:25:24,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 142 transitions, 613 flow [2025-02-06 04:25:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:25:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:25:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2025-02-06 04:25:24,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2025-02-06 04:25:24,387 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 104 flow. Second operand 8 states and 211 transitions. [2025-02-06 04:25:24,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 142 transitions, 613 flow [2025-02-06 04:25:25,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 142 transitions, 591 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-06 04:25:25,082 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 114 flow [2025-02-06 04:25:25,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=38} [2025-02-06 04:25:25,083 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-02-06 04:25:25,083 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 114 flow [2025-02-06 04:25:25,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-02-06 04:25:25,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:25,083 INFO L206 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] [2025-02-06 04:25:25,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:25:25,083 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:25,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -264976537, now seen corresponding path program 1 times [2025-02-06 04:25:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898486167] [2025-02-06 04:25:25,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:25,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:25:25,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:25:25,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:25,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898486167] [2025-02-06 04:25:25,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898486167] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:25,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:25,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:25:25,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869316191] [2025-02-06 04:25:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:25,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:25:25,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:25,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:25:25,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:25:25,711 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-06 04:25:25,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 114 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) [2025-02-06 04:25:25,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:25,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-06 04:25:25,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:27,745 INFO L124 PetriNetUnfolderBase]: 19234/26330 cut-off events. [2025-02-06 04:25:27,746 INFO L125 PetriNetUnfolderBase]: For 9970/9970 co-relation queries the response was YES. [2025-02-06 04:25:27,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60412 conditions, 26330 events. 19234/26330 cut-off events. For 9970/9970 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 143921 event pairs, 4792 based on Foata normal form. 500/26808 useless extension candidates. Maximal degree in co-relation 60394. Up to 20845 conditions per place. [2025-02-06 04:25:27,870 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 48 selfloop transitions, 3 changer transitions 51/107 dead transitions. [2025-02-06 04:25:27,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 107 transitions, 483 flow [2025-02-06 04:25:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:25:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:25:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2025-02-06 04:25:27,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2025-02-06 04:25:27,872 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 114 flow. Second operand 7 states and 167 transitions. [2025-02-06 04:25:27,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 107 transitions, 483 flow [2025-02-06 04:25:28,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 107 transitions, 446 flow, removed 12 selfloop flow, removed 8 redundant places. [2025-02-06 04:25:28,075 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 129 flow [2025-02-06 04:25:28,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2025-02-06 04:25:28,076 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2025-02-06 04:25:28,076 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 129 flow [2025-02-06 04:25:28,076 INFO L472 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) [2025-02-06 04:25:28,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:28,076 INFO L206 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] [2025-02-06 04:25:28,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:25:28,077 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:28,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1573138608, now seen corresponding path program 1 times [2025-02-06 04:25:28,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:28,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642298616] [2025-02-06 04:25:28,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:28,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:28,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:25:28,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:25:28,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:28,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:28,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:28,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642298616] [2025-02-06 04:25:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642298616] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:28,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:25:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856045367] [2025-02-06 04:25:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:28,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:25:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:28,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:25:28,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:25:28,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-06 04:25:28,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-06 04:25:28,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:28,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-06 04:25:28,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:31,232 INFO L124 PetriNetUnfolderBase]: 21408/29168 cut-off events. [2025-02-06 04:25:31,233 INFO L125 PetriNetUnfolderBase]: For 14312/14312 co-relation queries the response was YES. [2025-02-06 04:25:31,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70589 conditions, 29168 events. 21408/29168 cut-off events. For 14312/14312 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 160272 event pairs, 14978 based on Foata normal form. 400/29546 useless extension candidates. Maximal degree in co-relation 70572. Up to 22549 conditions per place. [2025-02-06 04:25:31,344 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 48 selfloop transitions, 8 changer transitions 30/91 dead transitions. [2025-02-06 04:25:31,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 442 flow [2025-02-06 04:25:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:25:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:25:31,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2025-02-06 04:25:31,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2025-02-06 04:25:31,346 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 129 flow. Second operand 6 states and 139 transitions. [2025-02-06 04:25:31,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 442 flow [2025-02-06 04:25:31,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 91 transitions, 429 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 04:25:31,526 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 178 flow [2025-02-06 04:25:31,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2025-02-06 04:25:31,526 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-02-06 04:25:31,526 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 178 flow [2025-02-06 04:25:31,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-06 04:25:31,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:31,527 INFO L206 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] [2025-02-06 04:25:31,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:25:31,527 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:31,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:31,527 INFO L85 PathProgramCache]: Analyzing trace with hash -77034588, now seen corresponding path program 2 times [2025-02-06 04:25:31,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:31,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798961567] [2025-02-06 04:25:31,527 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:25:31,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:31,537 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:25:31,547 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:25:31,547 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:25:31,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:31,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:31,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798961567] [2025-02-06 04:25:31,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798961567] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:31,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:31,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:25:31,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903482386] [2025-02-06 04:25:31,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:31,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:25:31,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:31,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:25:31,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:25:31,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-06 04:25:31,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-06 04:25:31,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:31,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-06 04:25:31,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:35,518 INFO L124 PetriNetUnfolderBase]: 30439/41323 cut-off events. [2025-02-06 04:25:35,519 INFO L125 PetriNetUnfolderBase]: For 28736/28736 co-relation queries the response was YES. [2025-02-06 04:25:35,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107426 conditions, 41323 events. 30439/41323 cut-off events. For 28736/28736 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 234204 event pairs, 8961 based on Foata normal form. 720/42021 useless extension candidates. Maximal degree in co-relation 107407. Up to 16884 conditions per place. [2025-02-06 04:25:35,686 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 68 selfloop transitions, 10 changer transitions 57/140 dead transitions. [2025-02-06 04:25:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 140 transitions, 716 flow [2025-02-06 04:25:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:25:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:25:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2025-02-06 04:25:35,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5358024691358024 [2025-02-06 04:25:35,688 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 178 flow. Second operand 9 states and 217 transitions. [2025-02-06 04:25:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 140 transitions, 716 flow [2025-02-06 04:25:36,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 140 transitions, 681 flow, removed 13 selfloop flow, removed 4 redundant places. [2025-02-06 04:25:36,181 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 197 flow [2025-02-06 04:25:36,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=197, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2025-02-06 04:25:36,183 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2025-02-06 04:25:36,184 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 197 flow [2025-02-06 04:25:36,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-06 04:25:36,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:36,184 INFO L206 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] [2025-02-06 04:25:36,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:25:36,184 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:36,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1364615130, now seen corresponding path program 1 times [2025-02-06 04:25:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:36,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894365584] [2025-02-06 04:25:36,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:36,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:25:36,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:25:36,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:36,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:36,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894365584] [2025-02-06 04:25:36,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894365584] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:36,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:36,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:25:36,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813754435] [2025-02-06 04:25:36,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:36,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:25:36,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:36,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:25:36,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:25:36,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-02-06 04:25:36,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-02-06 04:25:36,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:36,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-02-06 04:25:36,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:38,866 INFO L124 PetriNetUnfolderBase]: 24245/34401 cut-off events. [2025-02-06 04:25:38,867 INFO L125 PetriNetUnfolderBase]: For 31830/31830 co-relation queries the response was YES. [2025-02-06 04:25:38,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91171 conditions, 34401 events. 24245/34401 cut-off events. For 31830/31830 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 213020 event pairs, 3332 based on Foata normal form. 1246/35636 useless extension candidates. Maximal degree in co-relation 91149. Up to 18402 conditions per place. [2025-02-06 04:25:39,040 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 80 selfloop transitions, 6 changer transitions 5/97 dead transitions. [2025-02-06 04:25:39,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 615 flow [2025-02-06 04:25:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:25:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:25:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-02-06 04:25:39,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2025-02-06 04:25:39,041 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 197 flow. Second operand 4 states and 118 transitions. [2025-02-06 04:25:39,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 615 flow [2025-02-06 04:25:39,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 97 transitions, 575 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-02-06 04:25:39,266 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 219 flow [2025-02-06 04:25:39,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2025-02-06 04:25:39,268 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2025-02-06 04:25:39,268 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 219 flow [2025-02-06 04:25:39,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-02-06 04:25:39,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:39,268 INFO L206 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, 1] [2025-02-06 04:25:39,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:25:39,268 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:25:39,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:39,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2043203597, now seen corresponding path program 1 times [2025-02-06 04:25:39,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:39,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101731304] [2025-02-06 04:25:39,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:39,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:39,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:25:39,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:25:39,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:39,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101731304] [2025-02-06 04:25:39,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101731304] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:39,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:39,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:25:39,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756256826] [2025-02-06 04:25:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:39,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:25:39,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:39,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:25:39,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:25:39,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-02-06 04:25:39,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2025-02-06 04:25:39,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:39,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-02-06 04:25:39,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand