./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:41:31,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:41:31,145 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:41:31,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:41:31,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:41:31,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:41:31,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:41:31,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:41:31,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:41:31,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:41:31,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:41:31,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:41:31,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:41:31,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:41:31,182 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:41:31,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:41:31,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:41:31,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:41:31,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:41:31,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:41:31,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:41:31,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:41:31,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:41:31,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:41:31,186 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:41:31,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:41:31,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:41:31,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:41:31,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:41:31,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:41:31,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:41:31,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:41:31,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:41:31,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:41:31,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:41:31,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:41:31,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:41:31,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:41:31,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:41:31,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:41:31,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:41:31,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:41:31,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-20 09:41:31,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:41:31,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:41:31,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:41:31,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:41:31,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:41:31,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-20 09:41:32,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:41:33,166 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:41:33,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-20 09:41:33,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3798dfb2c/c2a1b373aae04971b9748fd746de1b5f/FLAG752e3e2da [2024-11-20 09:41:33,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3798dfb2c/c2a1b373aae04971b9748fd746de1b5f [2024-11-20 09:41:33,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:41:33,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:41:33,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:41:33,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:41:33,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:41:33,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341de859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33, skipping insertion in model container [2024-11-20 09:41:33,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,575 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:41:33,779 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-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-20 09:41:33,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:41:33,803 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:41:33,827 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-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-20 09:41:33,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:41:33,856 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:41:33,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33 WrapperNode [2024-11-20 09:41:33,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:41:33,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:41:33,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:41:33,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:41:33,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,898 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 182 [2024-11-20 09:41:33,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:41:33,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:41:33,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:41:33,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:41:33,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,929 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-20 09:41:33,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:41:33,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:41:33,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:41:33,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:41:33,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (1/1) ... [2024-11-20 09:41:33,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:41:33,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:33,988 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) [2024-11-20 09:41:33,991 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 [2024-11-20 09:41:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:41:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:41:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:41:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:41:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:41:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:41:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:41:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:41:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:41:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:41:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:41:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:41:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:41:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:41:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:41:34,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:41:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:41:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:41:34,046 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:41:34,179 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:41:34,181 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:41:34,495 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:41:34,495 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:41:34,776 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:41:34,777 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 09:41:34,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:41:34 BoogieIcfgContainer [2024-11-20 09:41:34,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:41:34,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:41:34,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:41:34,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:41:34,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:41:33" (1/3) ... [2024-11-20 09:41:34,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb3d04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:41:34, skipping insertion in model container [2024-11-20 09:41:34,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:41:33" (2/3) ... [2024-11-20 09:41:34,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb3d04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:41:34, skipping insertion in model container [2024-11-20 09:41:34,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:41:34" (3/3) ... [2024-11-20 09:41:34,786 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-20 09:41:34,804 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:41:34,805 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:41:34,805 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:41:34,865 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:41:34,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-20 09:41:34,942 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-20 09:41:34,943 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:41:34,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-20 09:41:34,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-20 09:41:34,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-20 09:41:34,961 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:41:34,967 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;@5aa86c08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:41:34,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:41:34,979 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:41:34,979 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-20 09:41:34,979 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:41:34,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:34,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:41:34,981 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)] === [2024-11-20 09:41:34,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1525046065, now seen corresponding path program 1 times [2024-11-20 09:41:34,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:34,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756668718] [2024-11-20 09:41:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756668718] [2024-11-20 09:41:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756668718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:35,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:35,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:41:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083184388] [2024-11-20 09:41:35,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:35,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:41:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:41:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:41:35,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-20 09:41:35,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-20 09:41:35,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:35,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-20 09:41:35,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:35,679 INFO L124 PetriNetUnfolderBase]: 617/944 cut-off events. [2024-11-20 09:41:35,680 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-20 09:41:35,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 944 events. 617/944 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3732 event pairs, 126 based on Foata normal form. 1/931 useless extension candidates. Maximal degree in co-relation 1705. Up to 677 conditions per place. [2024-11-20 09:41:35,697 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-20 09:41:35,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-20 09:41:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:41:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:41:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-20 09:41:35,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-20 09:41:35,713 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-20 09:41:35,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-20 09:41:35,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:41:35,724 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-20 09:41:35,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-20 09:41:35,730 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-20 09:41:35,732 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-20 09:41:35,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-20 09:41:35,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:35,733 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] [2024-11-20 09:41:35,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:41:35,733 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)] === [2024-11-20 09:41:35,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash -645535589, now seen corresponding path program 1 times [2024-11-20 09:41:35,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:35,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959598462] [2024-11-20 09:41:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:35,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959598462] [2024-11-20 09:41:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959598462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:36,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:41:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843140834] [2024-11-20 09:41:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:36,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:41:36,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:41:36,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:41:36,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-20 09:41:36,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:36,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:36,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-20 09:41:36,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:36,282 INFO L124 PetriNetUnfolderBase]: 1206/1844 cut-off events. [2024-11-20 09:41:36,283 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-11-20 09:41:36,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4166 conditions, 1844 events. 1206/1844 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8676 event pairs, 745 based on Foata normal form. 0/1728 useless extension candidates. Maximal degree in co-relation 1064. Up to 1120 conditions per place. [2024-11-20 09:41:36,295 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 63 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-11-20 09:41:36,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 71 transitions, 334 flow [2024-11-20 09:41:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-20 09:41:36,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-11-20 09:41:36,297 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 5 states and 92 transitions. [2024-11-20 09:41:36,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 71 transitions, 334 flow [2024-11-20 09:41:36,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 71 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:41:36,299 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 122 flow [2024-11-20 09:41:36,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-11-20 09:41:36,300 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-20 09:41:36,300 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 122 flow [2024-11-20 09:41:36,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:36,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:36,301 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] [2024-11-20 09:41:36,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:41:36,301 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)] === [2024-11-20 09:41:36,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:36,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2058810230, now seen corresponding path program 1 times [2024-11-20 09:41:36,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:36,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197002726] [2024-11-20 09:41:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:36,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:36,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197002726] [2024-11-20 09:41:36,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197002726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:36,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:36,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:41:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424760427] [2024-11-20 09:41:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:36,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:41:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:36,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:41:36,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:41:36,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-20 09:41:36,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:36,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:36,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-20 09:41:36,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:36,708 INFO L124 PetriNetUnfolderBase]: 1047/1614 cut-off events. [2024-11-20 09:41:36,709 INFO L125 PetriNetUnfolderBase]: For 681/759 co-relation queries the response was YES. [2024-11-20 09:41:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 1614 events. 1047/1614 cut-off events. For 681/759 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7290 event pairs, 686 based on Foata normal form. 0/1535 useless extension candidates. Maximal degree in co-relation 2745. Up to 1133 conditions per place. [2024-11-20 09:41:36,720 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 56 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-20 09:41:36,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 326 flow [2024-11-20 09:41:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-20 09:41:36,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-20 09:41:36,723 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 122 flow. Second operand 5 states and 87 transitions. [2024-11-20 09:41:36,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 326 flow [2024-11-20 09:41:36,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 322 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:41:36,727 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 143 flow [2024-11-20 09:41:36,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-20 09:41:36,729 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-11-20 09:41:36,729 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 143 flow [2024-11-20 09:41:36,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:36,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:36,730 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] [2024-11-20 09:41:36,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:41:36,730 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)] === [2024-11-20 09:41:36,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:36,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1482252659, now seen corresponding path program 1 times [2024-11-20 09:41:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001029378] [2024-11-20 09:41:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:36,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001029378] [2024-11-20 09:41:36,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001029378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:36,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:36,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:41:36,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372357398] [2024-11-20 09:41:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:36,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:41:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:41:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:41:36,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-20 09:41:36,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:36,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:36,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-20 09:41:36,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:37,079 INFO L124 PetriNetUnfolderBase]: 882/1337 cut-off events. [2024-11-20 09:41:37,079 INFO L125 PetriNetUnfolderBase]: For 773/910 co-relation queries the response was YES. [2024-11-20 09:41:37,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 1337 events. 882/1337 cut-off events. For 773/910 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5563 event pairs, 601 based on Foata normal form. 0/1270 useless extension candidates. Maximal degree in co-relation 2827. Up to 1095 conditions per place. [2024-11-20 09:41:37,089 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 2 changer transitions 23/56 dead transitions. [2024-11-20 09:41:37,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 309 flow [2024-11-20 09:41:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-20 09:41:37,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-11-20 09:41:37,091 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 143 flow. Second operand 5 states and 81 transitions. [2024-11-20 09:41:37,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 309 flow [2024-11-20 09:41:37,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:41:37,095 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 116 flow [2024-11-20 09:41:37,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-20 09:41:37,096 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-20 09:41:37,096 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 116 flow [2024-11-20 09:41:37,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:37,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:37,097 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] [2024-11-20 09:41:37,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:41:37,097 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)] === [2024-11-20 09:41:37,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:37,097 INFO L85 PathProgramCache]: Analyzing trace with hash -447072999, now seen corresponding path program 1 times [2024-11-20 09:41:37,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:37,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421460029] [2024-11-20 09:41:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:37,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:37,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421460029] [2024-11-20 09:41:37,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421460029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736010889] [2024-11-20 09:41:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:37,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:37,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:37,262 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) [2024-11-20 09:41:37,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:41:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:37,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:41:37,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:37,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:37,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736010889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:37,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:37,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-20 09:41:37,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764103464] [2024-11-20 09:41:37,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:37,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 09:41:37,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:37,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 09:41:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:41:37,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:41:37,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 116 flow. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:37,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:37,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:41:37,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:38,336 INFO L124 PetriNetUnfolderBase]: 1504/2184 cut-off events. [2024-11-20 09:41:38,336 INFO L125 PetriNetUnfolderBase]: For 863/1019 co-relation queries the response was YES. [2024-11-20 09:41:38,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5863 conditions, 2184 events. 1504/2184 cut-off events. For 863/1019 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9655 event pairs, 293 based on Foata normal form. 0/1934 useless extension candidates. Maximal degree in co-relation 5844. Up to 666 conditions per place. [2024-11-20 09:41:38,358 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 96 selfloop transitions, 17 changer transitions 0/115 dead transitions. [2024-11-20 09:41:38,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 115 transitions, 617 flow [2024-11-20 09:41:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 09:41:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 09:41:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-11-20 09:41:38,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-11-20 09:41:38,362 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 116 flow. Second operand 11 states and 156 transitions. [2024-11-20 09:41:38,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 115 transitions, 617 flow [2024-11-20 09:41:38,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 115 transitions, 543 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-11-20 09:41:38,377 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 183 flow [2024-11-20 09:41:38,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=183, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-20 09:41:38,381 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-20 09:41:38,382 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 183 flow [2024-11-20 09:41:38,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:38,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:38,382 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] [2024-11-20 09:41:38,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 09:41:38,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:38,584 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)] === [2024-11-20 09:41:38,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1953383277, now seen corresponding path program 2 times [2024-11-20 09:41:38,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:38,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885904215] [2024-11-20 09:41:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:38,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:38,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:38,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885904215] [2024-11-20 09:41:38,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885904215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861681442] [2024-11-20 09:41:38,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:41:38,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:38,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:38,764 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) [2024-11-20 09:41:38,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:41:38,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:41:38,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:38,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:41:38,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:38,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861681442] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:39,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:41:39,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-20 09:41:39,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290815002] [2024-11-20 09:41:39,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:39,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:41:39,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:41:39,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:41:39,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:41:39,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-20 09:41:39,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:39,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:41:39,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:39,494 INFO L124 PetriNetUnfolderBase]: 1884/2736 cut-off events. [2024-11-20 09:41:39,495 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-11-20 09:41:39,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 2736 events. 1884/2736 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12324 event pairs, 283 based on Foata normal form. 14/2749 useless extension candidates. Maximal degree in co-relation 7453. Up to 745 conditions per place. [2024-11-20 09:41:39,511 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 87 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2024-11-20 09:41:39,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 118 transitions, 675 flow [2024-11-20 09:41:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:41:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:41:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-11-20 09:41:39,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-11-20 09:41:39,513 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 183 flow. Second operand 9 states and 130 transitions. [2024-11-20 09:41:39,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 118 transitions, 675 flow [2024-11-20 09:41:39,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 118 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:41:39,522 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 393 flow [2024-11-20 09:41:39,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2024-11-20 09:41:39,523 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2024-11-20 09:41:39,523 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 393 flow [2024-11-20 09:41:39,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-20 09:41:39,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:39,524 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] [2024-11-20 09:41:39,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:41:39,724 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,SelfDestructingSolverStorable5 [2024-11-20 09:41:39,726 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)] === [2024-11-20 09:41:39,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:39,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2081588191, now seen corresponding path program 3 times [2024-11-20 09:41:39,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:39,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750452523] [2024-11-20 09:41:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:39,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:39,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750452523] [2024-11-20 09:41:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750452523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711388502] [2024-11-20 09:41:39,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:41:39,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:39,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:39,862 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) [2024-11-20 09:41:39,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:41:39,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 09:41:39,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:39,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:41:39,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:40,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:40,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711388502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:40,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:40,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-11-20 09:41:40,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193390740] [2024-11-20 09:41:40,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:40,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 09:41:40,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:40,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 09:41:40,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-20 09:41:40,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:41:40,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 393 flow. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 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) [2024-11-20 09:41:40,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:40,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:41:40,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:41,006 INFO L124 PetriNetUnfolderBase]: 2771/3992 cut-off events. [2024-11-20 09:41:41,007 INFO L125 PetriNetUnfolderBase]: For 7019/7019 co-relation queries the response was YES. [2024-11-20 09:41:41,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13901 conditions, 3992 events. 2771/3992 cut-off events. For 7019/7019 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19032 event pairs, 479 based on Foata normal form. 16/4007 useless extension candidates. Maximal degree in co-relation 13870. Up to 1231 conditions per place. [2024-11-20 09:41:41,039 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 134 selfloop transitions, 62 changer transitions 0/198 dead transitions. [2024-11-20 09:41:41,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 198 transitions, 1403 flow [2024-11-20 09:41:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 09:41:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 09:41:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 212 transitions. [2024-11-20 09:41:41,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2024-11-20 09:41:41,042 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 393 flow. Second operand 14 states and 212 transitions. [2024-11-20 09:41:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 198 transitions, 1403 flow [2024-11-20 09:41:41,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 198 transitions, 1376 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-20 09:41:41,141 INFO L231 Difference]: Finished difference. Result has 77 places, 97 transitions, 886 flow [2024-11-20 09:41:41,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=886, PETRI_PLACES=77, PETRI_TRANSITIONS=97} [2024-11-20 09:41:41,142 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 42 predicate places. [2024-11-20 09:41:41,142 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 97 transitions, 886 flow [2024-11-20 09:41:41,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 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) [2024-11-20 09:41:41,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:41,143 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] [2024-11-20 09:41:41,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 09:41:41,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:41,344 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)] === [2024-11-20 09:41:41,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -233791729, now seen corresponding path program 4 times [2024-11-20 09:41:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:41,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894879638] [2024-11-20 09:41:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894879638] [2024-11-20 09:41:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894879638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062001483] [2024-11-20 09:41:41,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:41:41,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:41,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:41,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:41,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:41:41,561 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:41:41,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:41,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:41:41,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:41,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062001483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:41,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-20 09:41:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570983488] [2024-11-20 09:41:41,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:41,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 09:41:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 09:41:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:41:41,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-20 09:41:41,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 97 transitions, 886 flow. Second operand has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-20 09:41:41,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:41,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-20 09:41:41,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:43,450 INFO L124 PetriNetUnfolderBase]: 4160/5958 cut-off events. [2024-11-20 09:41:43,451 INFO L125 PetriNetUnfolderBase]: For 20217/20217 co-relation queries the response was YES. [2024-11-20 09:41:43,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24154 conditions, 5958 events. 4160/5958 cut-off events. For 20217/20217 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 29010 event pairs, 256 based on Foata normal form. 20/5632 useless extension candidates. Maximal degree in co-relation 24114. Up to 1202 conditions per place. [2024-11-20 09:41:43,499 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 219 selfloop transitions, 163 changer transitions 0/383 dead transitions. [2024-11-20 09:41:43,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 383 transitions, 3543 flow [2024-11-20 09:41:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 09:41:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-20 09:41:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 347 transitions. [2024-11-20 09:41:43,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40442890442890445 [2024-11-20 09:41:43,501 INFO L175 Difference]: Start difference. First operand has 77 places, 97 transitions, 886 flow. Second operand 26 states and 347 transitions. [2024-11-20 09:41:43,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 383 transitions, 3543 flow [2024-11-20 09:41:43,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 383 transitions, 3368 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-11-20 09:41:43,663 INFO L231 Difference]: Finished difference. Result has 107 places, 208 transitions, 2311 flow [2024-11-20 09:41:43,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2311, PETRI_PLACES=107, PETRI_TRANSITIONS=208} [2024-11-20 09:41:43,665 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 72 predicate places. [2024-11-20 09:41:43,667 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 208 transitions, 2311 flow [2024-11-20 09:41:43,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-20 09:41:43,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:43,667 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] [2024-11-20 09:41:43,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 09:41:43,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:43,868 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)] === [2024-11-20 09:41:43,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash 866783843, now seen corresponding path program 5 times [2024-11-20 09:41:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:43,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755313043] [2024-11-20 09:41:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:43,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:44,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:44,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755313043] [2024-11-20 09:41:44,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755313043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:44,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176848900] [2024-11-20 09:41:44,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:41:44,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:44,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:44,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:41:44,098 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:41:44,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:44,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:41:44,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:44,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176848900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:44,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 09:41:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758061817] [2024-11-20 09:41:44,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:44,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 09:41:44,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 09:41:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-20 09:41:44,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-20 09:41:44,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 208 transitions, 2311 flow. Second operand has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 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) [2024-11-20 09:41:44,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:44,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-20 09:41:44,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:45,815 INFO L124 PetriNetUnfolderBase]: 4609/6582 cut-off events. [2024-11-20 09:41:45,815 INFO L125 PetriNetUnfolderBase]: For 27391/27391 co-relation queries the response was YES. [2024-11-20 09:41:45,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29739 conditions, 6582 events. 4609/6582 cut-off events. For 27391/27391 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 32306 event pairs, 394 based on Foata normal form. 18/6600 useless extension candidates. Maximal degree in co-relation 29688. Up to 1340 conditions per place. [2024-11-20 09:41:45,887 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 204 selfloop transitions, 227 changer transitions 0/432 dead transitions. [2024-11-20 09:41:45,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 432 transitions, 4446 flow [2024-11-20 09:41:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 09:41:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-20 09:41:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 303 transitions. [2024-11-20 09:41:45,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41735537190082644 [2024-11-20 09:41:45,890 INFO L175 Difference]: Start difference. First operand has 107 places, 208 transitions, 2311 flow. Second operand 22 states and 303 transitions. [2024-11-20 09:41:45,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 432 transitions, 4446 flow [2024-11-20 09:41:46,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 432 transitions, 4327 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-11-20 09:41:46,152 INFO L231 Difference]: Finished difference. Result has 130 places, 307 transitions, 3677 flow [2024-11-20 09:41:46,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3677, PETRI_PLACES=130, PETRI_TRANSITIONS=307} [2024-11-20 09:41:46,153 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 95 predicate places. [2024-11-20 09:41:46,153 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 307 transitions, 3677 flow [2024-11-20 09:41:46,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 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) [2024-11-20 09:41:46,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:46,154 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] [2024-11-20 09:41:46,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 09:41:46,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:46,355 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)] === [2024-11-20 09:41:46,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash 471698421, now seen corresponding path program 6 times [2024-11-20 09:41:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972232796] [2024-11-20 09:41:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:46,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972232796] [2024-11-20 09:41:46,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972232796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914916242] [2024-11-20 09:41:46,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:41:46,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:46,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:46,487 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:46,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:41:46,566 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 09:41:46,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:46,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:41:46,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:46,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:46,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914916242] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:46,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:41:46,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2024-11-20 09:41:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899870089] [2024-11-20 09:41:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:46,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:41:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:41:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-20 09:41:46,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:41:46,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 307 transitions, 3677 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-20 09:41:46,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:46,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:41:46,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:47,579 INFO L124 PetriNetUnfolderBase]: 3675/5269 cut-off events. [2024-11-20 09:41:47,579 INFO L125 PetriNetUnfolderBase]: For 30905/30905 co-relation queries the response was YES. [2024-11-20 09:41:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26446 conditions, 5269 events. 3675/5269 cut-off events. For 30905/30905 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 26115 event pairs, 326 based on Foata normal form. 14/5282 useless extension candidates. Maximal degree in co-relation 26389. Up to 1705 conditions per place. [2024-11-20 09:41:47,619 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 194 selfloop transitions, 150 changer transitions 0/346 dead transitions. [2024-11-20 09:41:47,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 346 transitions, 4510 flow [2024-11-20 09:41:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:41:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:41:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-11-20 09:41:47,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-20 09:41:47,623 INFO L175 Difference]: Start difference. First operand has 130 places, 307 transitions, 3677 flow. Second operand 8 states and 121 transitions. [2024-11-20 09:41:47,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 346 transitions, 4510 flow [2024-11-20 09:41:47,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 346 transitions, 4345 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-11-20 09:41:47,856 INFO L231 Difference]: Finished difference. Result has 133 places, 307 transitions, 3866 flow [2024-11-20 09:41:47,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3866, PETRI_PLACES=133, PETRI_TRANSITIONS=307} [2024-11-20 09:41:47,857 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 98 predicate places. [2024-11-20 09:41:47,857 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 307 transitions, 3866 flow [2024-11-20 09:41:47,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-20 09:41:47,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:47,857 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] [2024-11-20 09:41:47,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 09:41:48,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:48,058 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:41:48,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1419396537, now seen corresponding path program 1 times [2024-11-20 09:41:48,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:48,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116862631] [2024-11-20 09:41:48,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:48,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:48,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116862631] [2024-11-20 09:41:48,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116862631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479111476] [2024-11-20 09:41:48,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:48,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:48,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:48,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:48,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:41:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:48,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:41:48,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:48,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:48,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479111476] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:48,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:41:48,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-20 09:41:48,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272083460] [2024-11-20 09:41:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:48,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:41:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:41:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 09:41:48,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-20 09:41:48,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 307 transitions, 3866 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:48,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:48,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-20 09:41:48,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:49,101 INFO L124 PetriNetUnfolderBase]: 4201/6161 cut-off events. [2024-11-20 09:41:49,101 INFO L125 PetriNetUnfolderBase]: For 47823/48171 co-relation queries the response was YES. [2024-11-20 09:41:49,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31334 conditions, 6161 events. 4201/6161 cut-off events. For 47823/48171 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32442 event pairs, 1105 based on Foata normal form. 452/6512 useless extension candidates. Maximal degree in co-relation 31278. Up to 2895 conditions per place. [2024-11-20 09:41:49,261 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 281 selfloop transitions, 43 changer transitions 0/389 dead transitions. [2024-11-20 09:41:49,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 389 transitions, 5674 flow [2024-11-20 09:41:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-20 09:41:49,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-20 09:41:49,269 INFO L175 Difference]: Start difference. First operand has 133 places, 307 transitions, 3866 flow. Second operand 5 states and 72 transitions. [2024-11-20 09:41:49,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 389 transitions, 5674 flow [2024-11-20 09:41:49,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 389 transitions, 5525 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-20 09:41:49,491 INFO L231 Difference]: Finished difference. Result has 135 places, 308 transitions, 4005 flow [2024-11-20 09:41:49,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3754, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4005, PETRI_PLACES=135, PETRI_TRANSITIONS=308} [2024-11-20 09:41:49,492 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 100 predicate places. [2024-11-20 09:41:49,492 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 308 transitions, 4005 flow [2024-11-20 09:41:49,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-20 09:41:49,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:49,493 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] [2024-11-20 09:41:49,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 09:41:49,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:49,697 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:41:49,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1502800228, now seen corresponding path program 1 times [2024-11-20 09:41:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:49,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447866634] [2024-11-20 09:41:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:50,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:50,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447866634] [2024-11-20 09:41:50,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447866634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:50,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985729444] [2024-11-20 09:41:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:50,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:50,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:50,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:50,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 09:41:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:50,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 09:41:50,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:50,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 09:41:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:50,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:50,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:41:50,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 09:41:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:50,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985729444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:50,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:50,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 17 [2024-11-20 09:41:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987910183] [2024-11-20 09:41:50,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:50,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 09:41:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 09:41:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-20 09:41:50,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-20 09:41:50,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 308 transitions, 4005 flow. Second operand has 18 states, 18 states have (on average 9.944444444444445) internal successors, (179), 18 states have internal predecessors, (179), 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) [2024-11-20 09:41:50,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:50,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-20 09:41:50,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:51,790 INFO L124 PetriNetUnfolderBase]: 4387/6593 cut-off events. [2024-11-20 09:41:51,790 INFO L125 PetriNetUnfolderBase]: For 48163/48419 co-relation queries the response was YES. [2024-11-20 09:41:51,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34944 conditions, 6593 events. 4387/6593 cut-off events. For 48163/48419 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 36922 event pairs, 343 based on Foata normal form. 129/6665 useless extension candidates. Maximal degree in co-relation 34886. Up to 4624 conditions per place. [2024-11-20 09:41:51,853 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 426 selfloop transitions, 135 changer transitions 1/629 dead transitions. [2024-11-20 09:41:51,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 629 transitions, 8656 flow [2024-11-20 09:41:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 09:41:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 09:41:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 260 transitions. [2024-11-20 09:41:51,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-11-20 09:41:51,855 INFO L175 Difference]: Start difference. First operand has 135 places, 308 transitions, 4005 flow. Second operand 16 states and 260 transitions. [2024-11-20 09:41:51,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 629 transitions, 8656 flow [2024-11-20 09:41:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 629 transitions, 8588 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 09:41:52,093 INFO L231 Difference]: Finished difference. Result has 151 places, 433 transitions, 6041 flow [2024-11-20 09:41:52,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3961, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6041, PETRI_PLACES=151, PETRI_TRANSITIONS=433} [2024-11-20 09:41:52,093 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 116 predicate places. [2024-11-20 09:41:52,094 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 433 transitions, 6041 flow [2024-11-20 09:41:52,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.944444444444445) internal successors, (179), 18 states have internal predecessors, (179), 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) [2024-11-20 09:41:52,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:52,095 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] [2024-11-20 09:41:52,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 09:41:52,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 09:41:52,296 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:41:52,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:52,296 INFO L85 PathProgramCache]: Analyzing trace with hash 828887727, now seen corresponding path program 1 times [2024-11-20 09:41:52,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:52,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127395775] [2024-11-20 09:41:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:52,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:52,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127395775] [2024-11-20 09:41:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127395775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:52,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99977510] [2024-11-20 09:41:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:52,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:52,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:52,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 09:41:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:52,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 09:41:52,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:52,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 09:41:53,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 09:41:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:53,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:53,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99977510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:53,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:53,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-11-20 09:41:53,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295177546] [2024-11-20 09:41:53,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:53,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 09:41:53,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:53,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 09:41:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2024-11-20 09:41:53,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:41:53,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 433 transitions, 6041 flow. Second operand has 25 states, 25 states have (on average 7.56) internal successors, (189), 25 states have internal predecessors, (189), 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) [2024-11-20 09:41:53,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:53,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:41:53,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:56,810 INFO L124 PetriNetUnfolderBase]: 8449/12341 cut-off events. [2024-11-20 09:41:56,810 INFO L125 PetriNetUnfolderBase]: For 77037/77037 co-relation queries the response was YES. [2024-11-20 09:41:56,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67128 conditions, 12341 events. 8449/12341 cut-off events. For 77037/77037 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 71118 event pairs, 396 based on Foata normal form. 2/12343 useless extension candidates. Maximal degree in co-relation 65044. Up to 7751 conditions per place. [2024-11-20 09:41:56,921 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 982 selfloop transitions, 350 changer transitions 2/1337 dead transitions. [2024-11-20 09:41:56,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1337 transitions, 18950 flow [2024-11-20 09:41:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-20 09:41:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-20 09:41:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 534 transitions. [2024-11-20 09:41:56,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-11-20 09:41:56,924 INFO L175 Difference]: Start difference. First operand has 151 places, 433 transitions, 6041 flow. Second operand 38 states and 534 transitions. [2024-11-20 09:41:56,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1337 transitions, 18950 flow [2024-11-20 09:41:57,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 1337 transitions, 18727 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-11-20 09:41:57,685 INFO L231 Difference]: Finished difference. Result has 203 places, 762 transitions, 11158 flow [2024-11-20 09:41:57,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5981, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11158, PETRI_PLACES=203, PETRI_TRANSITIONS=762} [2024-11-20 09:41:57,686 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 168 predicate places. [2024-11-20 09:41:57,686 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 762 transitions, 11158 flow [2024-11-20 09:41:57,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.56) internal successors, (189), 25 states have internal predecessors, (189), 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) [2024-11-20 09:41:57,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:57,686 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] [2024-11-20 09:41:57,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 09:41:57,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 09:41:57,887 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:41:57,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2013824915, now seen corresponding path program 2 times [2024-11-20 09:41:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336945211] [2024-11-20 09:41:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:57,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:58,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336945211] [2024-11-20 09:41:58,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336945211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313188182] [2024-11-20 09:41:58,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:41:58,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:58,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:58,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:58,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 09:41:58,684 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:41:58,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:58,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 09:41:58,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:58,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 09:41:58,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:41:58,989 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 17 treesize of output 15 [2024-11-20 09:41:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:59,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:59,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313188182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:59,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:59,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 25 [2024-11-20 09:41:59,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779373825] [2024-11-20 09:41:59,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:59,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 09:41:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:59,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 09:41:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-20 09:41:59,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:41:59,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 762 transitions, 11158 flow. Second operand has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 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) [2024-11-20 09:41:59,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:59,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:41:59,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:03,686 INFO L124 PetriNetUnfolderBase]: 11603/17041 cut-off events. [2024-11-20 09:42:03,686 INFO L125 PetriNetUnfolderBase]: For 132998/132998 co-relation queries the response was YES. [2024-11-20 09:42:03,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100534 conditions, 17041 events. 11603/17041 cut-off events. For 132998/132998 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 104670 event pairs, 717 based on Foata normal form. 2/17043 useless extension candidates. Maximal degree in co-relation 99346. Up to 10764 conditions per place. [2024-11-20 09:42:03,871 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 1139 selfloop transitions, 524 changer transitions 2/1668 dead transitions. [2024-11-20 09:42:03,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1668 transitions, 26015 flow [2024-11-20 09:42:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-20 09:42:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-20 09:42:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 563 transitions. [2024-11-20 09:42:03,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4062049062049062 [2024-11-20 09:42:03,874 INFO L175 Difference]: Start difference. First operand has 203 places, 762 transitions, 11158 flow. Second operand 42 states and 563 transitions. [2024-11-20 09:42:03,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1668 transitions, 26015 flow [2024-11-20 09:42:06,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1668 transitions, 25980 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-20 09:42:06,323 INFO L231 Difference]: Finished difference. Result has 266 places, 1068 transitions, 17315 flow [2024-11-20 09:42:06,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11123, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=17315, PETRI_PLACES=266, PETRI_TRANSITIONS=1068} [2024-11-20 09:42:06,324 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 231 predicate places. [2024-11-20 09:42:06,325 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 1068 transitions, 17315 flow [2024-11-20 09:42:06,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 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) [2024-11-20 09:42:06,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:06,325 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] [2024-11-20 09:42:06,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 09:42:06,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 09:42:06,526 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:06,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1154506346, now seen corresponding path program 2 times [2024-11-20 09:42:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:06,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421517483] [2024-11-20 09:42:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:06,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421517483] [2024-11-20 09:42:06,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421517483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:42:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742638455] [2024-11-20 09:42:06,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:42:06,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:42:06,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:42:06,980 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:42:06,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 09:42:07,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:42:07,059 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:42:07,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 09:42:07,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:42:07,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 09:42:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:07,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:42:07,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:42:07,209 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 16 [2024-11-20 09:42:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:07,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742638455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:42:07,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:42:07,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 12 [2024-11-20 09:42:07,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178541792] [2024-11-20 09:42:07,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:42:07,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:42:07,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:42:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:42:07,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-20 09:42:07,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1068 transitions, 17315 flow. Second operand has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 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) [2024-11-20 09:42:07,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:07,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-20 09:42:07,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:11,378 INFO L124 PetriNetUnfolderBase]: 10885/16544 cut-off events. [2024-11-20 09:42:11,378 INFO L125 PetriNetUnfolderBase]: For 196944/197622 co-relation queries the response was YES. [2024-11-20 09:42:11,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112063 conditions, 16544 events. 10885/16544 cut-off events. For 196944/197622 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 109314 event pairs, 775 based on Foata normal form. 242/16640 useless extension candidates. Maximal degree in co-relation 111489. Up to 12806 conditions per place. [2024-11-20 09:42:11,718 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 851 selfloop transitions, 195 changer transitions 1/1299 dead transitions. [2024-11-20 09:42:11,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1299 transitions, 22875 flow [2024-11-20 09:42:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 09:42:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 09:42:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-11-20 09:42:11,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-20 09:42:11,720 INFO L175 Difference]: Start difference. First operand has 266 places, 1068 transitions, 17315 flow. Second operand 12 states and 192 transitions. [2024-11-20 09:42:11,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1299 transitions, 22875 flow [2024-11-20 09:42:14,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1299 transitions, 22104 flow, removed 183 selfloop flow, removed 11 redundant places. [2024-11-20 09:42:14,837 INFO L231 Difference]: Finished difference. Result has 270 places, 1139 transitions, 18267 flow [2024-11-20 09:42:14,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=16640, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=18267, PETRI_PLACES=270, PETRI_TRANSITIONS=1139} [2024-11-20 09:42:14,838 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 235 predicate places. [2024-11-20 09:42:14,838 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 1139 transitions, 18267 flow [2024-11-20 09:42:14,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 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) [2024-11-20 09:42:14,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:14,838 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] [2024-11-20 09:42:14,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 09:42:15,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 09:42:15,039 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:15,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 395726395, now seen corresponding path program 3 times [2024-11-20 09:42:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:15,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681430153] [2024-11-20 09:42:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:15,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:15,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681430153] [2024-11-20 09:42:15,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681430153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:42:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92726477] [2024-11-20 09:42:15,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:42:15,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:42:15,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:42:15,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:42:15,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 09:42:15,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 09:42:15,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:42:15,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 09:42:15,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:42:15,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 09:42:15,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:42:15,855 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 17 treesize of output 15 [2024-11-20 09:42:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:15,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:42:16,090 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 34 treesize of output 30 [2024-11-20 09:42:16,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:42:16,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 80 treesize of output 70 [2024-11-20 09:42:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92726477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:42:16,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:42:16,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-20 09:42:16,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811057895] [2024-11-20 09:42:16,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:42:16,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 09:42:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:16,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 09:42:16,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-11-20 09:42:16,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:42:16,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1139 transitions, 18267 flow. Second operand has 26 states, 26 states have (on average 7.538461538461538) internal successors, (196), 26 states have internal predecessors, (196), 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) [2024-11-20 09:42:16,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:16,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:42:16,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:24,759 INFO L124 PetriNetUnfolderBase]: 21328/30752 cut-off events. [2024-11-20 09:42:24,759 INFO L125 PetriNetUnfolderBase]: For 366321/366923 co-relation queries the response was YES. [2024-11-20 09:42:25,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208038 conditions, 30752 events. 21328/30752 cut-off events. For 366321/366923 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 197097 event pairs, 1180 based on Foata normal form. 231/30857 useless extension candidates. Maximal degree in co-relation 207345. Up to 15555 conditions per place. [2024-11-20 09:42:25,500 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 1171 selfloop transitions, 748 changer transitions 6/2102 dead transitions. [2024-11-20 09:42:25,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 2102 transitions, 35401 flow [2024-11-20 09:42:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-20 09:42:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-20 09:42:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 368 transitions. [2024-11-20 09:42:25,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44606060606060605 [2024-11-20 09:42:25,502 INFO L175 Difference]: Start difference. First operand has 270 places, 1139 transitions, 18267 flow. Second operand 25 states and 368 transitions. [2024-11-20 09:42:25,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 2102 transitions, 35401 flow [2024-11-20 09:42:33,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 2102 transitions, 35132 flow, removed 99 selfloop flow, removed 3 redundant places. [2024-11-20 09:42:33,451 INFO L231 Difference]: Finished difference. Result has 299 places, 1600 transitions, 26854 flow [2024-11-20 09:42:33,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=18088, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=26854, PETRI_PLACES=299, PETRI_TRANSITIONS=1600} [2024-11-20 09:42:33,453 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 264 predicate places. [2024-11-20 09:42:33,453 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 1600 transitions, 26854 flow [2024-11-20 09:42:33,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.538461538461538) internal successors, (196), 26 states have internal predecessors, (196), 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) [2024-11-20 09:42:33,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:33,454 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] [2024-11-20 09:42:33,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 09:42:33,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 09:42:33,654 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:33,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash 643081185, now seen corresponding path program 4 times [2024-11-20 09:42:33,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909760642] [2024-11-20 09:42:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:34,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909760642] [2024-11-20 09:42:34,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909760642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:42:34,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626375669] [2024-11-20 09:42:34,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:42:34,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:42:34,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:42:34,054 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:42:34,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 09:42:34,131 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:42:34,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:42:34,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 09:42:34,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:42:34,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 09:42:34,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 09:42:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:34,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:42:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:34,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626375669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:42:34,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:42:34,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 25 [2024-11-20 09:42:34,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859011231] [2024-11-20 09:42:34,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:42:34,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 09:42:34,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 09:42:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-20 09:42:34,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-20 09:42:34,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1600 transitions, 26854 flow. Second operand has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 26 states have internal predecessors, (189), 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) [2024-11-20 09:42:34,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:34,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-20 09:42:34,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:45,512 INFO L124 PetriNetUnfolderBase]: 20765/30580 cut-off events. [2024-11-20 09:42:45,512 INFO L125 PetriNetUnfolderBase]: For 431057/431057 co-relation queries the response was YES. [2024-11-20 09:42:45,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227528 conditions, 30580 events. 20765/30580 cut-off events. For 431057/431057 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 205396 event pairs, 1333 based on Foata normal form. 1/30581 useless extension candidates. Maximal degree in co-relation 226848. Up to 24353 conditions per place. [2024-11-20 09:42:46,100 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 1561 selfloop transitions, 747 changer transitions 1/2312 dead transitions. [2024-11-20 09:42:46,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 2312 transitions, 42276 flow [2024-11-20 09:42:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-20 09:42:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-20 09:42:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 492 transitions. [2024-11-20 09:42:46,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2024-11-20 09:42:46,102 INFO L175 Difference]: Start difference. First operand has 299 places, 1600 transitions, 26854 flow. Second operand 38 states and 492 transitions. [2024-11-20 09:42:46,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 2312 transitions, 42276 flow [2024-11-20 09:42:55,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 2312 transitions, 42057 flow, removed 107 selfloop flow, removed 2 redundant places. [2024-11-20 09:42:55,172 INFO L231 Difference]: Finished difference. Result has 345 places, 1939 transitions, 34454 flow [2024-11-20 09:42:55,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=26683, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=980, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=34454, PETRI_PLACES=345, PETRI_TRANSITIONS=1939} [2024-11-20 09:42:55,174 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 310 predicate places. [2024-11-20 09:42:55,174 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 1939 transitions, 34454 flow [2024-11-20 09:42:55,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 26 states have internal predecessors, (189), 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) [2024-11-20 09:42:55,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:55,175 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] [2024-11-20 09:42:55,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 09:42:55,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 09:42:55,375 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:55,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash 763011246, now seen corresponding path program 3 times [2024-11-20 09:42:55,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:55,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570575683] [2024-11-20 09:42:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:55,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570575683] [2024-11-20 09:42:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570575683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:42:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414552547] [2024-11-20 09:42:55,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:42:55,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:42:55,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:42:55,710 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:42:55,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 09:42:55,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 09:42:55,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:42:55,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 09:42:55,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:42:55,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 09:42:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:55,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:42:55,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:42:55,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 09:42:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414552547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:42:55,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:42:55,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 17 [2024-11-20 09:42:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017336340] [2024-11-20 09:42:55,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:42:55,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 09:42:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 09:42:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-20 09:42:55,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-20 09:42:55,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1939 transitions, 34454 flow. Second operand has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 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) [2024-11-20 09:42:55,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:55,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-20 09:42:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand