./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -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 d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:53:15,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:53:15,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:53:15,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:53:15,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:53:15,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:53:15,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:53:15,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:53:15,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:53:15,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:53:15,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:53:15,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:53:15,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:53:15,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:53:15,677 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:53:15,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:53:15,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:53:15,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:53:15,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:53:15,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:53:15,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:53:15,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:53:15,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:53:15,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:53:15,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:53:15,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:53:15,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:53:15,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:53:15,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:53:15,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:53:15,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:53:15,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:53:15,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:53:15,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:53:15,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:53:15,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:53:15,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:53:15,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:53:15,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:53:15,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:53:15,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:53:15,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:53:15,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 [2024-11-22 13:53:15,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:53:15,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:53:15,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:53:15,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:53:15,947 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:53:15,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2024-11-22 13:53:17,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:53:17,414 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:53:17,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2024-11-22 13:53:17,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ea43280/ad2838d60e4341c7977244651c37651b/FLAGafa9ae66f [2024-11-22 13:53:17,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ea43280/ad2838d60e4341c7977244651c37651b [2024-11-22 13:53:17,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:53:17,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:53:17,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:53:17,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:53:17,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:53:17,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc0e0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17, skipping insertion in model container [2024-11-22 13:53:17,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,484 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:53:17,796 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/weaver/popl20-queue-add-3.wvr.c[3451,3464] [2024-11-22 13:53:17,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:53:17,819 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:53:17,845 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/weaver/popl20-queue-add-3.wvr.c[3451,3464] [2024-11-22 13:53:17,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:53:17,868 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:53:17,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17 WrapperNode [2024-11-22 13:53:17,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:53:17,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:53:17,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:53:17,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:53:17,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,907 INFO L138 Inliner]: procedures = 24, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 239 [2024-11-22 13:53:17,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:53:17,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:53:17,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:53:17,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:53:17,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,939 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-22 13:53:17,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:53:17,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:53:17,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:53:17,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:53:17,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (1/1) ... [2024-11-22 13:53:17,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:53:17,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:17,994 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) [2024-11-22 13:53:17,999 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 [2024-11-22 13:53:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:53:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:53:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:53:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:53:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:53:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:53:18,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:53:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:53:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:53:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:53:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:53:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:53:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:53:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:53:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:53:18,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:53:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:53:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:53:18,065 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:53:18,241 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:53:18,245 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:53:18,483 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:53:18,484 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:53:18,671 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:53:18,672 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-22 13:53:18,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:18 BoogieIcfgContainer [2024-11-22 13:53:18,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:53:18,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:53:18,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:53:18,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:53:18,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:53:17" (1/3) ... [2024-11-22 13:53:18,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb4840a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:18, skipping insertion in model container [2024-11-22 13:53:18,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:17" (2/3) ... [2024-11-22 13:53:18,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb4840a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:18, skipping insertion in model container [2024-11-22 13:53:18,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:18" (3/3) ... [2024-11-22 13:53:18,689 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2024-11-22 13:53:18,709 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:53:18,709 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:53:18,709 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:53:18,754 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:53:18,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 109 flow [2024-11-22 13:53:18,833 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-11-22 13:53:18,835 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:53:18,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 7/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-22 13:53:18,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 109 flow [2024-11-22 13:53:18,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 98 flow [2024-11-22 13:53:18,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:53:18,855 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;@59ec9c64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:53:18,855 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:53:18,865 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:53:18,865 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2024-11-22 13:53:18,865 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:53:18,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:18,866 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:18,866 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:18,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash -618360053, now seen corresponding path program 1 times [2024-11-22 13:53:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284538344] [2024-11-22 13:53:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284538344] [2024-11-22 13:53:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284538344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:19,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:19,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:53:19,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663654978] [2024-11-22 13:53:19,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:19,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:53:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:19,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:53:19,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:53:19,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-22 13:53:19,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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) [2024-11-22 13:53:19,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:19,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-22 13:53:19,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:19,327 INFO L124 PetriNetUnfolderBase]: 727/1253 cut-off events. [2024-11-22 13:53:19,327 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-22 13:53:19,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1253 events. 727/1253 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6247 event pairs, 595 based on Foata normal form. 130/1241 useless extension candidates. Maximal degree in co-relation 2182. Up to 991 conditions per place. [2024-11-22 13:53:19,341 INFO L140 encePairwiseOnDemand]: 42/44 looper letters, 28 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2024-11-22 13:53:19,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 150 flow [2024-11-22 13:53:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:53:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 13:53:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-22 13:53:19,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-22 13:53:19,352 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 2 states and 56 transitions. [2024-11-22 13:53:19,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 150 flow [2024-11-22 13:53:19,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:53:19,358 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 82 flow [2024-11-22 13:53:19,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2024-11-22 13:53:19,368 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-11-22 13:53:19,368 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 82 flow [2024-11-22 13:53:19,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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) [2024-11-22 13:53:19,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:19,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:19,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:53:19,369 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:19,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1956926361, now seen corresponding path program 1 times [2024-11-22 13:53:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:19,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904362094] [2024-11-22 13:53:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904362094] [2024-11-22 13:53:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904362094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:53:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239096503] [2024-11-22 13:53:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:19,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:53:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:53:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:53:19,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-22 13:53:19,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-22 13:53:19,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:19,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-22 13:53:19,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:19,709 INFO L124 PetriNetUnfolderBase]: 733/1237 cut-off events. [2024-11-22 13:53:19,710 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-22 13:53:19,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1237 events. 733/1237 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5962 event pairs, 189 based on Foata normal form. 27/1185 useless extension candidates. Maximal degree in co-relation 2309. Up to 875 conditions per place. [2024-11-22 13:53:19,716 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 37 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-11-22 13:53:19,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 188 flow [2024-11-22 13:53:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:53:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:53:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-22 13:53:19,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-22 13:53:19,720 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 82 flow. Second operand 3 states and 80 transitions. [2024-11-22 13:53:19,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 188 flow [2024-11-22 13:53:19,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:53:19,722 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 101 flow [2024-11-22 13:53:19,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2024-11-22 13:53:19,724 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-22 13:53:19,724 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 101 flow [2024-11-22 13:53:19,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-22 13:53:19,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:19,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:19,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:53:19,725 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:19,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash -431758607, now seen corresponding path program 2 times [2024-11-22 13:53:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:19,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027896824] [2024-11-22 13:53:19,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:53:19,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:19,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:53:19,754 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:19,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:19,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027896824] [2024-11-22 13:53:19,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027896824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:19,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:19,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:53:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899714685] [2024-11-22 13:53:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:19,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:53:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:53:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:53:19,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-22 13:53:19,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-22 13:53:19,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:19,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-22 13:53:19,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:19,977 INFO L124 PetriNetUnfolderBase]: 663/1217 cut-off events. [2024-11-22 13:53:19,978 INFO L125 PetriNetUnfolderBase]: For 204/207 co-relation queries the response was YES. [2024-11-22 13:53:19,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 1217 events. 663/1217 cut-off events. For 204/207 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6040 event pairs, 248 based on Foata normal form. 26/1151 useless extension candidates. Maximal degree in co-relation 2454. Up to 555 conditions per place. [2024-11-22 13:53:19,983 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-22 13:53:19,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 217 flow [2024-11-22 13:53:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:53:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:53:19,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-22 13:53:19,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-22 13:53:19,985 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 101 flow. Second operand 3 states and 80 transitions. [2024-11-22 13:53:19,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 217 flow [2024-11-22 13:53:19,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:19,986 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 110 flow [2024-11-22 13:53:19,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-22 13:53:19,987 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-22 13:53:19,988 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 110 flow [2024-11-22 13:53:19,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-22 13:53:19,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:19,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:19,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:53:19,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:19,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash 215404707, now seen corresponding path program 3 times [2024-11-22 13:53:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66751628] [2024-11-22 13:53:19,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:53:19,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:20,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:53:20,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66751628] [2024-11-22 13:53:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66751628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:20,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:53:20,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695050641] [2024-11-22 13:53:20,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:20,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:53:20,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:20,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:53:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:53:20,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-22 13:53:20,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2024-11-22 13:53:20,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:20,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-22 13:53:20,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:20,295 INFO L124 PetriNetUnfolderBase]: 711/1316 cut-off events. [2024-11-22 13:53:20,296 INFO L125 PetriNetUnfolderBase]: For 284/286 co-relation queries the response was YES. [2024-11-22 13:53:20,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 1316 events. 711/1316 cut-off events. For 284/286 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6534 event pairs, 521 based on Foata normal form. 27/1251 useless extension candidates. Maximal degree in co-relation 2781. Up to 950 conditions per place. [2024-11-22 13:53:20,301 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 30 selfloop transitions, 2 changer transitions 13/55 dead transitions. [2024-11-22 13:53:20,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 231 flow [2024-11-22 13:53:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:53:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:53:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-22 13:53:20,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-22 13:53:20,306 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 110 flow. Second operand 4 states and 96 transitions. [2024-11-22 13:53:20,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 231 flow [2024-11-22 13:53:20,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:20,308 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 124 flow [2024-11-22 13:53:20,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-22 13:53:20,309 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-22 13:53:20,310 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 124 flow [2024-11-22 13:53:20,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2024-11-22 13:53:20,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:20,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:20,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:53:20,311 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:20,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:20,311 INFO L85 PathProgramCache]: Analyzing trace with hash -385150933, now seen corresponding path program 1 times [2024-11-22 13:53:20,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:20,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189193210] [2024-11-22 13:53:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:20,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189193210] [2024-11-22 13:53:20,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189193210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:20,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:20,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:53:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690128174] [2024-11-22 13:53:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:20,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:53:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:53:20,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:53:20,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-22 13:53:20,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-22 13:53:20,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:20,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-22 13:53:20,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:20,587 INFO L124 PetriNetUnfolderBase]: 905/1642 cut-off events. [2024-11-22 13:53:20,587 INFO L125 PetriNetUnfolderBase]: For 471/476 co-relation queries the response was YES. [2024-11-22 13:53:20,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1642 events. 905/1642 cut-off events. For 471/476 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8514 event pairs, 676 based on Foata normal form. 32/1581 useless extension candidates. Maximal degree in co-relation 3556. Up to 951 conditions per place. [2024-11-22 13:53:20,594 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 31 selfloop transitions, 2 changer transitions 19/62 dead transitions. [2024-11-22 13:53:20,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 286 flow [2024-11-22 13:53:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:53:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:53:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-22 13:53:20,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-22 13:53:20,596 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 124 flow. Second operand 4 states and 99 transitions. [2024-11-22 13:53:20,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 286 flow [2024-11-22 13:53:20,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 274 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-22 13:53:20,600 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 130 flow [2024-11-22 13:53:20,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-22 13:53:20,601 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-11-22 13:53:20,602 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 130 flow [2024-11-22 13:53:20,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-22 13:53:20,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:20,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:20,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:53:20,603 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:20,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2147043510, now seen corresponding path program 1 times [2024-11-22 13:53:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961236123] [2024-11-22 13:53:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:53:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:20,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961236123] [2024-11-22 13:53:20,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961236123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:20,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:20,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:53:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620394009] [2024-11-22 13:53:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:20,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:53:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:53:20,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:53:20,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-22 13:53:20,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 130 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-11-22 13:53:20,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:20,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-22 13:53:20,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:21,171 INFO L124 PetriNetUnfolderBase]: 1274/2112 cut-off events. [2024-11-22 13:53:21,171 INFO L125 PetriNetUnfolderBase]: For 619/631 co-relation queries the response was YES. [2024-11-22 13:53:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4777 conditions, 2112 events. 1274/2112 cut-off events. For 619/631 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11525 event pairs, 342 based on Foata normal form. 1/2056 useless extension candidates. Maximal degree in co-relation 4768. Up to 775 conditions per place. [2024-11-22 13:53:21,179 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 78 selfloop transitions, 9 changer transitions 10/105 dead transitions. [2024-11-22 13:53:21,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 105 transitions, 501 flow [2024-11-22 13:53:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:53:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:53:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-11-22 13:53:21,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142045454545454 [2024-11-22 13:53:21,181 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 130 flow. Second operand 8 states and 181 transitions. [2024-11-22 13:53:21,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 105 transitions, 501 flow [2024-11-22 13:53:21,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 105 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:53:21,183 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 174 flow [2024-11-22 13:53:21,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-22 13:53:21,184 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-11-22 13:53:21,184 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 174 flow [2024-11-22 13:53:21,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-11-22 13:53:21,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:21,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:21,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:53:21,185 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:21,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 795121444, now seen corresponding path program 1 times [2024-11-22 13:53:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369111092] [2024-11-22 13:53:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:21,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:21,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369111092] [2024-11-22 13:53:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369111092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380122086] [2024-11-22 13:53:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:21,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:21,303 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) [2024-11-22 13:53:21,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:53:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:21,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:53:21,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:21,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:21,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380122086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:53:21,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:53:21,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-22 13:53:21,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999064043] [2024-11-22 13:53:21,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:53:21,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:53:21,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:53:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:53:21,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-22 13:53:21,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 174 flow. Second operand has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 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) [2024-11-22 13:53:21,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:21,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-22 13:53:21,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:21,952 INFO L124 PetriNetUnfolderBase]: 1661/3258 cut-off events. [2024-11-22 13:53:21,952 INFO L125 PetriNetUnfolderBase]: For 1426/1429 co-relation queries the response was YES. [2024-11-22 13:53:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 3258 events. 1661/3258 cut-off events. For 1426/1429 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21574 event pairs, 1040 based on Foata normal form. 114/3222 useless extension candidates. Maximal degree in co-relation 7595. Up to 1488 conditions per place. [2024-11-22 13:53:21,969 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 66 selfloop transitions, 5 changer transitions 4/88 dead transitions. [2024-11-22 13:53:21,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 456 flow [2024-11-22 13:53:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-22 13:53:21,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-22 13:53:21,971 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 174 flow. Second operand 6 states and 144 transitions. [2024-11-22 13:53:21,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 456 flow [2024-11-22 13:53:21,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 449 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 13:53:21,973 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 212 flow [2024-11-22 13:53:21,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-11-22 13:53:21,974 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-11-22 13:53:21,974 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 212 flow [2024-11-22 13:53:21,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 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) [2024-11-22 13:53:21,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:21,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:21,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:53:22,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:22,176 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:22,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:22,177 INFO L85 PathProgramCache]: Analyzing trace with hash 171620424, now seen corresponding path program 2 times [2024-11-22 13:53:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:22,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338712654] [2024-11-22 13:53:22,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:53:22,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:22,219 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:53:22,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:23,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:23,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338712654] [2024-11-22 13:53:23,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338712654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:23,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898268095] [2024-11-22 13:53:23,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:53:23,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:23,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:23,284 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) [2024-11-22 13:53:23,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:53:23,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:53:23,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:23,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 13:53:23,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:23,669 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 11 treesize of output 3 [2024-11-22 13:53:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:23,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:24,094 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:53:24,095 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 24 treesize of output 11 [2024-11-22 13:53:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898268095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:53:24,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:53:24,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 25 [2024-11-22 13:53:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020341025] [2024-11-22 13:53:24,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:53:24,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 13:53:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:24,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 13:53:24,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:53:24,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-22 13:53:24,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 212 flow. Second operand has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 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) [2024-11-22 13:53:24,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:24,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-22 13:53:24,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:31,649 INFO L124 PetriNetUnfolderBase]: 13455/22642 cut-off events. [2024-11-22 13:53:31,650 INFO L125 PetriNetUnfolderBase]: For 14194/14470 co-relation queries the response was YES. [2024-11-22 13:53:31,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57090 conditions, 22642 events. 13455/22642 cut-off events. For 14194/14470 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 168081 event pairs, 853 based on Foata normal form. 1136/23596 useless extension candidates. Maximal degree in co-relation 57076. Up to 3998 conditions per place. [2024-11-22 13:53:31,796 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 691 selfloop transitions, 251 changer transitions 0/952 dead transitions. [2024-11-22 13:53:31,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 952 transitions, 5305 flow [2024-11-22 13:53:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-22 13:53:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-22 13:53:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 1742 transitions. [2024-11-22 13:53:31,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.501150747986191 [2024-11-22 13:53:31,805 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 212 flow. Second operand 79 states and 1742 transitions. [2024-11-22 13:53:31,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 952 transitions, 5305 flow [2024-11-22 13:53:31,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 952 transitions, 5049 flow, removed 125 selfloop flow, removed 3 redundant places. [2024-11-22 13:53:31,837 INFO L231 Difference]: Finished difference. Result has 195 places, 350 transitions, 2686 flow [2024-11-22 13:53:31,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=2686, PETRI_PLACES=195, PETRI_TRANSITIONS=350} [2024-11-22 13:53:31,839 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-11-22 13:53:31,839 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 350 transitions, 2686 flow [2024-11-22 13:53:31,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 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) [2024-11-22 13:53:31,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:31,840 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:31,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:53:32,040 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,SelfDestructingSolverStorable7 [2024-11-22 13:53:32,042 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:32,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2083576190, now seen corresponding path program 1 times [2024-11-22 13:53:32,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732820753] [2024-11-22 13:53:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:32,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:53:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:32,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732820753] [2024-11-22 13:53:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732820753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:32,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:53:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679042552] [2024-11-22 13:53:32,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:32,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:53:32,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:53:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:53:32,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-22 13:53:32,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 350 transitions, 2686 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-22 13:53:32,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:32,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-22 13:53:32,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:35,500 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([712] L88-->L92: Formula: (and (= (+ v_~q2_front~0_73 1) v_~q2_front~0_72) (= (select (select |v_#memory_int#1_82| v_~q2~0.base_71) (+ v_~q2~0.offset_71 (* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_#t~post11#1=|v_thread3Thread1of1ForFork1_#t~post11#1_1|, ~q2_front~0=v_~q2_front~0_72, ~q2~0.base=v_~q2~0.base_71, thread3Thread1of1ForFork1_~k~0#1=|v_thread3Thread1of1ForFork1_~k~0#1_3|, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_#t~mem10#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread3Thread1of1ForFork1_#t~post11#1, ~q2_front~0, thread3Thread1of1ForFork1_~k~0#1][380], [39#L120-4true, 72#true, 26#L92true, Black: 579#(and (= ~q1~0.offset 0) (or (< (+ ~n2~0 ~q2_front~0) (+ 2 ~q2_back~0)) (< ~q2_front~0 1)) (or (not (= 0 ~q2_front~0)) (and (<= ~q2_back~0 0) (or (not (= ~q2_back~0 0)) (= (select (select |#memory_int#1| ~q1~0.base) 0) 1)) (= ~q1_front~0 0)) (< ~n1~0 (+ ~q1_back~0 1))) (or (< 0 (select (select 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0) (<= ~q2_front~0 0)), 745#(<= ~q2_back~0 ~q2_front~0)]) [2024-11-22 13:53:35,502 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2024-11-22 13:53:35,503 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2024-11-22 13:53:35,503 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2024-11-22 13:53:35,503 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2024-11-22 13:53:35,853 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([712] L88-->L92: Formula: (and (= (+ v_~q2_front~0_73 1) v_~q2_front~0_72) (= (select (select |v_#memory_int#1_82| v_~q2~0.base_71) (+ v_~q2~0.offset_71 (* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_#t~post11#1=|v_thread3Thread1of1ForFork1_#t~post11#1_1|, ~q2_front~0=v_~q2_front~0_72, ~q2~0.base=v_~q2~0.base_71, thread3Thread1of1ForFork1_~k~0#1=|v_thread3Thread1of1ForFork1_~k~0#1_3|, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_#t~mem10#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, 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~q1_back~0 1) (< ~n1~0 3)))) (= ~q1~0.offset 0) (or (not (= 0 ~q2_front~0)) (not (= (select (select |#memory_int#1| ~q2~0.base) 0) 0))) (or (< 0 (select (select |#memory_int#1| ~q1~0.base) (* ~q1_front~0 4))) (< ~q1_front~0 0) (< ~q1_back~0 (+ ~q1_front~0 1)) (< ~n1~0 (+ ~q1_back~0 1))) (or (< ~q1_back~0 0) (< ~n1~0 (+ ~q1_back~0 1)) (< 0 |thread2Thread1of1ForFork0_~j~0#1|)) (= ~q2~0.offset 0) (<= ~q2_front~0 0)), 745#(<= ~q2_back~0 ~q2_front~0), 34#L121true]) [2024-11-22 13:53:35,854 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2024-11-22 13:53:35,854 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2024-11-22 13:53:35,855 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2024-11-22 13:53:35,855 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-11-22 13:53:35,867 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([712] L88-->L92: Formula: (and (= (+ v_~q2_front~0_73 1) v_~q2_front~0_72) (= (select (select |v_#memory_int#1_82| v_~q2~0.base_71) (+ v_~q2~0.offset_71 (* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, 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olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2024-11-22 13:53:35,868 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2024-11-22 13:53:35,868 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2024-11-22 13:53:35,868 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-11-22 13:53:36,204 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([712] L88-->L92: Formula: (and (= (+ v_~q2_front~0_73 1) v_~q2_front~0_72) (= (select (select |v_#memory_int#1_82| v_~q2~0.base_71) (+ v_~q2~0.offset_71 (* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_#t~post11#1=|v_thread3Thread1of1ForFork1_#t~post11#1_1|, ~q2_front~0=v_~q2_front~0_72, ~q2~0.base=v_~q2~0.base_71, thread3Thread1of1ForFork1_~k~0#1=|v_thread3Thread1of1ForFork1_~k~0#1_3|, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_#t~mem10#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread3Thread1of1ForFork1_#t~post11#1, ~q2_front~0, thread3Thread1of1ForFork1_~k~0#1][380], [30#L54true, 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|#memory_int#1| ~q2~0.base) 0) 0))) (or (< 0 (select (select |#memory_int#1| ~q1~0.base) (* ~q1_front~0 4))) (< ~q1_front~0 0) (< ~q1_back~0 (+ ~q1_front~0 1)) (< ~n1~0 (+ ~q1_back~0 1))) (or (< ~q1_back~0 0) (< ~n1~0 (+ ~q1_back~0 1)) (< 0 |thread2Thread1of1ForFork0_~j~0#1|)) (= ~q2~0.offset 0) (<= ~q2_front~0 0)), 745#(<= ~q2_back~0 ~q2_front~0), 34#L121true]) [2024-11-22 13:53:36,208 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2024-11-22 13:53:36,209 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2024-11-22 13:53:36,209 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-11-22 13:53:36,209 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2024-11-22 13:53:36,973 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([712] L88-->L92: Formula: (and (= (+ v_~q2_front~0_73 1) v_~q2_front~0_72) (= (select (select |v_#memory_int#1_82| v_~q2~0.base_71) (+ v_~q2~0.offset_71 (* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_#t~post11#1=|v_thread3Thread1of1ForFork1_#t~post11#1_1|, ~q2_front~0=v_~q2_front~0_72, ~q2~0.base=v_~q2~0.base_71, 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olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-11-22 13:53:36,974 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2024-11-22 13:53:36,974 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2024-11-22 13:53:37,302 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([712] L88-->L92: Formula: (and (= (+ v_~q2_front~0_73 1) v_~q2_front~0_72) (= (select (select |v_#memory_int#1_82| v_~q2~0.base_71) (+ v_~q2~0.offset_71 (* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_#t~post11#1=|v_thread3Thread1of1ForFork1_#t~post11#1_1|, ~q2_front~0=v_~q2_front~0_72, ~q2~0.base=v_~q2~0.base_71, thread3Thread1of1ForFork1_~k~0#1=|v_thread3Thread1of1ForFork1_~k~0#1_3|, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_#t~mem10#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread3Thread1of1ForFork1_#t~post11#1, ~q2_front~0, thread3Thread1of1ForFork1_~k~0#1][380], [18#thread2EXITtrue, 72#true, 26#L92true, Black: 579#(and (= ~q1~0.offset 0) (or 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(* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_#t~post11#1=|v_thread3Thread1of1ForFork1_#t~post11#1_1|, ~q2_front~0=v_~q2_front~0_72, ~q2~0.base=v_~q2~0.base_71, thread3Thread1of1ForFork1_~k~0#1=|v_thread3Thread1of1ForFork1_~k~0#1_3|, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_#t~mem10#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread3Thread1of1ForFork1_#t~post11#1, ~q2_front~0, thread3Thread1of1ForFork1_~k~0#1][380], [30#L54true, 18#thread2EXITtrue, 39#L120-4true, 72#true, 26#L92true, Black: 579#(and (= ~q1~0.offset 0) (or (< (+ ~n2~0 ~q2_front~0) (+ 2 ~q2_back~0)) (< ~q2_front~0 1)) (or (not (= 0 ~q2_front~0)) (and (<= ~q2_back~0 0) (or (not (= ~q2_back~0 0)) (= (select (select |#memory_int#1| ~q1~0.base) 0) 1)) (= ~q1_front~0 0)) (< ~n1~0 (+ ~q1_back~0 1))) (or (< 0 (select (select |#memory_int#1| ~q1~0.base) (* ~q1_front~0 4))) (< ~q1_front~0 0) (< ~q1_back~0 (+ ~q1_front~0 1)) (< ~n1~0 (+ ~q1_back~0 1))) (= ~q2~0.offset 0) (or (not (= 0 ~q2_front~0)) (and (<= ~q2_back~0 0) (or (not (= ~q2_back~0 0)) (= |thread2Thread1of1ForFork0_~j~0#1| 1))) (not (= |thread2Thread1of1ForFork0_~j~0#1| (select (select 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|thread2Thread1of1ForFork0_~j~0#1|)) (= ~q2~0.offset 0) (<= ~q2_front~0 0)), Black: 635#(and (or (< ~q1_front~0 0) (= ~q1_back~0 ~q1_front~0) (< ~q1_back~0 ~q1_front~0) (< ~n1~0 (+ ~q1_back~0 2))) (or (not (= 0 ~q2_front~0)) (and (or (and (<= ~q2_back~0 0) (= ~q1_front~0 0)) (not (= ~q1_back~0 0))) (or (< ~q1_back~0 1) (< ~n1~0 3)))) (= ~q1~0.offset 0) (or (not (= 0 ~q2_front~0)) (not (= (select (select |#memory_int#1| ~q2~0.base) 0) 0))) (or (< 0 (select (select |#memory_int#1| ~q1~0.base) (* ~q1_front~0 4))) (< ~q1_front~0 0) (< ~q1_back~0 (+ ~q1_front~0 1)) (< ~n1~0 (+ ~q1_back~0 1))) (or (< ~q1_back~0 0) (< ~n1~0 (+ ~q1_back~0 1)) (< 0 |thread2Thread1of1ForFork0_~j~0#1|)) (= ~q2~0.offset 0) (<= ~q2_front~0 0)), 745#(<= ~q2_back~0 ~q2_front~0)]) [2024-11-22 13:53:37,317 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2024-11-22 13:53:37,317 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-11-22 13:53:37,317 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-11-22 13:53:37,318 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-11-22 13:53:37,508 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([712] L88-->L92: Formula: (and (= (+ v_~q2_front~0_73 1) v_~q2_front~0_72) (= (select (select |v_#memory_int#1_82| v_~q2~0.base_71) (+ v_~q2~0.offset_71 (* 4 v_~q2_front~0_73))) |v_thread3Thread1of1ForFork1_~k~0#1_3|) (not (= (ite (and (< v_~q2_front~0_73 v_~n2~0_80) (< v_~q2_front~0_73 v_~q2_back~0_82) (<= 0 v_~q2_front~0_73)) 1 0) 0))) InVars {~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, ~q2_front~0=v_~q2_front~0_73, ~q2~0.base=v_~q2~0.base_71, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread3Thread1of1ForFork1_#t~mem10#1=|v_thread3Thread1of1ForFork1_#t~mem10#1_1|, ~n2~0=v_~n2~0_80, ~q2~0.offset=v_~q2~0.offset_71, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_#t~post11#1=|v_thread3Thread1of1ForFork1_#t~post11#1_1|, ~q2_front~0=v_~q2_front~0_72, ~q2~0.base=v_~q2~0.base_71, thread3Thread1of1ForFork1_~k~0#1=|v_thread3Thread1of1ForFork1_~k~0#1_3|, #memory_int#1=|v_#memory_int#1_82|, ~q2_back~0=v_~q2_back~0_82} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_#t~mem10#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread3Thread1of1ForFork1_#t~post11#1, ~q2_front~0, thread3Thread1of1ForFork1_~k~0#1][380], [30#L54true, 18#thread2EXITtrue, 72#true, 26#L92true, Black: 579#(and (= ~q1~0.offset 0) (or (< (+ ~n2~0 ~q2_front~0) (+ 2 ~q2_back~0)) (< ~q2_front~0 1)) (or (not (= 0 ~q2_front~0)) (and (<= ~q2_back~0 0) (or 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(= ~q1_back~0 (+ ~q1_front~0 1)) (= ~q2~0.offset 0) (or (not (= 0 ~q2_front~0)) (and (<= ~q2_back~0 0) (or (not (= ~q2_back~0 0)) (= |thread2Thread1of1ForFork0_~j~0#1| 1))) (not (= |thread2Thread1of1ForFork0_~j~0#1| (select (select |#memory_int#1| ~q2~0.base) (* ~q2_back~0 4))))) (or (not (= 0 ~q2_front~0)) (= ~q1_back~0 ~n1~0) (< ~q2_back~0 1)) (<= ~q2_front~0 0) (<= ~n1~0 2)), Black: 571#(and (<= 1 ~q1_back~0) (<= 1 |thread2Thread1of1ForFork0_~j~0#1|) (<= ~q1_back~0 ~n1~0) (= ~q1~0.offset 0) (or (< (+ ~n2~0 ~q2_front~0) (+ 2 ~q2_back~0)) (< ~q2_front~0 1)) (= ~q1_back~0 ~q1_front~0) (= ~q2~0.offset 0) (or (not (= 0 ~q2_front~0)) (and (<= ~q2_back~0 0) (or (not (= ~q2_back~0 0)) (= |thread2Thread1of1ForFork0_~j~0#1| 1))) (= ~q1_back~0 ~n1~0) (not (= |thread2Thread1of1ForFork0_~j~0#1| (select (select |#memory_int#1| ~q2~0.base) (* ~q2_back~0 4))))) (<= ~n1~0 2)), Black: 625#(and (or (< ~q1_front~0 0) (= ~q1_back~0 ~q1_front~0) (< ~q1_back~0 ~q1_front~0) (< ~n1~0 (+ ~q1_back~0 2))) (or 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~q1_back~0 (+ ~q1_front~0 1)) (< ~n1~0 (+ ~q1_back~0 1))) (= ~q2~0.offset 0) (<= ~q2_front~0 0)), Black: 663#(and (or (< ~q1_front~0 0) (= ~q1_back~0 ~q1_front~0) (< ~q1_back~0 ~q1_front~0) (< ~n1~0 (+ ~q1_back~0 2))) (or (not (= 0 ~q2_front~0)) (not (= (select (select |#memory_int#1| ~q2~0.base) 0) 0))) (or (< ~q1_back~0 0) (< ~n1~0 (+ ~q1_back~0 1)) (< 0 |thread2Thread1of1ForFork0_~j~0#1|)) (= ~q2~0.offset 0) (<= ~q2_front~0 0)), Black: 635#(and (or (< ~q1_front~0 0) (= ~q1_back~0 ~q1_front~0) (< ~q1_back~0 ~q1_front~0) (< ~n1~0 (+ ~q1_back~0 2))) (or (not (= 0 ~q2_front~0)) (and (or (and (<= ~q2_back~0 0) (= ~q1_front~0 0)) (not (= ~q1_back~0 0))) (or (< ~q1_back~0 1) (< ~n1~0 3)))) (= ~q1~0.offset 0) (or (not (= 0 ~q2_front~0)) (not (= (select (select |#memory_int#1| ~q2~0.base) 0) 0))) (or (< 0 (select (select |#memory_int#1| ~q1~0.base) (* ~q1_front~0 4))) (< ~q1_front~0 0) (< ~q1_back~0 (+ ~q1_front~0 1)) (< ~n1~0 (+ ~q1_back~0 1))) (or (< ~q1_back~0 0) (< ~n1~0 (+ ~q1_back~0 1)) (< 0 |thread2Thread1of1ForFork0_~j~0#1|)) (= ~q2~0.offset 0) (<= ~q2_front~0 0)), 745#(<= ~q2_back~0 ~q2_front~0), 34#L121true]) [2024-11-22 13:53:37,509 INFO L294 olderBase$Statistics]: this new event has 45 ancestors and is cut-off event [2024-11-22 13:53:37,509 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-11-22 13:53:37,509 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-11-22 13:53:37,509 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2024-11-22 13:53:38,147 INFO L124 PetriNetUnfolderBase]: 19732/36289 cut-off events. [2024-11-22 13:53:38,147 INFO L125 PetriNetUnfolderBase]: For 836023/841016 co-relation queries the response was YES. [2024-11-22 13:53:38,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176378 conditions, 36289 events. 19732/36289 cut-off events. For 836023/841016 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 324014 event pairs, 3676 based on Foata normal form. 693/36173 useless extension candidates. Maximal degree in co-relation 176307. Up to 12337 conditions per place. [2024-11-22 13:53:38,960 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 523 selfloop transitions, 91 changer transitions 0/645 dead transitions. [2024-11-22 13:53:38,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 645 transitions, 6166 flow [2024-11-22 13:53:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:53:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:53:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-22 13:53:38,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-22 13:53:38,961 INFO L175 Difference]: Start difference. First operand has 195 places, 350 transitions, 2686 flow. Second operand 4 states and 116 transitions. [2024-11-22 13:53:38,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 645 transitions, 6166 flow [2024-11-22 13:53:41,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 645 transitions, 5132 flow, removed 512 selfloop flow, removed 4 redundant places. [2024-11-22 13:53:41,911 INFO L231 Difference]: Finished difference. Result has 196 places, 421 transitions, 3262 flow [2024-11-22 13:53:41,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3262, PETRI_PLACES=196, PETRI_TRANSITIONS=421} [2024-11-22 13:53:41,912 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-11-22 13:53:41,912 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 421 transitions, 3262 flow [2024-11-22 13:53:41,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-22 13:53:41,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:41,913 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:41,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:53:41,914 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:41,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1707536914, now seen corresponding path program 3 times [2024-11-22 13:53:41,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:41,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196975759] [2024-11-22 13:53:41,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:53:41,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:41,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:53:41,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196975759] [2024-11-22 13:53:42,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196975759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:42,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705281629] [2024-11-22 13:53:42,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:53:42,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:42,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:42,758 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) [2024-11-22 13:53:42,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:53:42,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:53:42,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:42,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 13:53:42,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:43,164 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:53:43,165 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 23 treesize of output 10 [2024-11-22 13:53:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:43,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:43,375 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:53:43,376 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 25 treesize of output 12 [2024-11-22 13:53:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:43,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705281629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:53:43,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:53:43,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2024-11-22 13:53:43,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001135794] [2024-11-22 13:53:43,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:53:43,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 13:53:43,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 13:53:43,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2024-11-22 13:53:43,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-22 13:53:43,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 421 transitions, 3262 flow. Second operand has 27 states, 27 states have (on average 12.074074074074074) internal successors, (326), 27 states have internal predecessors, (326), 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) [2024-11-22 13:53:43,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:43,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-22 13:53:43,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand