./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:22:48,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:22:48,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:22:48,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:22:48,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:22:48,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:22:48,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:22:48,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:22:48,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:22:48,785 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:22:48,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:22:48,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:22:48,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:22:48,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:22:48,786 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:22:48,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:22:48,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:22:48,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:22:48,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:22:48,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:22:48,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:22:48,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:22:48,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:22:48,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:22:48,790 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:22:48,790 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:22:48,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:22:48,791 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:22:48,791 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:22:48,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:22:48,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:22:48,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:22:48,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:22:48,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:22:48,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:22:48,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:22:48,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:22:48,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:22:48,793 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:22:48,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:22:48,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:22:48,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:22:48,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-11-10 10:22:48,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:22:48,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:22:48,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:22:48,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:22:48,983 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:22:48,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-10 10:22:50,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:22:50,560 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:22:50,560 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-10 10:22:50,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594a07bd3/65b11b30a79042a79b5cbcb8540e1e4d/FLAG74d811529 [2024-11-10 10:22:50,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594a07bd3/65b11b30a79042a79b5cbcb8540e1e4d [2024-11-10 10:22:50,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:22:50,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:22:50,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:22:50,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:22:50,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:22:50,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:50" (1/1) ... [2024-11-10 10:22:50,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754f3b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:50, skipping insertion in model container [2024-11-10 10:22:50,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:50" (1/1) ... [2024-11-10 10:22:50,979 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:22:51,155 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-10 10:22:51,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:22:51,339 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:22:51,359 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-10 10:22:51,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:22:51,418 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:22:51,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51 WrapperNode [2024-11-10 10:22:51,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:22:51,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:22:51,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:22:51,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:22:51,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,487 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 116 [2024-11-10 10:22:51,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:22:51,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:22:51,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:22:51,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:22:51,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,522 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-11-10 10:22:51,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,531 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:22:51,543 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:22:51,543 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:22:51,543 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:22:51,543 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (1/1) ... [2024-11-10 10:22:51,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:22:51,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:51,608 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) [2024-11-10 10:22:51,619 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 [2024-11-10 10:22:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-10 10:22:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:22:51,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:22:51,691 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:22:51,847 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:22:51,849 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:22:52,022 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:22:52,022 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:22:52,155 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:22:52,156 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:22:52,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:52 BoogieIcfgContainer [2024-11-10 10:22:52,156 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:22:52,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:22:52,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:22:52,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:22:52,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:22:50" (1/3) ... [2024-11-10 10:22:52,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33eae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:52, skipping insertion in model container [2024-11-10 10:22:52,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:51" (2/3) ... [2024-11-10 10:22:52,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33eae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:52, skipping insertion in model container [2024-11-10 10:22:52,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:52" (3/3) ... [2024-11-10 10:22:52,163 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-10 10:22:52,176 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:22:52,176 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 10:22:52,176 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:22:52,241 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:22:52,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 43 transitions, 90 flow [2024-11-10 10:22:52,350 INFO L124 PetriNetUnfolderBase]: 9/42 cut-off events. [2024-11-10 10:22:52,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:22:52,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 9/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-11-10 10:22:52,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 43 transitions, 90 flow [2024-11-10 10:22:52,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 42 transitions, 87 flow [2024-11-10 10:22:52,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:22:52,383 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;@769d9031, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:22:52,385 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:22:52,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:22:52,396 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-11-10 10:22:52,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:22:52,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:52,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:52,398 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:52,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1840352810, now seen corresponding path program 1 times [2024-11-10 10:22:52,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:52,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371040858] [2024-11-10 10:22:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:52,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:52,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:52,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371040858] [2024-11-10 10:22:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371040858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:22:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755289421] [2024-11-10 10:22:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:52,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:22:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:52,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:22:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:22:52,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:22:52,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 87 flow. Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2024-11-10 10:22:52,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:52,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:22:52,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:52,878 INFO L124 PetriNetUnfolderBase]: 121/280 cut-off events. [2024-11-10 10:22:52,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:22:52,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 280 events. 121/280 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1160 event pairs, 84 based on Foata normal form. 41/304 useless extension candidates. Maximal degree in co-relation 497. Up to 222 conditions per place. [2024-11-10 10:22:52,885 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 24 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2024-11-10 10:22:52,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 121 flow [2024-11-10 10:22:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:22:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:22:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-10 10:22:52,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-10 10:22:52,901 INFO L175 Difference]: Start difference. First operand has 37 places, 42 transitions, 87 flow. Second operand 2 states and 54 transitions. [2024-11-10 10:22:52,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 121 flow [2024-11-10 10:22:52,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:22:52,907 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 72 flow [2024-11-10 10:22:52,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2024-11-10 10:22:52,913 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-11-10 10:22:52,915 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 72 flow [2024-11-10 10:22:52,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2024-11-10 10:22:52,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:52,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:52,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:22:52,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:52,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1840384588, now seen corresponding path program 1 times [2024-11-10 10:22:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:52,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798012677] [2024-11-10 10:22:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798012677] [2024-11-10 10:22:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798012677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:22:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240111985] [2024-11-10 10:22:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:53,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:22:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:22:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:22:53,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:22:53,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-11-10 10:22:53,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:53,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:22:53,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:53,311 INFO L124 PetriNetUnfolderBase]: 224/491 cut-off events. [2024-11-10 10:22:53,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:22:53,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 491 events. 224/491 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2378 event pairs, 15 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 916. Up to 250 conditions per place. [2024-11-10 10:22:53,316 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 49 selfloop transitions, 15 changer transitions 0/73 dead transitions. [2024-11-10 10:22:53,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 73 transitions, 276 flow [2024-11-10 10:22:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:22:53,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:22:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-10 10:22:53,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-10 10:22:53,322 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 72 flow. Second operand 6 states and 126 transitions. [2024-11-10 10:22:53,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 73 transitions, 276 flow [2024-11-10 10:22:53,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 73 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:22:53,326 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 174 flow [2024-11-10 10:22:53,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2024-11-10 10:22:53,327 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-11-10 10:22:53,327 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 174 flow [2024-11-10 10:22:53,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-11-10 10:22:53,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:53,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:53,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:22:53,328 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:53,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1217311932, now seen corresponding path program 1 times [2024-11-10 10:22:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:53,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480632996] [2024-11-10 10:22:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480632996] [2024-11-10 10:22:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480632996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:53,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:53,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:22:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234857217] [2024-11-10 10:22:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:53,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:22:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:22:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:22:53,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:22:53,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-11-10 10:22:53,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:53,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:22:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:53,599 INFO L124 PetriNetUnfolderBase]: 278/595 cut-off events. [2024-11-10 10:22:53,600 INFO L125 PetriNetUnfolderBase]: For 203/205 co-relation queries the response was YES. [2024-11-10 10:22:53,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 595 events. 278/595 cut-off events. For 203/205 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3013 event pairs, 60 based on Foata normal form. 20/611 useless extension candidates. Maximal degree in co-relation 1426. Up to 303 conditions per place. [2024-11-10 10:22:53,603 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 58 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-11-10 10:22:53,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 92 transitions, 480 flow [2024-11-10 10:22:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:22:53,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:22:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-10 10:22:53,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-10 10:22:53,605 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 174 flow. Second operand 6 states and 126 transitions. [2024-11-10 10:22:53,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 92 transitions, 480 flow [2024-11-10 10:22:53,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:22:53,611 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 372 flow [2024-11-10 10:22:53,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2024-11-10 10:22:53,611 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-11-10 10:22:53,612 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 372 flow [2024-11-10 10:22:53,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-11-10 10:22:53,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:53,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:53,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:22:53,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:53,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:53,613 INFO L85 PathProgramCache]: Analyzing trace with hash -448107012, now seen corresponding path program 1 times [2024-11-10 10:22:53,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:53,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935628442] [2024-11-10 10:22:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:53,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:53,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:53,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935628442] [2024-11-10 10:22:53,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935628442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:53,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:53,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:22:53,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140656150] [2024-11-10 10:22:53,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:53,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:22:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:22:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:22:53,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:22:53,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-10 10:22:53,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:53,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:22:53,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:54,107 INFO L124 PetriNetUnfolderBase]: 424/945 cut-off events. [2024-11-10 10:22:54,108 INFO L125 PetriNetUnfolderBase]: For 1286/1303 co-relation queries the response was YES. [2024-11-10 10:22:54,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 945 events. 424/945 cut-off events. For 1286/1303 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5651 event pairs, 107 based on Foata normal form. 16/954 useless extension candidates. Maximal degree in co-relation 2876. Up to 386 conditions per place. [2024-11-10 10:22:54,114 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 91 selfloop transitions, 27 changer transitions 0/132 dead transitions. [2024-11-10 10:22:54,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 132 transitions, 968 flow [2024-11-10 10:22:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:22:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:22:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-11-10 10:22:54,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5647840531561462 [2024-11-10 10:22:54,116 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 372 flow. Second operand 7 states and 170 transitions. [2024-11-10 10:22:54,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 132 transitions, 968 flow [2024-11-10 10:22:54,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 132 transitions, 968 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:22:54,125 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 594 flow [2024-11-10 10:22:54,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2024-11-10 10:22:54,126 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2024-11-10 10:22:54,127 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 594 flow [2024-11-10 10:22:54,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-10 10:22:54,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:54,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:54,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:22:54,127 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:54,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash -483213530, now seen corresponding path program 2 times [2024-11-10 10:22:54,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067873834] [2024-11-10 10:22:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:54,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:54,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:54,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067873834] [2024-11-10 10:22:54,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067873834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:54,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:54,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:22:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940631567] [2024-11-10 10:22:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:54,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:22:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:22:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:22:54,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:22:54,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:22:54,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:54,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:22:54,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:54,765 INFO L124 PetriNetUnfolderBase]: 484/1026 cut-off events. [2024-11-10 10:22:54,766 INFO L125 PetriNetUnfolderBase]: For 2073/2073 co-relation queries the response was YES. [2024-11-10 10:22:54,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 1026 events. 484/1026 cut-off events. For 2073/2073 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5943 event pairs, 129 based on Foata normal form. 1/1019 useless extension candidates. Maximal degree in co-relation 3599. Up to 620 conditions per place. [2024-11-10 10:22:54,773 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 77 selfloop transitions, 67 changer transitions 0/153 dead transitions. [2024-11-10 10:22:54,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 153 transitions, 1404 flow [2024-11-10 10:22:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:22:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:22:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 228 transitions. [2024-11-10 10:22:54,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.407871198568873 [2024-11-10 10:22:54,775 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 594 flow. Second operand 13 states and 228 transitions. [2024-11-10 10:22:54,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 153 transitions, 1404 flow [2024-11-10 10:22:54,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 153 transitions, 1364 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:22:54,785 INFO L231 Difference]: Finished difference. Result has 80 places, 119 transitions, 1104 flow [2024-11-10 10:22:54,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1104, PETRI_PLACES=80, PETRI_TRANSITIONS=119} [2024-11-10 10:22:54,786 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 43 predicate places. [2024-11-10 10:22:54,786 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 119 transitions, 1104 flow [2024-11-10 10:22:54,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:22:54,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:54,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:54,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:22:54,787 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:54,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1475802820, now seen corresponding path program 3 times [2024-11-10 10:22:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281560242] [2024-11-10 10:22:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:55,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:55,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281560242] [2024-11-10 10:22:55,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281560242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:55,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:22:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145985154] [2024-11-10 10:22:55,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:55,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:22:55,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:22:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:22:55,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:22:55,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 119 transitions, 1104 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:22:55,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:55,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:22:55,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:55,392 INFO L124 PetriNetUnfolderBase]: 461/995 cut-off events. [2024-11-10 10:22:55,392 INFO L125 PetriNetUnfolderBase]: For 2558/2558 co-relation queries the response was YES. [2024-11-10 10:22:55,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 995 events. 461/995 cut-off events. For 2558/2558 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5524 event pairs, 126 based on Foata normal form. 11/999 useless extension candidates. Maximal degree in co-relation 3856. Up to 597 conditions per place. [2024-11-10 10:22:55,401 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 83 selfloop transitions, 66 changer transitions 0/158 dead transitions. [2024-11-10 10:22:55,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 158 transitions, 1602 flow [2024-11-10 10:22:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:22:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:22:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-11-10 10:22:55,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2024-11-10 10:22:55,403 INFO L175 Difference]: Start difference. First operand has 80 places, 119 transitions, 1104 flow. Second operand 12 states and 218 transitions. [2024-11-10 10:22:55,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 158 transitions, 1602 flow [2024-11-10 10:22:55,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 158 transitions, 1576 flow, removed 13 selfloop flow, removed 0 redundant places. [2024-11-10 10:22:55,416 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 1299 flow [2024-11-10 10:22:55,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1299, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2024-11-10 10:22:55,417 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 57 predicate places. [2024-11-10 10:22:55,417 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 1299 flow [2024-11-10 10:22:55,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:22:55,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:55,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:55,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:22:55,418 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:55,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:55,418 INFO L85 PathProgramCache]: Analyzing trace with hash 949076702, now seen corresponding path program 4 times [2024-11-10 10:22:55,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468284544] [2024-11-10 10:22:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:55,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:55,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468284544] [2024-11-10 10:22:55,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468284544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:55,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:55,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:22:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069910753] [2024-11-10 10:22:55,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:55,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:22:55,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:55,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:22:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:22:55,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:22:55,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 126 transitions, 1299 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-10 10:22:55,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:55,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:22:55,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:55,934 INFO L124 PetriNetUnfolderBase]: 685/1528 cut-off events. [2024-11-10 10:22:55,935 INFO L125 PetriNetUnfolderBase]: For 5006/5016 co-relation queries the response was YES. [2024-11-10 10:22:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 1528 events. 685/1528 cut-off events. For 5006/5016 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9287 event pairs, 192 based on Foata normal form. 12/1528 useless extension candidates. Maximal degree in co-relation 6117. Up to 555 conditions per place. [2024-11-10 10:22:55,946 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 141 selfloop transitions, 46 changer transitions 0/207 dead transitions. [2024-11-10 10:22:55,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 207 transitions, 2217 flow [2024-11-10 10:22:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:22:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:22:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-10 10:22:55,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5980066445182725 [2024-11-10 10:22:55,948 INFO L175 Difference]: Start difference. First operand has 94 places, 126 transitions, 1299 flow. Second operand 7 states and 180 transitions. [2024-11-10 10:22:55,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 207 transitions, 2217 flow [2024-11-10 10:22:55,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 207 transitions, 2040 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-10 10:22:55,965 INFO L231 Difference]: Finished difference. Result has 96 places, 136 transitions, 1380 flow [2024-11-10 10:22:55,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1380, PETRI_PLACES=96, PETRI_TRANSITIONS=136} [2024-11-10 10:22:55,966 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 59 predicate places. [2024-11-10 10:22:55,966 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 136 transitions, 1380 flow [2024-11-10 10:22:55,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-10 10:22:55,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:55,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:55,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:22:55,967 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:55,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash -893965746, now seen corresponding path program 5 times [2024-11-10 10:22:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008814180] [2024-11-10 10:22:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:56,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:56,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008814180] [2024-11-10 10:22:56,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008814180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:56,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:56,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:22:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148904445] [2024-11-10 10:22:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:56,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:22:56,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:22:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:22:56,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:22:56,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 136 transitions, 1380 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-10 10:22:56,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:56,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:22:56,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:56,494 INFO L124 PetriNetUnfolderBase]: 689/1538 cut-off events. [2024-11-10 10:22:56,495 INFO L125 PetriNetUnfolderBase]: For 5343/5355 co-relation queries the response was YES. [2024-11-10 10:22:56,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6251 conditions, 1538 events. 689/1538 cut-off events. For 5343/5355 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9292 event pairs, 249 based on Foata normal form. 12/1534 useless extension candidates. Maximal degree in co-relation 6221. Up to 850 conditions per place. [2024-11-10 10:22:56,507 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 126 selfloop transitions, 45 changer transitions 0/191 dead transitions. [2024-11-10 10:22:56,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 191 transitions, 2099 flow [2024-11-10 10:22:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:22:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:22:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-10 10:22:56,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5880398671096345 [2024-11-10 10:22:56,509 INFO L175 Difference]: Start difference. First operand has 96 places, 136 transitions, 1380 flow. Second operand 7 states and 177 transitions. [2024-11-10 10:22:56,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 191 transitions, 2099 flow [2024-11-10 10:22:56,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 191 transitions, 2030 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-10 10:22:56,534 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1494 flow [2024-11-10 10:22:56,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1494, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-11-10 10:22:56,535 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 65 predicate places. [2024-11-10 10:22:56,536 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1494 flow [2024-11-10 10:22:56,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-10 10:22:56,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:56,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:56,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:22:56,537 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:56,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1094088712, now seen corresponding path program 6 times [2024-11-10 10:22:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796181991] [2024-11-10 10:22:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:56,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796181991] [2024-11-10 10:22:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796181991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:56,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:56,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 10:22:56,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209545717] [2024-11-10 10:22:56,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:56,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:22:56,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:22:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-10 10:22:56,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:22:56,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1494 flow. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 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) [2024-11-10 10:22:56,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:56,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:22:56,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:57,202 INFO L124 PetriNetUnfolderBase]: 739/1597 cut-off events. [2024-11-10 10:22:57,202 INFO L125 PetriNetUnfolderBase]: For 5549/5549 co-relation queries the response was YES. [2024-11-10 10:22:57,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6648 conditions, 1597 events. 739/1597 cut-off events. For 5549/5549 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9541 event pairs, 234 based on Foata normal form. 12/1599 useless extension candidates. Maximal degree in co-relation 6615. Up to 1042 conditions per place. [2024-11-10 10:22:57,213 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 95 selfloop transitions, 70 changer transitions 8/182 dead transitions. [2024-11-10 10:22:57,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 182 transitions, 2150 flow [2024-11-10 10:22:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:22:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:22:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-11-10 10:22:57,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42790697674418604 [2024-11-10 10:22:57,215 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1494 flow. Second operand 10 states and 184 transitions. [2024-11-10 10:22:57,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 182 transitions, 2150 flow [2024-11-10 10:22:57,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 182 transitions, 2043 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-10 10:22:57,235 INFO L231 Difference]: Finished difference. Result has 112 places, 149 transitions, 1706 flow [2024-11-10 10:22:57,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1706, PETRI_PLACES=112, PETRI_TRANSITIONS=149} [2024-11-10 10:22:57,236 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 75 predicate places. [2024-11-10 10:22:57,236 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 149 transitions, 1706 flow [2024-11-10 10:22:57,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 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) [2024-11-10 10:22:57,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:57,236 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:57,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:22:57,236 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:57,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1769040888, now seen corresponding path program 7 times [2024-11-10 10:22:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:57,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369703809] [2024-11-10 10:22:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:57,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369703809] [2024-11-10 10:22:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369703809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:57,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:22:57,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227774677] [2024-11-10 10:22:57,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:57,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:22:57,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:22:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:22:57,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:22:57,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 149 transitions, 1706 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:22:57,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:57,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:22:57,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:57,830 INFO L124 PetriNetUnfolderBase]: 616/1358 cut-off events. [2024-11-10 10:22:57,830 INFO L125 PetriNetUnfolderBase]: For 4882/4882 co-relation queries the response was YES. [2024-11-10 10:22:57,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 1358 events. 616/1358 cut-off events. For 4882/4882 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7960 event pairs, 222 based on Foata normal form. 11/1361 useless extension candidates. Maximal degree in co-relation 5630. Up to 930 conditions per place. [2024-11-10 10:22:57,840 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 92 selfloop transitions, 47 changer transitions 0/148 dead transitions. [2024-11-10 10:22:57,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 148 transitions, 1707 flow [2024-11-10 10:22:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:22:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:22:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-11-10 10:22:57,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-11-10 10:22:57,841 INFO L175 Difference]: Start difference. First operand has 112 places, 149 transitions, 1706 flow. Second operand 10 states and 186 transitions. [2024-11-10 10:22:57,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 148 transitions, 1707 flow [2024-11-10 10:22:57,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 148 transitions, 1602 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-11-10 10:22:57,858 INFO L231 Difference]: Finished difference. Result has 115 places, 124 transitions, 1318 flow [2024-11-10 10:22:57,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1318, PETRI_PLACES=115, PETRI_TRANSITIONS=124} [2024-11-10 10:22:57,859 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 78 predicate places. [2024-11-10 10:22:57,859 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 124 transitions, 1318 flow [2024-11-10 10:22:57,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:22:57,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:57,860 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:57,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 10:22:57,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:57,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1955647106, now seen corresponding path program 1 times [2024-11-10 10:22:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797819616] [2024-11-10 10:22:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797819616] [2024-11-10 10:22:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797819616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765472072] [2024-11-10 10:22:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:58,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:58,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:58,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:22:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:58,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:22:58,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:58,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-10 10:22:58,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:22:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:58,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:58,710 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-10 10:22:58,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 1 [2024-11-10 10:22:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:22:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765472072] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:58,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:22:58,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 18 [2024-11-10 10:22:58,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600108595] [2024-11-10 10:22:58,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:58,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:22:58,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:22:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:22:58,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:22:58,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 124 transitions, 1318 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:58,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:58,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:22:58,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:59,170 INFO L124 PetriNetUnfolderBase]: 1016/2217 cut-off events. [2024-11-10 10:22:59,170 INFO L125 PetriNetUnfolderBase]: For 7399/7399 co-relation queries the response was YES. [2024-11-10 10:22:59,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8740 conditions, 2217 events. 1016/2217 cut-off events. For 7399/7399 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 14266 event pairs, 100 based on Foata normal form. 24/2232 useless extension candidates. Maximal degree in co-relation 8701. Up to 1049 conditions per place. [2024-11-10 10:22:59,187 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 119 selfloop transitions, 92 changer transitions 2/222 dead transitions. [2024-11-10 10:22:59,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 222 transitions, 2457 flow [2024-11-10 10:22:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:22:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:22:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-11-10 10:22:59,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-11-10 10:22:59,191 INFO L175 Difference]: Start difference. First operand has 115 places, 124 transitions, 1318 flow. Second operand 8 states and 165 transitions. [2024-11-10 10:22:59,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 222 transitions, 2457 flow [2024-11-10 10:22:59,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 222 transitions, 2290 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-11-10 10:22:59,211 INFO L231 Difference]: Finished difference. Result has 116 places, 179 transitions, 2062 flow [2024-11-10 10:22:59,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2062, PETRI_PLACES=116, PETRI_TRANSITIONS=179} [2024-11-10 10:22:59,211 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 79 predicate places. [2024-11-10 10:22:59,211 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 179 transitions, 2062 flow [2024-11-10 10:22:59,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:59,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:59,212 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:59,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:22:59,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 10:22:59,413 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:22:59,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1114307330, now seen corresponding path program 2 times [2024-11-10 10:22:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:59,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346151171] [2024-11-10 10:22:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:59,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:59,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346151171] [2024-11-10 10:22:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346151171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432391222] [2024-11-10 10:22:59,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:22:59,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:59,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:59,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:59,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:23:00,035 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:23:00,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:23:00,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:23:00,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:23:00,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 10:23:00,061 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:23:00,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-10 10:23:00,131 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2024-11-10 10:23:00,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 14 [2024-11-10 10:23:00,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:23:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:23:00,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:23:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432391222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:23:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:23:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2024-11-10 10:23:00,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604396604] [2024-11-10 10:23:00,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:00,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:23:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:00,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:23:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:23:00,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:23:00,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 179 transitions, 2062 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2024-11-10 10:23:00,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:00,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:23:00,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:00,934 INFO L124 PetriNetUnfolderBase]: 1843/4001 cut-off events. [2024-11-10 10:23:00,934 INFO L125 PetriNetUnfolderBase]: For 19777/19785 co-relation queries the response was YES. [2024-11-10 10:23:00,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18458 conditions, 4001 events. 1843/4001 cut-off events. For 19777/19785 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 29040 event pairs, 85 based on Foata normal form. 72/4069 useless extension candidates. Maximal degree in co-relation 18416. Up to 885 conditions per place. [2024-11-10 10:23:01,000 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 138 selfloop transitions, 250 changer transitions 0/409 dead transitions. [2024-11-10 10:23:01,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 409 transitions, 5045 flow [2024-11-10 10:23:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:23:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:23:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 296 transitions. [2024-11-10 10:23:01,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45891472868217054 [2024-11-10 10:23:01,005 INFO L175 Difference]: Start difference. First operand has 116 places, 179 transitions, 2062 flow. Second operand 15 states and 296 transitions. [2024-11-10 10:23:01,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 409 transitions, 5045 flow [2024-11-10 10:23:01,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 409 transitions, 4938 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-11-10 10:23:01,108 INFO L231 Difference]: Finished difference. Result has 134 places, 332 transitions, 4493 flow [2024-11-10 10:23:01,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4493, PETRI_PLACES=134, PETRI_TRANSITIONS=332} [2024-11-10 10:23:01,109 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 97 predicate places. [2024-11-10 10:23:01,109 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 332 transitions, 4493 flow [2024-11-10 10:23:01,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2024-11-10 10:23:01,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:01,109 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:01,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 10:23:01,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 10:23:01,311 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:23:01,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1817699627, now seen corresponding path program 1 times [2024-11-10 10:23:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115927249] [2024-11-10 10:23:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115927249] [2024-11-10 10:23:01,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115927249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:23:01,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:23:01,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:23:01,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582007725] [2024-11-10 10:23:01,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:01,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:23:01,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:01,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:23:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:23:01,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:23:01,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 332 transitions, 4493 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:23:01,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:01,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:23:01,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:01,945 INFO L124 PetriNetUnfolderBase]: 1792/3806 cut-off events. [2024-11-10 10:23:01,946 INFO L125 PetriNetUnfolderBase]: For 26882/26897 co-relation queries the response was YES. [2024-11-10 10:23:01,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21666 conditions, 3806 events. 1792/3806 cut-off events. For 26882/26897 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 26615 event pairs, 461 based on Foata normal form. 6/3763 useless extension candidates. Maximal degree in co-relation 21617. Up to 3159 conditions per place. [2024-11-10 10:23:01,977 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 265 selfloop transitions, 8 changer transitions 19/307 dead transitions. [2024-11-10 10:23:01,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 307 transitions, 4566 flow [2024-11-10 10:23:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:23:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:23:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-11-10 10:23:01,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-11-10 10:23:01,982 INFO L175 Difference]: Start difference. First operand has 134 places, 332 transitions, 4493 flow. Second operand 5 states and 101 transitions. [2024-11-10 10:23:01,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 307 transitions, 4566 flow [2024-11-10 10:23:02,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 307 transitions, 4353 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-11-10 10:23:02,060 INFO L231 Difference]: Finished difference. Result has 137 places, 287 transitions, 3553 flow [2024-11-10 10:23:02,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3553, PETRI_PLACES=137, PETRI_TRANSITIONS=287} [2024-11-10 10:23:02,062 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 100 predicate places. [2024-11-10 10:23:02,062 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 287 transitions, 3553 flow [2024-11-10 10:23:02,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:23:02,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:02,062 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:02,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 10:23:02,063 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:23:02,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1671276439, now seen corresponding path program 1 times [2024-11-10 10:23:02,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:02,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351423553] [2024-11-10 10:23:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:02,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:02,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:02,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351423553] [2024-11-10 10:23:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351423553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:23:02,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240683244] [2024-11-10 10:23:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:02,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:23:02,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:23:02,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:23:02,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:23:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:02,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:23:02,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:23:03,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-10 10:23:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:03,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:23:03,759 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-10 10:23:03,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2024-11-10 10:23:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:03,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240683244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:23:03,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:23:03,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 26 [2024-11-10 10:23:03,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663053573] [2024-11-10 10:23:03,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:23:03,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 10:23:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:03,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 10:23:03,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-10 10:23:03,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:23:03,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 287 transitions, 3553 flow. Second operand has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 26 states have internal predecessors, (322), 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) [2024-11-10 10:23:03,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:03,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:23:03,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:05,703 INFO L124 PetriNetUnfolderBase]: 1974/4048 cut-off events. [2024-11-10 10:23:05,703 INFO L125 PetriNetUnfolderBase]: For 24858/24858 co-relation queries the response was YES. [2024-11-10 10:23:05,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22262 conditions, 4048 events. 1974/4048 cut-off events. For 24858/24858 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27962 event pairs, 276 based on Foata normal form. 31/4051 useless extension candidates. Maximal degree in co-relation 22211. Up to 1632 conditions per place. [2024-11-10 10:23:05,742 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 155 selfloop transitions, 228 changer transitions 12/403 dead transitions. [2024-11-10 10:23:05,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 403 transitions, 5313 flow [2024-11-10 10:23:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:23:05,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:23:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 354 transitions. [2024-11-10 10:23:05,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3579373104145602 [2024-11-10 10:23:05,748 INFO L175 Difference]: Start difference. First operand has 137 places, 287 transitions, 3553 flow. Second operand 23 states and 354 transitions. [2024-11-10 10:23:05,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 403 transitions, 5313 flow [2024-11-10 10:23:05,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 403 transitions, 5148 flow, removed 35 selfloop flow, removed 22 redundant places. [2024-11-10 10:23:05,812 INFO L231 Difference]: Finished difference. Result has 136 places, 301 transitions, 4059 flow [2024-11-10 10:23:05,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4059, PETRI_PLACES=136, PETRI_TRANSITIONS=301} [2024-11-10 10:23:05,814 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 99 predicate places. [2024-11-10 10:23:05,814 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 301 transitions, 4059 flow [2024-11-10 10:23:05,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 26 states have internal predecessors, (322), 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) [2024-11-10 10:23:05,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:05,815 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:05,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 10:23:06,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:23:06,020 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:23:06,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1042666089, now seen corresponding path program 1 times [2024-11-10 10:23:06,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:06,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272980738] [2024-11-10 10:23:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:06,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272980738] [2024-11-10 10:23:06,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272980738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:23:06,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357284878] [2024-11-10 10:23:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:06,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:23:06,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:23:06,655 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:23:06,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:23:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:06,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 10:23:06,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:23:06,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 10:23:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:23:06,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:23:06,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-10 10:23:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:23:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357284878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:23:06,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:23:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 22 [2024-11-10 10:23:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656357460] [2024-11-10 10:23:06,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:23:06,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 10:23:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 10:23:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-10 10:23:06,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:23:06,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 301 transitions, 4059 flow. Second operand has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 22 states have internal predecessors, (321), 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) [2024-11-10 10:23:06,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:06,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:23:06,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:08,590 INFO L124 PetriNetUnfolderBase]: 1671/3721 cut-off events. [2024-11-10 10:23:08,591 INFO L125 PetriNetUnfolderBase]: For 34134/34158 co-relation queries the response was YES. [2024-11-10 10:23:08,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22372 conditions, 3721 events. 1671/3721 cut-off events. For 34134/34158 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 26421 event pairs, 102 based on Foata normal form. 144/3832 useless extension candidates. Maximal degree in co-relation 22329. Up to 885 conditions per place. [2024-11-10 10:23:08,633 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 450 selfloop transitions, 240 changer transitions 23/728 dead transitions. [2024-11-10 10:23:08,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 728 transitions, 11400 flow [2024-11-10 10:23:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 10:23:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 10:23:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 480 transitions. [2024-11-10 10:23:08,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4293381037567084 [2024-11-10 10:23:08,635 INFO L175 Difference]: Start difference. First operand has 136 places, 301 transitions, 4059 flow. Second operand 26 states and 480 transitions. [2024-11-10 10:23:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 728 transitions, 11400 flow [2024-11-10 10:23:08,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 728 transitions, 10224 flow, removed 373 selfloop flow, removed 15 redundant places. [2024-11-10 10:23:08,857 INFO L231 Difference]: Finished difference. Result has 156 places, 426 transitions, 5733 flow [2024-11-10 10:23:08,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2700, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5733, PETRI_PLACES=156, PETRI_TRANSITIONS=426} [2024-11-10 10:23:08,860 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 119 predicate places. [2024-11-10 10:23:08,860 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 426 transitions, 5733 flow [2024-11-10 10:23:08,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 22 states have internal predecessors, (321), 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) [2024-11-10 10:23:08,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:08,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:08,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:23:09,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 10:23:09,065 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:23:09,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2088040825, now seen corresponding path program 2 times [2024-11-10 10:23:09,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:09,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406594550] [2024-11-10 10:23:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:09,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406594550] [2024-11-10 10:23:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406594550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:23:09,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282230233] [2024-11-10 10:23:09,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:23:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:23:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:23:09,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:23:09,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:23:09,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:23:09,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:23:09,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 10:23:09,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:23:09,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 10:23:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:23:09,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:23:09,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-10 10:23:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:23:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282230233] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:23:09,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:23:09,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 19 [2024-11-10 10:23:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167735830] [2024-11-10 10:23:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:09,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:23:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:23:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:23:09,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:23:09,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 426 transitions, 5733 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-10 10:23:09,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:09,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:23:09,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:10,425 INFO L124 PetriNetUnfolderBase]: 1739/3900 cut-off events. [2024-11-10 10:23:10,425 INFO L125 PetriNetUnfolderBase]: For 41067/41120 co-relation queries the response was YES. [2024-11-10 10:23:10,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25396 conditions, 3900 events. 1739/3900 cut-off events. For 41067/41120 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 28090 event pairs, 82 based on Foata normal form. 39/3922 useless extension candidates. Maximal degree in co-relation 25347. Up to 1061 conditions per place. [2024-11-10 10:23:10,467 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 536 selfloop transitions, 151 changer transitions 0/702 dead transitions. [2024-11-10 10:23:10,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 702 transitions, 10914 flow [2024-11-10 10:23:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:23:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:23:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-11-10 10:23:10,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5913621262458472 [2024-11-10 10:23:10,469 INFO L175 Difference]: Start difference. First operand has 156 places, 426 transitions, 5733 flow. Second operand 7 states and 178 transitions. [2024-11-10 10:23:10,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 702 transitions, 10914 flow [2024-11-10 10:23:10,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 702 transitions, 10420 flow, removed 239 selfloop flow, removed 5 redundant places. [2024-11-10 10:23:10,632 INFO L231 Difference]: Finished difference. Result has 156 places, 442 transitions, 5832 flow [2024-11-10 10:23:10,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5349, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5832, PETRI_PLACES=156, PETRI_TRANSITIONS=442} [2024-11-10 10:23:10,633 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 119 predicate places. [2024-11-10 10:23:10,633 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 442 transitions, 5832 flow [2024-11-10 10:23:10,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-10 10:23:10,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:10,634 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:10,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:23:10,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 10:23:10,838 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:23:10,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash -73455899, now seen corresponding path program 3 times [2024-11-10 10:23:10,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:10,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592841089] [2024-11-10 10:23:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592841089] [2024-11-10 10:23:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592841089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:23:11,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154375921] [2024-11-10 10:23:11,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:23:11,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:23:11,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:23:11,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:23:11,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:23:11,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:23:11,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:23:11,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:23:11,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:23:11,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 10:23:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:23:11,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:23:11,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-10 10:23:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:23:11,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154375921] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:23:11,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:23:11,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 19 [2024-11-10 10:23:11,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615694450] [2024-11-10 10:23:11,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:11,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:23:11,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:23:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:23:11,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:23:11,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 442 transitions, 5832 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-10 10:23:11,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:11,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:23:11,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:11,945 INFO L124 PetriNetUnfolderBase]: 554/1400 cut-off events. [2024-11-10 10:23:11,946 INFO L125 PetriNetUnfolderBase]: For 13174/13208 co-relation queries the response was YES. [2024-11-10 10:23:11,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8944 conditions, 1400 events. 554/1400 cut-off events. For 13174/13208 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8585 event pairs, 92 based on Foata normal form. 50/1440 useless extension candidates. Maximal degree in co-relation 8898. Up to 531 conditions per place. [2024-11-10 10:23:11,955 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 0 selfloop transitions, 0 changer transitions 324/324 dead transitions. [2024-11-10 10:23:11,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 324 transitions, 5103 flow [2024-11-10 10:23:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:23:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:23:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-11-10 10:23:11,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 10:23:11,957 INFO L175 Difference]: Start difference. First operand has 156 places, 442 transitions, 5832 flow. Second operand 6 states and 129 transitions. [2024-11-10 10:23:11,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 324 transitions, 5103 flow [2024-11-10 10:23:11,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 324 transitions, 4426 flow, removed 77 selfloop flow, removed 23 redundant places. [2024-11-10 10:23:11,998 INFO L231 Difference]: Finished difference. Result has 125 places, 0 transitions, 0 flow [2024-11-10 10:23:11,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2890, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=125, PETRI_TRANSITIONS=0} [2024-11-10 10:23:12,004 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 88 predicate places. [2024-11-10 10:23:12,005 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 0 transitions, 0 flow [2024-11-10 10:23:12,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-10 10:23:12,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:23:12,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:23:12,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-10 10:23:12,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:23:12,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:23:12,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 10:23:12,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 10:23:12,217 INFO L407 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1, 1, 1] [2024-11-10 10:23:12,224 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:23:12,224 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:23:12,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:23:12 BasicIcfg [2024-11-10 10:23:12,228 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:23:12,229 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:23:12,229 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:23:12,229 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:23:12,229 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:52" (3/4) ... [2024-11-10 10:23:12,231 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:23:12,233 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure worker [2024-11-10 10:23:12,238 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2024-11-10 10:23:12,238 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-11-10 10:23:12,238 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 10:23:12,239 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 10:23:12,239 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 10:23:12,316 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:23:12,316 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:23:12,316 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:23:12,317 INFO L158 Benchmark]: Toolchain (without parser) took 21377.76ms. Allocated memory was 146.8MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 75.8MB in the beginning and 671.8MB in the end (delta: -595.9MB). Peak memory consumption was 696.7MB. Max. memory is 16.1GB. [2024-11-10 10:23:12,318 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:23:12,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.27ms. Allocated memory is still 146.8MB. Free memory was 75.5MB in the beginning and 52.7MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 10:23:12,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.03ms. Allocated memory is still 146.8MB. Free memory was 52.7MB in the beginning and 50.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:23:12,318 INFO L158 Benchmark]: Boogie Preprocessor took 53.53ms. Allocated memory is still 146.8MB. Free memory was 50.2MB in the beginning and 48.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:23:12,319 INFO L158 Benchmark]: IcfgBuilder took 613.75ms. Allocated memory was 146.8MB in the beginning and 234.9MB in the end (delta: 88.1MB). Free memory was 47.8MB in the beginning and 173.9MB in the end (delta: -126.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2024-11-10 10:23:12,319 INFO L158 Benchmark]: TraceAbstraction took 20070.27ms. Allocated memory was 234.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 172.9MB in the beginning and 675.9MB in the end (delta: -503.1MB). Peak memory consumption was 702.8MB. Max. memory is 16.1GB. [2024-11-10 10:23:12,319 INFO L158 Benchmark]: Witness Printer took 87.78ms. Allocated memory is still 1.4GB. Free memory was 675.9MB in the beginning and 671.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:23:12,320 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.27ms. Allocated memory is still 146.8MB. Free memory was 75.5MB in the beginning and 52.7MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.03ms. Allocated memory is still 146.8MB. Free memory was 52.7MB in the beginning and 50.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.53ms. Allocated memory is still 146.8MB. Free memory was 50.2MB in the beginning and 48.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 613.75ms. Allocated memory was 146.8MB in the beginning and 234.9MB in the end (delta: 88.1MB). Free memory was 47.8MB in the beginning and 173.9MB in the end (delta: -126.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 20070.27ms. Allocated memory was 234.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 172.9MB in the beginning and 675.9MB in the end (delta: -503.1MB). Peak memory consumption was 702.8MB. Max. memory is 16.1GB. * Witness Printer took 87.78ms. Allocated memory is still 1.4GB. Free memory was 675.9MB in the beginning and 671.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 60 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.9s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1382 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1366 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 306 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4967 IncrementalHoareTripleChecker+Invalid, 5086 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 19 mSDtfsCounter, 4967 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 598 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5832occurred in iteration=16, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 530 NumberOfCodeBlocks, 483 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 659 ConstructedInterpolants, 8 QuantifiedInterpolants, 4904 SizeOfPredicates, 68 NumberOfNonLiveVariables, 960 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 28 InterpolantComputations, 15 PerfectInterpolantSequences, 92/134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:23:12,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE