./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:21:52,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:21:52,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:21:52,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:21:52,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:21:52,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:21:52,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:21:52,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:21:52,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:21:52,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:21:52,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:21:52,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:21:52,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:21:52,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:21:52,182 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:21:52,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:21:52,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:21:52,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:21:52,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:21:52,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:21:52,183 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:21:52,183 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:21:52,184 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:21:52,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:21:52,187 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:21:52,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:21:52,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:21:52,188 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:21:52,188 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:21:52,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:21:52,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:21:52,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:21:52,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:21:52,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:21:52,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:21:52,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:21:52,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:21:52,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:21:52,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:21:52,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:21:52,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:21:52,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:21:52,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2024-11-09 10:21:52,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:21:52,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:21:52,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:21:52,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:21:52,408 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:21:52,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-1.i [2024-11-09 10:21:53,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:21:53,790 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:21:53,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i [2024-11-09 10:21:53,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ca19872/5db32aa240944bf09d93d478127e3530/FLAGfe324f5fd [2024-11-09 10:21:53,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ca19872/5db32aa240944bf09d93d478127e3530 [2024-11-09 10:21:53,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:21:53,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:21:53,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:21:53,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:21:53,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:21:53,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:21:53" (1/1) ... [2024-11-09 10:21:53,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a94739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:53, skipping insertion in model container [2024-11-09 10:21:53,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:21:53" (1/1) ... [2024-11-09 10:21:53,862 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:21:54,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:21:54,300 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:21:54,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:21:54,414 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:21:54,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54 WrapperNode [2024-11-09 10:21:54,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:21:54,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:21:54,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:21:54,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:21:54,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,464 INFO L138 Inliner]: procedures = 277, calls = 36, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 154 [2024-11-09 10:21:54,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:21:54,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:21:54,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:21:54,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:21:54,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,479 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,497 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2024-11-09 10:21:54,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:21:54,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:21:54,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:21:54,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:21:54,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (1/1) ... [2024-11-09 10:21:54,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:21:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:21:54,551 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) [2024-11-09 10:21:54,553 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 [2024-11-09 10:21:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 10:21:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 10:21:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 10:21:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:21:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:21:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:21:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:21:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:21:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:21:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:21:54,586 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:21:54,696 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:21:54,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:21:54,884 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:21:54,885 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:21:55,007 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:21:55,009 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:21:55,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:21:55 BoogieIcfgContainer [2024-11-09 10:21:55,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:21:55,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:21:55,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:21:55,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:21:55,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:21:53" (1/3) ... [2024-11-09 10:21:55,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6987c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:21:55, skipping insertion in model container [2024-11-09 10:21:55,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:54" (2/3) ... [2024-11-09 10:21:55,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6987c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:21:55, skipping insertion in model container [2024-11-09 10:21:55,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:21:55" (3/3) ... [2024-11-09 10:21:55,017 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2024-11-09 10:21:55,028 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:21:55,029 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-09 10:21:55,029 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:21:55,077 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:21:55,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 122 flow [2024-11-09 10:21:55,134 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-11-09 10:21:55,138 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:21:55,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 9/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-09 10:21:55,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 122 flow [2024-11-09 10:21:55,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 51 transitions, 114 flow [2024-11-09 10:21:55,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:21:55,161 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=None, 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;@52434846, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:21:55,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-09 10:21:55,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:21:55,169 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-09 10:21:55,169 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:21:55,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:55,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:55,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:55,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash 686360153, now seen corresponding path program 1 times [2024-11-09 10:21:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:55,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393675782] [2024-11-09 10:21:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393675782] [2024-11-09 10:21:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393675782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:55,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:55,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757949941] [2024-11-09 10:21:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:55,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:55,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:55,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:21:55,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 10:21:55,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:55,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:21:55,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:55,762 INFO L124 PetriNetUnfolderBase]: 459/866 cut-off events. [2024-11-09 10:21:55,763 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-09 10:21:55,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 866 events. 459/866 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4349 event pairs, 245 based on Foata normal form. 94/832 useless extension candidates. Maximal degree in co-relation 1560. Up to 520 conditions per place. [2024-11-09 10:21:55,769 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-11-09 10:21:55,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 225 flow [2024-11-09 10:21:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-09 10:21:55,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-09 10:21:55,782 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 114 flow. Second operand 4 states and 113 transitions. [2024-11-09 10:21:55,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 225 flow [2024-11-09 10:21:55,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 215 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:21:55,787 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 98 flow [2024-11-09 10:21:55,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-09 10:21:55,793 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-09 10:21:55,794 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 98 flow [2024-11-09 10:21:55,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 10:21:55,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:55,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:55,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:21:55,795 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:55,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:55,796 INFO L85 PathProgramCache]: Analyzing trace with hash 686360154, now seen corresponding path program 1 times [2024-11-09 10:21:55,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:55,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590999747] [2024-11-09 10:21:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:55,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:56,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:56,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590999747] [2024-11-09 10:21:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590999747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:56,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:56,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517191009] [2024-11-09 10:21:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:56,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:21:56,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:21:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:21:56,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:21:56,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:56,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:56,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:21:56,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:56,269 INFO L124 PetriNetUnfolderBase]: 574/1064 cut-off events. [2024-11-09 10:21:56,270 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-09 10:21:56,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1064 events. 574/1064 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5069 event pairs, 179 based on Foata normal form. 9/926 useless extension candidates. Maximal degree in co-relation 695. Up to 755 conditions per place. [2024-11-09 10:21:56,276 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 59 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-09 10:21:56,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 293 flow [2024-11-09 10:21:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:21:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:21:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-09 10:21:56,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-09 10:21:56,278 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 98 flow. Second operand 5 states and 143 transitions. [2024-11-09 10:21:56,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 293 flow [2024-11-09 10:21:56,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:56,281 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 128 flow [2024-11-09 10:21:56,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-09 10:21:56,282 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-11-09 10:21:56,282 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 128 flow [2024-11-09 10:21:56,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:56,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:56,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:56,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:21:56,283 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:56,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash -423406336, now seen corresponding path program 1 times [2024-11-09 10:21:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:56,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29568638] [2024-11-09 10:21:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29568638] [2024-11-09 10:21:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29568638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:56,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:21:56,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205766787] [2024-11-09 10:21:56,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:56,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:56,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-09 10:21:56,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:56,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:56,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-09 10:21:56,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:56,560 INFO L124 PetriNetUnfolderBase]: 823/1511 cut-off events. [2024-11-09 10:21:56,560 INFO L125 PetriNetUnfolderBase]: For 263/266 co-relation queries the response was YES. [2024-11-09 10:21:56,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3206 conditions, 1511 events. 823/1511 cut-off events. For 263/266 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7773 event pairs, 363 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 1126. Up to 857 conditions per place. [2024-11-09 10:21:56,565 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-09 10:21:56,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 370 flow [2024-11-09 10:21:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-09 10:21:56,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-09 10:21:56,567 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 128 flow. Second operand 4 states and 135 transitions. [2024-11-09 10:21:56,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 370 flow [2024-11-09 10:21:56,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:56,570 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 159 flow [2024-11-09 10:21:56,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-09 10:21:56,570 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-09 10:21:56,571 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 159 flow [2024-11-09 10:21:56,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:56,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:56,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:56,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:21:56,572 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:56,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1635275436, now seen corresponding path program 1 times [2024-11-09 10:21:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:56,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071699680] [2024-11-09 10:21:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:56,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:56,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071699680] [2024-11-09 10:21:56,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071699680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:56,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:56,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:56,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831327695] [2024-11-09 10:21:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:56,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:56,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-09 10:21:56,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-09 10:21:56,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:56,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-09 10:21:56,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:56,754 INFO L124 PetriNetUnfolderBase]: 957/1715 cut-off events. [2024-11-09 10:21:56,754 INFO L125 PetriNetUnfolderBase]: For 546/548 co-relation queries the response was YES. [2024-11-09 10:21:56,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 1715 events. 957/1715 cut-off events. For 546/548 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8862 event pairs, 395 based on Foata normal form. 12/1574 useless extension candidates. Maximal degree in co-relation 1267. Up to 1191 conditions per place. [2024-11-09 10:21:56,765 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 55 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-09 10:21:56,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 328 flow [2024-11-09 10:21:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-09 10:21:56,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-11-09 10:21:56,767 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 159 flow. Second operand 3 states and 103 transitions. [2024-11-09 10:21:56,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 328 flow [2024-11-09 10:21:56,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:56,771 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 168 flow [2024-11-09 10:21:56,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-09 10:21:56,773 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-11-09 10:21:56,773 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 168 flow [2024-11-09 10:21:56,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-09 10:21:56,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:56,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:56,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:21:56,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:56,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:56,775 INFO L85 PathProgramCache]: Analyzing trace with hash 907179489, now seen corresponding path program 1 times [2024-11-09 10:21:56,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:56,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507018244] [2024-11-09 10:21:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:56,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:56,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:56,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507018244] [2024-11-09 10:21:56,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507018244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:56,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:56,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:56,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418412585] [2024-11-09 10:21:56,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:56,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:56,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:56,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:56,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:56,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-09 10:21:56,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:56,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:56,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-09 10:21:56,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:56,943 INFO L124 PetriNetUnfolderBase]: 499/1033 cut-off events. [2024-11-09 10:21:56,943 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-11-09 10:21:56,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 1033 events. 499/1033 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4803 event pairs, 105 based on Foata normal form. 60/1021 useless extension candidates. Maximal degree in co-relation 918. Up to 634 conditions per place. [2024-11-09 10:21:56,948 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-09 10:21:56,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 300 flow [2024-11-09 10:21:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-09 10:21:56,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-11-09 10:21:56,949 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 168 flow. Second operand 3 states and 91 transitions. [2024-11-09 10:21:56,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 300 flow [2024-11-09 10:21:56,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:56,952 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 170 flow [2024-11-09 10:21:56,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-09 10:21:56,952 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-09 10:21:56,952 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 170 flow [2024-11-09 10:21:56,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:56,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:56,953 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:56,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:21:56,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:56,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash 704836300, now seen corresponding path program 1 times [2024-11-09 10:21:56,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:56,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136734398] [2024-11-09 10:21:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:56,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136734398] [2024-11-09 10:21:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136734398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:21:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732126364] [2024-11-09 10:21:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:57,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:21:57,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:21:57,206 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) [2024-11-09 10:21:57,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:21:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:57,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 10:21:57,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:21:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:57,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:21:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:57,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732126364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:21:57,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:21:57,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-11-09 10:21:57,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663689317] [2024-11-09 10:21:57,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:21:57,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:21:57,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:21:57,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:21:57,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-09 10:21:57,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 170 flow. Second operand has 15 states, 15 states have (on average 17.0) internal successors, (255), 15 states have internal predecessors, (255), 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) [2024-11-09 10:21:57,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:57,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-09 10:21:57,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:58,359 INFO L124 PetriNetUnfolderBase]: 1740/3509 cut-off events. [2024-11-09 10:21:58,360 INFO L125 PetriNetUnfolderBase]: For 796/796 co-relation queries the response was YES. [2024-11-09 10:21:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 3509 events. 1740/3509 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19737 event pairs, 262 based on Foata normal form. 54/3328 useless extension candidates. Maximal degree in co-relation 2561. Up to 699 conditions per place. [2024-11-09 10:21:58,380 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 194 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-11-09 10:21:58,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 231 transitions, 1170 flow [2024-11-09 10:21:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:21:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:21:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-11-09 10:21:58,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-11-09 10:21:58,382 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 170 flow. Second operand 15 states and 425 transitions. [2024-11-09 10:21:58,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 231 transitions, 1170 flow [2024-11-09 10:21:58,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 231 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:58,389 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 417 flow [2024-11-09 10:21:58,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-09 10:21:58,390 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-11-09 10:21:58,390 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 417 flow [2024-11-09 10:21:58,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.0) internal successors, (255), 15 states have internal predecessors, (255), 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) [2024-11-09 10:21:58,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:58,391 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] [2024-11-09 10:21:58,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:21:58,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 10:21:58,592 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:58,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1089354263, now seen corresponding path program 1 times [2024-11-09 10:21:58,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:58,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965425514] [2024-11-09 10:21:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:58,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:58,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965425514] [2024-11-09 10:21:58,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965425514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:58,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:58,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:58,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597327725] [2024-11-09 10:21:58,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:58,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:58,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:58,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:58,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:21:58,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:58,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:58,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:21:58,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:58,945 INFO L124 PetriNetUnfolderBase]: 1695/3429 cut-off events. [2024-11-09 10:21:58,945 INFO L125 PetriNetUnfolderBase]: For 1886/1886 co-relation queries the response was YES. [2024-11-09 10:21:58,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8807 conditions, 3429 events. 1695/3429 cut-off events. For 1886/1886 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19738 event pairs, 1170 based on Foata normal form. 0/3315 useless extension candidates. Maximal degree in co-relation 7329. Up to 2532 conditions per place. [2024-11-09 10:21:58,968 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 64 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-09 10:21:58,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 566 flow [2024-11-09 10:21:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-09 10:21:58,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-09 10:21:58,969 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 417 flow. Second operand 4 states and 96 transitions. [2024-11-09 10:21:58,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 566 flow [2024-11-09 10:21:58,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 556 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-09 10:21:58,978 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 411 flow [2024-11-09 10:21:58,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-09 10:21:58,979 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 34 predicate places. [2024-11-09 10:21:58,979 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 411 flow [2024-11-09 10:21:58,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:58,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:58,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:58,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:21:58,980 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:58,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1748660898, now seen corresponding path program 1 times [2024-11-09 10:21:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987043967] [2024-11-09 10:21:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:58,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987043967] [2024-11-09 10:21:59,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987043967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:59,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:59,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:21:59,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475157955] [2024-11-09 10:21:59,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:59,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:21:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:21:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:21:59,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:21:59,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-11-09 10:21:59,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:59,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:21:59,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:59,594 INFO L124 PetriNetUnfolderBase]: 1780/3573 cut-off events. [2024-11-09 10:21:59,595 INFO L125 PetriNetUnfolderBase]: For 2161/2161 co-relation queries the response was YES. [2024-11-09 10:21:59,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9289 conditions, 3573 events. 1780/3573 cut-off events. For 2161/2161 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20371 event pairs, 436 based on Foata normal form. 0/3428 useless extension candidates. Maximal degree in co-relation 7786. Up to 2729 conditions per place. [2024-11-09 10:21:59,618 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 100 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2024-11-09 10:21:59,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 118 transitions, 776 flow [2024-11-09 10:21:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:21:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:21:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-11-09 10:21:59,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-11-09 10:21:59,620 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 411 flow. Second operand 7 states and 185 transitions. [2024-11-09 10:21:59,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 118 transitions, 776 flow [2024-11-09 10:21:59,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 118 transitions, 768 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:59,635 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 458 flow [2024-11-09 10:21:59,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-11-09 10:21:59,636 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-09 10:21:59,636 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 458 flow [2024-11-09 10:21:59,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-11-09 10:21:59,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:59,637 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] [2024-11-09 10:21:59,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:21:59,638 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:21:59,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1117590170, now seen corresponding path program 1 times [2024-11-09 10:21:59,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:59,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267078977] [2024-11-09 10:21:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267078977] [2024-11-09 10:21:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267078977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362897240] [2024-11-09 10:21:59,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:59,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:59,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-09 10:21:59,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-09 10:21:59,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:59,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-09 10:21:59,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:00,066 INFO L124 PetriNetUnfolderBase]: 2658/5549 cut-off events. [2024-11-09 10:22:00,066 INFO L125 PetriNetUnfolderBase]: For 3888/3888 co-relation queries the response was YES. [2024-11-09 10:22:00,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 5549 events. 2658/5549 cut-off events. For 3888/3888 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 36741 event pairs, 1282 based on Foata normal form. 137/5489 useless extension candidates. Maximal degree in co-relation 12407. Up to 3123 conditions per place. [2024-11-09 10:22:00,097 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 121 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2024-11-09 10:22:00,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1088 flow [2024-11-09 10:22:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:22:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:22:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-09 10:22:00,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-09 10:22:00,099 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 458 flow. Second operand 3 states and 104 transitions. [2024-11-09 10:22:00,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1088 flow [2024-11-09 10:22:00,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 135 transitions, 1072 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 10:22:00,110 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 461 flow [2024-11-09 10:22:00,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-09 10:22:00,111 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-09 10:22:00,112 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 461 flow [2024-11-09 10:22:00,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-09 10:22:00,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:00,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:00,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:22:00,114 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:00,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash -455977335, now seen corresponding path program 1 times [2024-11-09 10:22:00,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:00,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394884010] [2024-11-09 10:22:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:00,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394884010] [2024-11-09 10:22:00,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394884010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:00,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:00,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 10:22:00,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013846250] [2024-11-09 10:22:00,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:00,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:22:00,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:00,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:22:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:22:00,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-09 10:22:00,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 461 flow. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 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) [2024-11-09 10:22:00,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:00,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-09 10:22:00,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:01,474 INFO L124 PetriNetUnfolderBase]: 3462/7028 cut-off events. [2024-11-09 10:22:01,474 INFO L125 PetriNetUnfolderBase]: For 5748/5748 co-relation queries the response was YES. [2024-11-09 10:22:01,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19704 conditions, 7028 events. 3462/7028 cut-off events. For 5748/5748 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 44915 event pairs, 786 based on Foata normal form. 0/6808 useless extension candidates. Maximal degree in co-relation 16129. Up to 3938 conditions per place. [2024-11-09 10:22:01,519 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 165 selfloop transitions, 12 changer transitions 0/189 dead transitions. [2024-11-09 10:22:01,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 189 transitions, 1335 flow [2024-11-09 10:22:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:22:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:22:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-11-09 10:22:01,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49228395061728397 [2024-11-09 10:22:01,521 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 461 flow. Second operand 12 states and 319 transitions. [2024-11-09 10:22:01,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 189 transitions, 1335 flow [2024-11-09 10:22:01,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 189 transitions, 1323 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:22:01,540 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 523 flow [2024-11-09 10:22:01,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=523, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-11-09 10:22:01,542 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 54 predicate places. [2024-11-09 10:22:01,542 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 523 flow [2024-11-09 10:22:01,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 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) [2024-11-09 10:22:01,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:01,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:01,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:22:01,544 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:01,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash -997094798, now seen corresponding path program 1 times [2024-11-09 10:22:01,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:01,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346847363] [2024-11-09 10:22:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:01,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:01,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346847363] [2024-11-09 10:22:01,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346847363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:01,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723145073] [2024-11-09 10:22:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:01,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:01,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:01,647 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) [2024-11-09 10:22:01,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:22:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:01,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 10:22:01,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:01,756 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:22:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723145073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:01,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:22:01,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-09 10:22:01,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439276941] [2024-11-09 10:22:01,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:01,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:22:01,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:01,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:22:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:22:01,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:22:01,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-09 10:22:01,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:01,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:22:01,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:02,322 INFO L124 PetriNetUnfolderBase]: 3504/7051 cut-off events. [2024-11-09 10:22:02,322 INFO L125 PetriNetUnfolderBase]: For 6627/6627 co-relation queries the response was YES. [2024-11-09 10:22:02,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20247 conditions, 7051 events. 3504/7051 cut-off events. For 6627/6627 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 45906 event pairs, 2843 based on Foata normal form. 19/6840 useless extension candidates. Maximal degree in co-relation 16638. Up to 6094 conditions per place. [2024-11-09 10:22:02,365 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 69 selfloop transitions, 1 changer transitions 2/82 dead transitions. [2024-11-09 10:22:02,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 82 transitions, 663 flow [2024-11-09 10:22:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:22:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:22:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-09 10:22:02,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-11-09 10:22:02,367 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 523 flow. Second operand 3 states and 77 transitions. [2024-11-09 10:22:02,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 82 transitions, 663 flow [2024-11-09 10:22:02,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 82 transitions, 643 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-09 10:22:02,384 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 498 flow [2024-11-09 10:22:02,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-11-09 10:22:02,385 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 48 predicate places. [2024-11-09 10:22:02,385 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 498 flow [2024-11-09 10:22:02,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-09 10:22:02,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:02,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:02,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:22:02,590 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,SelfDestructingSolverStorable10 [2024-11-09 10:22:02,591 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:02,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:02,591 INFO L85 PathProgramCache]: Analyzing trace with hash 174056194, now seen corresponding path program 1 times [2024-11-09 10:22:02,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:02,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302968206] [2024-11-09 10:22:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302968206] [2024-11-09 10:22:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302968206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918043071] [2024-11-09 10:22:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:02,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:02,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:02,874 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) [2024-11-09 10:22:02,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:22:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:02,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:22:02,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:03,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:03,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918043071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:03,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:03,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-09 10:22:03,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875205364] [2024-11-09 10:22:03,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:03,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:22:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:22:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:22:03,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-09 10:22:03,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 498 flow. Second operand has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 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) [2024-11-09 10:22:03,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:03,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-09 10:22:03,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:05,326 INFO L124 PetriNetUnfolderBase]: 7062/14003 cut-off events. [2024-11-09 10:22:05,327 INFO L125 PetriNetUnfolderBase]: For 12617/12621 co-relation queries the response was YES. [2024-11-09 10:22:05,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39808 conditions, 14003 events. 7062/14003 cut-off events. For 12617/12621 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 98266 event pairs, 902 based on Foata normal form. 154/13703 useless extension candidates. Maximal degree in co-relation 39772. Up to 2318 conditions per place. [2024-11-09 10:22:05,408 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 317 selfloop transitions, 60 changer transitions 0/385 dead transitions. [2024-11-09 10:22:05,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 385 transitions, 2676 flow [2024-11-09 10:22:05,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 10:22:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 10:22:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 600 transitions. [2024-11-09 10:22:05,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2024-11-09 10:22:05,411 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 498 flow. Second operand 21 states and 600 transitions. [2024-11-09 10:22:05,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 385 transitions, 2676 flow [2024-11-09 10:22:05,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 385 transitions, 2673 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 10:22:05,456 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1031 flow [2024-11-09 10:22:05,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1031, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-11-09 10:22:05,457 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 78 predicate places. [2024-11-09 10:22:05,457 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1031 flow [2024-11-09 10:22:05,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 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) [2024-11-09 10:22:05,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:05,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:05,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:22:05,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:05,662 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:05,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1119191721, now seen corresponding path program 1 times [2024-11-09 10:22:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182711819] [2024-11-09 10:22:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182711819] [2024-11-09 10:22:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182711819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356130767] [2024-11-09 10:22:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:06,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:06,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:06,271 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) [2024-11-09 10:22:06,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:22:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:06,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 10:22:06,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:06,496 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 25 treesize of output 1 [2024-11-09 10:22:06,612 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 80 treesize of output 32 [2024-11-09 10:22:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:22:06,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:22:06,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356130767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:06,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:22:06,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2024-11-09 10:22:06,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441857701] [2024-11-09 10:22:06,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:06,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:22:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:22:06,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2024-11-09 10:22:06,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-09 10:22:06,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1031 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-11-09 10:22:06,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:06,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-09 10:22:06,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:09,676 INFO L124 PetriNetUnfolderBase]: 10165/20131 cut-off events. [2024-11-09 10:22:09,676 INFO L125 PetriNetUnfolderBase]: For 33551/33551 co-relation queries the response was YES. [2024-11-09 10:22:09,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63260 conditions, 20131 events. 10165/20131 cut-off events. For 33551/33551 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 153154 event pairs, 1401 based on Foata normal form. 0/19589 useless extension candidates. Maximal degree in co-relation 63210. Up to 4323 conditions per place. [2024-11-09 10:22:09,804 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 148 selfloop transitions, 142 changer transitions 0/300 dead transitions. [2024-11-09 10:22:09,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 300 transitions, 2676 flow [2024-11-09 10:22:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:22:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:22:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 416 transitions. [2024-11-09 10:22:09,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4531590413943355 [2024-11-09 10:22:09,806 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1031 flow. Second operand 17 states and 416 transitions. [2024-11-09 10:22:09,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 300 transitions, 2676 flow [2024-11-09 10:22:09,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 300 transitions, 2519 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-11-09 10:22:09,939 INFO L231 Difference]: Finished difference. Result has 144 places, 191 transitions, 1936 flow [2024-11-09 10:22:09,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1936, PETRI_PLACES=144, PETRI_TRANSITIONS=191} [2024-11-09 10:22:09,940 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 95 predicate places. [2024-11-09 10:22:09,941 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 191 transitions, 1936 flow [2024-11-09 10:22:09,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-11-09 10:22:09,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:09,941 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:09,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:22:10,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:10,146 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:10,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1831036496, now seen corresponding path program 1 times [2024-11-09 10:22:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:10,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781927226] [2024-11-09 10:22:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:10,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781927226] [2024-11-09 10:22:10,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781927226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:10,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789365819] [2024-11-09 10:22:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:10,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:10,432 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) [2024-11-09 10:22:10,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:22:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:10,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:22:10,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:10,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:11,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789365819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:11,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:11,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 17 [2024-11-09 10:22:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949346623] [2024-11-09 10:22:11,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:11,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:22:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:22:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:22:11,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-09 10:22:11,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 191 transitions, 1936 flow. Second operand has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 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) [2024-11-09 10:22:11,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:11,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-09 10:22:11,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:14,558 INFO L124 PetriNetUnfolderBase]: 10541/20509 cut-off events. [2024-11-09 10:22:14,559 INFO L125 PetriNetUnfolderBase]: For 38910/38920 co-relation queries the response was YES. [2024-11-09 10:22:14,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67377 conditions, 20509 events. 10541/20509 cut-off events. For 38910/38920 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 151698 event pairs, 1963 based on Foata normal form. 148/20195 useless extension candidates. Maximal degree in co-relation 67324. Up to 3480 conditions per place. [2024-11-09 10:22:14,719 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 394 selfloop transitions, 149 changer transitions 0/551 dead transitions. [2024-11-09 10:22:14,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 551 transitions, 5179 flow [2024-11-09 10:22:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 10:22:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 10:22:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 684 transitions. [2024-11-09 10:22:14,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-09 10:22:14,723 INFO L175 Difference]: Start difference. First operand has 144 places, 191 transitions, 1936 flow. Second operand 25 states and 684 transitions. [2024-11-09 10:22:14,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 551 transitions, 5179 flow [2024-11-09 10:22:14,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 551 transitions, 4750 flow, removed 214 selfloop flow, removed 1 redundant places. [2024-11-09 10:22:14,968 INFO L231 Difference]: Finished difference. Result has 179 places, 268 transitions, 2938 flow [2024-11-09 10:22:14,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2938, PETRI_PLACES=179, PETRI_TRANSITIONS=268} [2024-11-09 10:22:14,968 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 130 predicate places. [2024-11-09 10:22:14,969 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 268 transitions, 2938 flow [2024-11-09 10:22:14,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 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) [2024-11-09 10:22:14,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:14,969 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:14,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:22:15,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 10:22:15,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:15,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash 423730696, now seen corresponding path program 1 times [2024-11-09 10:22:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:15,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134010064] [2024-11-09 10:22:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:15,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134010064] [2024-11-09 10:22:15,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134010064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812472415] [2024-11-09 10:22:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:15,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:15,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:15,255 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) [2024-11-09 10:22:15,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:22:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:15,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:22:15,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:15,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812472415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:15,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:15,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-09 10:22:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318091273] [2024-11-09 10:22:15,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:15,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:22:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:22:15,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:22:15,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:22:15,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 268 transitions, 2938 flow. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 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) [2024-11-09 10:22:15,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:15,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:22:15,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:20,376 INFO L124 PetriNetUnfolderBase]: 16525/32600 cut-off events. [2024-11-09 10:22:20,376 INFO L125 PetriNetUnfolderBase]: For 82873/82892 co-relation queries the response was YES. [2024-11-09 10:22:20,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110190 conditions, 32600 events. 16525/32600 cut-off events. For 82873/82892 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 263371 event pairs, 5215 based on Foata normal form. 1024/33268 useless extension candidates. Maximal degree in co-relation 110124. Up to 6140 conditions per place. [2024-11-09 10:22:20,654 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 514 selfloop transitions, 146 changer transitions 0/669 dead transitions. [2024-11-09 10:22:20,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 669 transitions, 7981 flow [2024-11-09 10:22:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:22:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:22:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-11-09 10:22:20,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6782407407407407 [2024-11-09 10:22:20,655 INFO L175 Difference]: Start difference. First operand has 179 places, 268 transitions, 2938 flow. Second operand 8 states and 293 transitions. [2024-11-09 10:22:20,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 669 transitions, 7981 flow [2024-11-09 10:22:21,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 669 transitions, 7482 flow, removed 201 selfloop flow, removed 9 redundant places. [2024-11-09 10:22:21,329 INFO L231 Difference]: Finished difference. Result has 183 places, 347 transitions, 4335 flow [2024-11-09 10:22:21,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4335, PETRI_PLACES=183, PETRI_TRANSITIONS=347} [2024-11-09 10:22:21,330 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 134 predicate places. [2024-11-09 10:22:21,330 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 347 transitions, 4335 flow [2024-11-09 10:22:21,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 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) [2024-11-09 10:22:21,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:21,331 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:21,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 10:22:21,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 10:22:21,535 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:21,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2076465584, now seen corresponding path program 1 times [2024-11-09 10:22:21,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091958802] [2024-11-09 10:22:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:21,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 10:22:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:21,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091958802] [2024-11-09 10:22:21,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091958802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:21,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:21,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:22:21,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145778315] [2024-11-09 10:22:21,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:21,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:22:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:21,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:22:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:22:21,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:22:21,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 347 transitions, 4335 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-09 10:22:21,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:21,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:22:21,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:26,195 INFO L124 PetriNetUnfolderBase]: 14877/29147 cut-off events. [2024-11-09 10:22:26,195 INFO L125 PetriNetUnfolderBase]: For 87361/87400 co-relation queries the response was YES. [2024-11-09 10:22:26,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103770 conditions, 29147 events. 14877/29147 cut-off events. For 87361/87400 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 230036 event pairs, 10197 based on Foata normal form. 490/29449 useless extension candidates. Maximal degree in co-relation 103704. Up to 21010 conditions per place. [2024-11-09 10:22:26,416 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 296 selfloop transitions, 72 changer transitions 0/377 dead transitions. [2024-11-09 10:22:26,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 377 transitions, 5236 flow [2024-11-09 10:22:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:22:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:22:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-09 10:22:26,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-09 10:22:26,418 INFO L175 Difference]: Start difference. First operand has 183 places, 347 transitions, 4335 flow. Second operand 3 states and 96 transitions. [2024-11-09 10:22:26,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 377 transitions, 5236 flow [2024-11-09 10:22:26,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 377 transitions, 5156 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-09 10:22:26,825 INFO L231 Difference]: Finished difference. Result has 183 places, 329 transitions, 4312 flow [2024-11-09 10:22:26,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4312, PETRI_PLACES=183, PETRI_TRANSITIONS=329} [2024-11-09 10:22:26,826 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 134 predicate places. [2024-11-09 10:22:26,826 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 329 transitions, 4312 flow [2024-11-09 10:22:26,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-09 10:22:26,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:26,826 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:26,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:22:26,826 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:26,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash -850781396, now seen corresponding path program 1 times [2024-11-09 10:22:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321971557] [2024-11-09 10:22:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:27,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321971557] [2024-11-09 10:22:27,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321971557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783141835] [2024-11-09 10:22:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:27,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:27,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:27,607 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) [2024-11-09 10:22:27,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:22:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:27,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 10:22:27,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:27,775 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 25 treesize of output 1 [2024-11-09 10:22:27,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 10:22:27,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 10:22:28,010 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 80 treesize of output 32 [2024-11-09 10:22:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:28,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:28,426 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 54 treesize of output 46 [2024-11-09 10:22:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783141835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:28,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-09 10:22:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563727274] [2024-11-09 10:22:28,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:28,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 10:22:28,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 10:22:28,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 10:22:28,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-09 10:22:28,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 329 transitions, 4312 flow. Second operand has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 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) [2024-11-09 10:22:28,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:28,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-09 10:22:28,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:37,240 INFO L124 PetriNetUnfolderBase]: 19025/37405 cut-off events. [2024-11-09 10:22:37,240 INFO L125 PetriNetUnfolderBase]: For 118361/118361 co-relation queries the response was YES. [2024-11-09 10:22:37,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134638 conditions, 37405 events. 19025/37405 cut-off events. For 118361/118361 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 299280 event pairs, 2508 based on Foata normal form. 0/37224 useless extension candidates. Maximal degree in co-relation 134574. Up to 7257 conditions per place. [2024-11-09 10:22:37,726 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 371 selfloop transitions, 385 changer transitions 26/791 dead transitions. [2024-11-09 10:22:37,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 791 transitions, 8724 flow [2024-11-09 10:22:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-09 10:22:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-09 10:22:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1212 transitions. [2024-11-09 10:22:37,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4156378600823045 [2024-11-09 10:22:37,729 INFO L175 Difference]: Start difference. First operand has 183 places, 329 transitions, 4312 flow. Second operand 54 states and 1212 transitions. [2024-11-09 10:22:37,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 791 transitions, 8724 flow [2024-11-09 10:22:38,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 791 transitions, 8430 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-11-09 10:22:38,288 INFO L231 Difference]: Finished difference. Result has 239 places, 435 transitions, 6271 flow [2024-11-09 10:22:38,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=6271, PETRI_PLACES=239, PETRI_TRANSITIONS=435} [2024-11-09 10:22:38,289 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 190 predicate places. [2024-11-09 10:22:38,289 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 435 transitions, 6271 flow [2024-11-09 10:22:38,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 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) [2024-11-09 10:22:38,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:38,290 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:38,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:22:38,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:38,490 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 10:22:38,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash -917738821, now seen corresponding path program 1 times [2024-11-09 10:22:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422814878] [2024-11-09 10:22:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:38,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:38,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422814878] [2024-11-09 10:22:38,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422814878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:38,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518550457] [2024-11-09 10:22:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:38,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:38,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:38,770 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) [2024-11-09 10:22:38,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:22:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:38,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:22:38,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:39,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518550457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:39,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:39,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-11-09 10:22:39,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70536032] [2024-11-09 10:22:39,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:39,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 10:22:39,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:39,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 10:22:39,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-09 10:22:39,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-09 10:22:39,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 435 transitions, 6271 flow. Second operand has 21 states, 21 states have (on average 19.857142857142858) internal successors, (417), 21 states have internal predecessors, (417), 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) [2024-11-09 10:22:39,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:39,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-09 10:22:39,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand