./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:52:06,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:52:06,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:52:06,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:52:06,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:52:06,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:52:06,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:52:06,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:52:06,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:52:06,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:52:06,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:52:06,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:52:06,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:52:06,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:52:06,670 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:52:06,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:52:06,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:52:06,670 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:52:06,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:52:06,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:52:06,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:52:06,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:52:06,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:52:06,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:52:06,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:52:06,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:52:06,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:52:06,675 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:52:06,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:52:06,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:52:06,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:52:06,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:52:06,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:06,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:52:06,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:52:06,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:52:06,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:52:06,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:52:06,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:52:06,676 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:52:06,677 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:52:06,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:52:06,678 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2024-11-19 01:52:06,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:52:06,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:52:06,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:52:06,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:52:06,938 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:52:06,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2024-11-19 01:52:08,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:52:08,481 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:52:08,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2024-11-19 01:52:08,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d71773e3/2932fa5fba19418a8ed657bc621d57e6/FLAG3ee8677cd [2024-11-19 01:52:08,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d71773e3/2932fa5fba19418a8ed657bc621d57e6 [2024-11-19 01:52:08,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:52:08,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:52:08,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:08,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:52:08,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:52:08,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc9c926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08, skipping insertion in model container [2024-11-19 01:52:08,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:52:08,692 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2592,2605] [2024-11-19 01:52:08,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:08,719 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:52:08,742 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2592,2605] [2024-11-19 01:52:08,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:08,758 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:52:08,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08 WrapperNode [2024-11-19 01:52:08,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:08,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:08,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:52:08,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:52:08,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,788 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-19 01:52:08,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:08,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:52:08,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:52:08,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:52:08,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,821 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 01:52:08,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:52:08,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:52:08,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:52:08,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:52:08,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (1/1) ... [2024-11-19 01:52:08,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:08,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:08,860 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) [2024-11-19 01:52:08,862 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 [2024-11-19 01:52:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:52:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:52:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:52:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:52:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:52:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:52:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:52:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:52:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:52:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:52:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:52:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:52:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:52:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:52:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:52:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:52:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:52:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:52:08,905 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:52:09,022 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:52:09,024 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:52:09,219 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:52:09,219 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:52:09,421 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:52:09,422 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:52:09,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:09 BoogieIcfgContainer [2024-11-19 01:52:09,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:52:09,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:52:09,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:52:09,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:52:09,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:52:08" (1/3) ... [2024-11-19 01:52:09,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b896f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:09, skipping insertion in model container [2024-11-19 01:52:09,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:08" (2/3) ... [2024-11-19 01:52:09,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b896f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:09, skipping insertion in model container [2024-11-19 01:52:09,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:09" (3/3) ... [2024-11-19 01:52:09,431 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2024-11-19 01:52:09,444 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:52:09,445 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:52:09,445 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:52:09,493 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:52:09,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-19 01:52:09,551 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-19 01:52:09,552 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:52:09,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-19 01:52:09,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-19 01:52:09,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-19 01:52:09,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:52:09,576 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10336438, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:52:09,576 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:52:09,586 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:52:09,589 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-19 01:52:09,589 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:52:09,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:09,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:09,591 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:09,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash 261283878, now seen corresponding path program 1 times [2024-11-19 01:52:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:09,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866078609] [2024-11-19 01:52:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866078609] [2024-11-19 01:52:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866078609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:52:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855814440] [2024-11-19 01:52:09,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:09,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:52:09,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:52:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:52:09,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:09,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:09,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:09,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:09,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:10,040 INFO L124 PetriNetUnfolderBase]: 617/945 cut-off events. [2024-11-19 01:52:10,040 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-19 01:52:10,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 945 events. 617/945 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3706 event pairs, 126 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 1706. Up to 677 conditions per place. [2024-11-19 01:52:10,049 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-19 01:52:10,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-19 01:52:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:52:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:52:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-19 01:52:10,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-19 01:52:10,062 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-19 01:52:10,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-19 01:52:10,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:52:10,069 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-19 01:52:10,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-19 01:52:10,073 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-19 01:52:10,073 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-19 01:52:10,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:10,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:10,074 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] [2024-11-19 01:52:10,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:52:10,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:10,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1254734667, now seen corresponding path program 1 times [2024-11-19 01:52:10,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:10,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001140946] [2024-11-19 01:52:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:10,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001140946] [2024-11-19 01:52:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001140946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:10,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:52:10,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212670453] [2024-11-19 01:52:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:10,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:52:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:52:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:52:10,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:10,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-19 01:52:10,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:10,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:10,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:10,317 INFO L124 PetriNetUnfolderBase]: 617/943 cut-off events. [2024-11-19 01:52:10,318 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-11-19 01:52:10,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 943 events. 617/943 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3839 event pairs, 407 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 792. Up to 895 conditions per place. [2024-11-19 01:52:10,324 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-19 01:52:10,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2024-11-19 01:52:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:52:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:52:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-19 01:52:10,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-19 01:52:10,326 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2024-11-19 01:52:10,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2024-11-19 01:52:10,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:52:10,329 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2024-11-19 01:52:10,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-19 01:52:10,330 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-19 01:52:10,331 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2024-11-19 01:52:10,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-19 01:52:10,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:10,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:10,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:52:10,331 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:10,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash -788942457, now seen corresponding path program 1 times [2024-11-19 01:52:10,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:10,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546230851] [2024-11-19 01:52:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:10,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:52:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546230851] [2024-11-19 01:52:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546230851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:10,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:10,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:52:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169156524] [2024-11-19 01:52:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:10,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:52:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:52:10,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:52:10,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:10,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-19 01:52:10,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:10,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:10,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:10,610 INFO L124 PetriNetUnfolderBase]: 790/1161 cut-off events. [2024-11-19 01:52:10,610 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-19 01:52:10,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 1161 events. 790/1161 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4676 event pairs, 246 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2562. Up to 576 conditions per place. [2024-11-19 01:52:10,616 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-19 01:52:10,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2024-11-19 01:52:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:52:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:52:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-19 01:52:10,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-19 01:52:10,619 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2024-11-19 01:52:10,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2024-11-19 01:52:10,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 01:52:10,622 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2024-11-19 01:52:10,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-19 01:52:10,624 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-19 01:52:10,624 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2024-11-19 01:52:10,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-19 01:52:10,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:10,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:10,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:52:10,624 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:10,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 513300121, now seen corresponding path program 1 times [2024-11-19 01:52:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102143953] [2024-11-19 01:52:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102143953] [2024-11-19 01:52:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102143953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869847738] [2024-11-19 01:52:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:10,771 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) [2024-11-19 01:52:10,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:52:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:10,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:52:10,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:10,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:10,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869847738] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:10,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:52:10,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-19 01:52:10,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176217992] [2024-11-19 01:52:10,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:10,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:52:10,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:10,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:52:10,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:52:10,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:10,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:10,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:10,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:10,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:11,062 INFO L124 PetriNetUnfolderBase]: 855/1295 cut-off events. [2024-11-19 01:52:11,062 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2024-11-19 01:52:11,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1295 events. 855/1295 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5390 event pairs, 256 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 3227. Up to 670 conditions per place. [2024-11-19 01:52:11,068 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-11-19 01:52:11,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2024-11-19 01:52:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:52:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:52:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-19 01:52:11,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-19 01:52:11,069 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2024-11-19 01:52:11,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2024-11-19 01:52:11,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:11,072 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2024-11-19 01:52:11,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-19 01:52:11,072 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-19 01:52:11,072 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2024-11-19 01:52:11,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:11,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:11,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:11,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:11,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:11,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:11,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -694361008, now seen corresponding path program 1 times [2024-11-19 01:52:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705398372] [2024-11-19 01:52:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:11,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705398372] [2024-11-19 01:52:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705398372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8141253] [2024-11-19 01:52:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:11,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:11,826 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) [2024-11-19 01:52:11,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:52:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:11,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 01:52:11,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:11,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:12,127 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 55 treesize of output 31 [2024-11-19 01:52:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:12,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:12,886 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 93 treesize of output 85 [2024-11-19 01:52:12,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:12,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 111 [2024-11-19 01:52:13,418 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 117 treesize of output 105 [2024-11-19 01:52:13,427 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-19 01:52:13,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 1 [2024-11-19 01:52:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:13,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8141253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:13,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:13,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-11-19 01:52:13,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587067918] [2024-11-19 01:52:13,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:13,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:52:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:13,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:52:13,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:52:13,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:13,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 23 states, 23 states have (on average 8.73913043478261) internal successors, (201), 23 states have internal predecessors, (201), 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) [2024-11-19 01:52:13,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:13,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:13,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:14,927 INFO L124 PetriNetUnfolderBase]: 1841/2761 cut-off events. [2024-11-19 01:52:14,927 INFO L125 PetriNetUnfolderBase]: For 1721/1721 co-relation queries the response was YES. [2024-11-19 01:52:14,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 2761 events. 1841/2761 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12611 event pairs, 106 based on Foata normal form. 1/2760 useless extension candidates. Maximal degree in co-relation 5614. Up to 1375 conditions per place. [2024-11-19 01:52:14,940 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2024-11-19 01:52:14,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2024-11-19 01:52:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:52:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:52:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2024-11-19 01:52:14,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-19 01:52:14,943 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2024-11-19 01:52:14,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2024-11-19 01:52:14,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:14,947 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2024-11-19 01:52:14,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2024-11-19 01:52:14,948 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-11-19 01:52:14,948 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2024-11-19 01:52:14,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.73913043478261) internal successors, (201), 23 states have internal predecessors, (201), 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) [2024-11-19 01:52:14,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:14,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:14,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:52:15,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:15,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:15,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:15,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2045165880, now seen corresponding path program 2 times [2024-11-19 01:52:15,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:15,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929253519] [2024-11-19 01:52:15,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:15,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:15,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:15,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929253519] [2024-11-19 01:52:15,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929253519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:15,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741523231] [2024-11-19 01:52:15,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:15,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:15,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:15,507 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) [2024-11-19 01:52:15,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:52:15,570 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:15,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:15,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 01:52:15,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:15,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:15,785 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 30 [2024-11-19 01:52:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:15,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:16,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2024-11-19 01:52:16,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:16,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 149 [2024-11-19 01:52:17,296 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 93 treesize of output 85 [2024-11-19 01:52:17,325 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-19 01:52:17,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 103 [2024-11-19 01:52:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:17,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741523231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:17,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:17,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-19 01:52:17,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052390581] [2024-11-19 01:52:17,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:17,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 01:52:17,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 01:52:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:52:17,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:17,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 21 states, 21 states have (on average 9.80952380952381) internal successors, (206), 21 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:17,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:17,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:17,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:19,114 INFO L124 PetriNetUnfolderBase]: 2050/3325 cut-off events. [2024-11-19 01:52:19,114 INFO L125 PetriNetUnfolderBase]: For 4766/4766 co-relation queries the response was YES. [2024-11-19 01:52:19,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10796 conditions, 3325 events. 2050/3325 cut-off events. For 4766/4766 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17920 event pairs, 74 based on Foata normal form. 3/3326 useless extension candidates. Maximal degree in co-relation 10246. Up to 1815 conditions per place. [2024-11-19 01:52:19,137 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 193 selfloop transitions, 121 changer transitions 2/322 dead transitions. [2024-11-19 01:52:19,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 322 transitions, 2167 flow [2024-11-19 01:52:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 01:52:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 01:52:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 474 transitions. [2024-11-19 01:52:19,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4633431085043988 [2024-11-19 01:52:19,139 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 31 states and 474 transitions. [2024-11-19 01:52:19,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 322 transitions, 2167 flow [2024-11-19 01:52:19,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 322 transitions, 1959 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:19,152 INFO L231 Difference]: Finished difference. Result has 105 places, 182 transitions, 1307 flow [2024-11-19 01:52:19,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1307, PETRI_PLACES=105, PETRI_TRANSITIONS=182} [2024-11-19 01:52:19,153 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2024-11-19 01:52:19,154 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 182 transitions, 1307 flow [2024-11-19 01:52:19,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.80952380952381) internal successors, (206), 21 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:19,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:19,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:19,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:52:19,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:19,356 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:19,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash -770334866, now seen corresponding path program 3 times [2024-11-19 01:52:19,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:19,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205943270] [2024-11-19 01:52:19,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:19,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:19,386 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:52:19,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205943270] [2024-11-19 01:52:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205943270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980017255] [2024-11-19 01:52:19,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:19,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:19,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:19,739 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) [2024-11-19 01:52:19,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:52:19,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:52:19,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:19,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 01:52:19,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:19,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:19,977 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 30 [2024-11-19 01:52:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:20,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:20,588 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 53 treesize of output 47 [2024-11-19 01:52:20,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:20,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 58 [2024-11-19 01:52:20,634 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 66 treesize of output 58 [2024-11-19 01:52:20,640 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 01:52:20,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 1 [2024-11-19 01:52:20,644 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 69 treesize of output 61 [2024-11-19 01:52:20,652 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 01:52:20,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 75 [2024-11-19 01:52:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980017255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:20,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2024-11-19 01:52:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648275260] [2024-11-19 01:52:20,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:20,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 01:52:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:20,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 01:52:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:52:20,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:20,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 182 transitions, 1307 flow. Second operand has 21 states, 21 states have (on average 9.761904761904763) internal successors, (205), 21 states have internal predecessors, (205), 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) [2024-11-19 01:52:20,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:20,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:20,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:22,927 INFO L124 PetriNetUnfolderBase]: 3977/6406 cut-off events. [2024-11-19 01:52:22,928 INFO L125 PetriNetUnfolderBase]: For 17137/17158 co-relation queries the response was YES. [2024-11-19 01:52:22,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24707 conditions, 6406 events. 3977/6406 cut-off events. For 17137/17158 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 38908 event pairs, 273 based on Foata normal form. 23/6427 useless extension candidates. Maximal degree in co-relation 23563. Up to 2818 conditions per place. [2024-11-19 01:52:22,996 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 242 selfloop transitions, 255 changer transitions 2/505 dead transitions. [2024-11-19 01:52:22,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 505 transitions, 4211 flow [2024-11-19 01:52:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 01:52:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-19 01:52:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 542 transitions. [2024-11-19 01:52:22,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4692640692640693 [2024-11-19 01:52:23,000 INFO L175 Difference]: Start difference. First operand has 105 places, 182 transitions, 1307 flow. Second operand 35 states and 542 transitions. [2024-11-19 01:52:23,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 505 transitions, 4211 flow [2024-11-19 01:52:23,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 505 transitions, 4018 flow, removed 94 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:23,050 INFO L231 Difference]: Finished difference. Result has 149 places, 342 transitions, 3150 flow [2024-11-19 01:52:23,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3150, PETRI_PLACES=149, PETRI_TRANSITIONS=342} [2024-11-19 01:52:23,055 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 114 predicate places. [2024-11-19 01:52:23,056 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 342 transitions, 3150 flow [2024-11-19 01:52:23,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.761904761904763) internal successors, (205), 21 states have internal predecessors, (205), 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) [2024-11-19 01:52:23,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:23,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:23,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:23,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:23,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:23,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:23,258 INFO L85 PathProgramCache]: Analyzing trace with hash 64459388, now seen corresponding path program 4 times [2024-11-19 01:52:23,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:23,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62979417] [2024-11-19 01:52:23,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:23,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:23,288 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:23,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:23,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62979417] [2024-11-19 01:52:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62979417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878176326] [2024-11-19 01:52:23,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:23,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:23,659 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) [2024-11-19 01:52:23,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:52:23,727 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:23,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:23,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 01:52:23,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:23,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:23,937 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 55 treesize of output 31 [2024-11-19 01:52:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:23,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:24,549 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 53 treesize of output 47 [2024-11-19 01:52:24,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:24,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 58 [2024-11-19 01:52:24,606 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 69 treesize of output 61 [2024-11-19 01:52:24,614 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 01:52:24,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 75 [2024-11-19 01:52:24,696 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 66 treesize of output 58 [2024-11-19 01:52:24,710 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 01:52:24,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 1 [2024-11-19 01:52:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:24,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878176326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:24,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-19 01:52:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881676387] [2024-11-19 01:52:24,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:24,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:52:24,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:52:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:52:24,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:24,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 342 transitions, 3150 flow. Second operand has 24 states, 24 states have (on average 8.625) internal successors, (207), 24 states have internal predecessors, (207), 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) [2024-11-19 01:52:24,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:24,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:27,425 INFO L124 PetriNetUnfolderBase]: 5904/9418 cut-off events. [2024-11-19 01:52:27,426 INFO L125 PetriNetUnfolderBase]: For 32967/33013 co-relation queries the response was YES. [2024-11-19 01:52:27,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39753 conditions, 9418 events. 5904/9418 cut-off events. For 32967/33013 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 60627 event pairs, 1226 based on Foata normal form. 15/9422 useless extension candidates. Maximal degree in co-relation 38597. Up to 6926 conditions per place. [2024-11-19 01:52:27,495 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 369 selfloop transitions, 156 changer transitions 2/532 dead transitions. [2024-11-19 01:52:27,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 532 transitions, 5387 flow [2024-11-19 01:52:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 01:52:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 01:52:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 435 transitions. [2024-11-19 01:52:27,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-11-19 01:52:27,500 INFO L175 Difference]: Start difference. First operand has 149 places, 342 transitions, 3150 flow. Second operand 33 states and 435 transitions. [2024-11-19 01:52:27,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 532 transitions, 5387 flow [2024-11-19 01:52:27,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 532 transitions, 5160 flow, removed 60 selfloop flow, removed 12 redundant places. [2024-11-19 01:52:27,607 INFO L231 Difference]: Finished difference. Result has 178 places, 417 transitions, 4103 flow [2024-11-19 01:52:27,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2938, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4103, PETRI_PLACES=178, PETRI_TRANSITIONS=417} [2024-11-19 01:52:27,610 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 143 predicate places. [2024-11-19 01:52:27,611 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 417 transitions, 4103 flow [2024-11-19 01:52:27,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.625) internal successors, (207), 24 states have internal predecessors, (207), 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) [2024-11-19 01:52:27,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:27,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:27,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:27,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:27,817 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:27,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash 384996020, now seen corresponding path program 5 times [2024-11-19 01:52:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321339925] [2024-11-19 01:52:27,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:52:27,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:27,842 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:27,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:28,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:28,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321339925] [2024-11-19 01:52:28,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321339925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795240623] [2024-11-19 01:52:28,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:52:28,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:28,792 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) [2024-11-19 01:52:28,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:52:28,850 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:28,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:28,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 01:52:28,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:28,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:29,213 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 55 treesize of output 31 [2024-11-19 01:52:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:29,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:30,262 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 69 treesize of output 61 [2024-11-19 01:52:30,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:30,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 79 [2024-11-19 01:52:30,495 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 66 treesize of output 58 [2024-11-19 01:52:30,502 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 01:52:30,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 1 [2024-11-19 01:52:30,516 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 53 treesize of output 47 [2024-11-19 01:52:30,522 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 01:52:30,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 1 [2024-11-19 01:52:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:30,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795240623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:30,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:30,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-19 01:52:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924125088] [2024-11-19 01:52:30,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:30,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 01:52:30,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 01:52:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2024-11-19 01:52:30,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:52:30,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 417 transitions, 4103 flow. Second operand has 28 states, 28 states have (on average 7.535714285714286) internal successors, (211), 28 states have internal predecessors, (211), 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) [2024-11-19 01:52:30,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:30,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:52:30,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:34,506 INFO L124 PetriNetUnfolderBase]: 10144/14702 cut-off events. [2024-11-19 01:52:34,506 INFO L125 PetriNetUnfolderBase]: For 56141/56141 co-relation queries the response was YES. [2024-11-19 01:52:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64950 conditions, 14702 events. 10144/14702 cut-off events. For 56141/56141 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 84975 event pairs, 1618 based on Foata normal form. 4/14702 useless extension candidates. Maximal degree in co-relation 64544. Up to 9990 conditions per place. [2024-11-19 01:52:34,750 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 462 selfloop transitions, 329 changer transitions 2/795 dead transitions. [2024-11-19 01:52:34,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 795 transitions, 8730 flow [2024-11-19 01:52:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 01:52:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 01:52:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 441 transitions. [2024-11-19 01:52:34,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-11-19 01:52:34,752 INFO L175 Difference]: Start difference. First operand has 178 places, 417 transitions, 4103 flow. Second operand 33 states and 441 transitions. [2024-11-19 01:52:34,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 795 transitions, 8730 flow [2024-11-19 01:52:35,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 795 transitions, 8307 flow, removed 145 selfloop flow, removed 9 redundant places. [2024-11-19 01:52:35,085 INFO L231 Difference]: Finished difference. Result has 211 places, 627 transitions, 7054 flow [2024-11-19 01:52:35,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7054, PETRI_PLACES=211, PETRI_TRANSITIONS=627} [2024-11-19 01:52:35,086 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 176 predicate places. [2024-11-19 01:52:35,086 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 627 transitions, 7054 flow [2024-11-19 01:52:35,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.535714285714286) internal successors, (211), 28 states have internal predecessors, (211), 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) [2024-11-19 01:52:35,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:35,086 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:35,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:52:35,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:35,288 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:35,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1878647692, now seen corresponding path program 6 times [2024-11-19 01:52:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963469755] [2024-11-19 01:52:35,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:52:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:35,299 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:52:35,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963469755] [2024-11-19 01:52:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963469755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68310289] [2024-11-19 01:52:35,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:52:35,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:35,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:35,364 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) [2024-11-19 01:52:35,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:52:35,434 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:52:35,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:35,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:35,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:35,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68310289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:35,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:35,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:52:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708796650] [2024-11-19 01:52:35,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:35,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:52:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:52:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:52:35,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:35,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 627 transitions, 7054 flow. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 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) [2024-11-19 01:52:35,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:35,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:35,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:38,384 INFO L124 PetriNetUnfolderBase]: 8803/13397 cut-off events. [2024-11-19 01:52:38,385 INFO L125 PetriNetUnfolderBase]: For 82220/82484 co-relation queries the response was YES. [2024-11-19 01:52:38,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68943 conditions, 13397 events. 8803/13397 cut-off events. For 82220/82484 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 85353 event pairs, 1706 based on Foata normal form. 299/13690 useless extension candidates. Maximal degree in co-relation 68850. Up to 4341 conditions per place. [2024-11-19 01:52:38,513 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 720 selfloop transitions, 81 changer transitions 0/806 dead transitions. [2024-11-19 01:52:38,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 806 transitions, 10499 flow [2024-11-19 01:52:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-11-19 01:52:38,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-11-19 01:52:38,515 INFO L175 Difference]: Start difference. First operand has 211 places, 627 transitions, 7054 flow. Second operand 10 states and 171 transitions. [2024-11-19 01:52:38,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 806 transitions, 10499 flow [2024-11-19 01:52:38,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 806 transitions, 10017 flow, removed 195 selfloop flow, removed 9 redundant places. [2024-11-19 01:52:38,844 INFO L231 Difference]: Finished difference. Result has 213 places, 635 transitions, 6985 flow [2024-11-19 01:52:38,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6594, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6985, PETRI_PLACES=213, PETRI_TRANSITIONS=635} [2024-11-19 01:52:38,846 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 178 predicate places. [2024-11-19 01:52:38,846 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 635 transitions, 6985 flow [2024-11-19 01:52:38,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 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) [2024-11-19 01:52:38,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:38,847 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:38,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:52:39,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:39,049 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:39,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1357470473, now seen corresponding path program 7 times [2024-11-19 01:52:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:39,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292833133] [2024-11-19 01:52:39,049 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:52:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:39,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:39,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292833133] [2024-11-19 01:52:39,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292833133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:39,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617661712] [2024-11-19 01:52:39,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:52:39,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:39,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:39,166 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) [2024-11-19 01:52:39,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:52:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:39,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:39,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:39,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:39,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617661712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:39,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:39,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:52:39,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549682409] [2024-11-19 01:52:39,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:39,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:52:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:39,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:52:39,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:52:39,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:39,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 635 transitions, 6985 flow. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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) [2024-11-19 01:52:39,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:39,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:39,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:41,292 INFO L124 PetriNetUnfolderBase]: 7326/11420 cut-off events. [2024-11-19 01:52:41,292 INFO L125 PetriNetUnfolderBase]: For 79404/79490 co-relation queries the response was YES. [2024-11-19 01:52:41,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58690 conditions, 11420 events. 7326/11420 cut-off events. For 79404/79490 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 73050 event pairs, 2218 based on Foata normal form. 410/11826 useless extension candidates. Maximal degree in co-relation 57954. Up to 3957 conditions per place. [2024-11-19 01:52:41,382 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 616 selfloop transitions, 48 changer transitions 0/669 dead transitions. [2024-11-19 01:52:41,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 669 transitions, 8424 flow [2024-11-19 01:52:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:52:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:52:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-11-19 01:52:41,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-19 01:52:41,385 INFO L175 Difference]: Start difference. First operand has 213 places, 635 transitions, 6985 flow. Second operand 7 states and 121 transitions. [2024-11-19 01:52:41,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 669 transitions, 8424 flow [2024-11-19 01:52:41,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 669 transitions, 8403 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:41,634 INFO L231 Difference]: Finished difference. Result has 217 places, 543 transitions, 5989 flow [2024-11-19 01:52:41,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5847, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5989, PETRI_PLACES=217, PETRI_TRANSITIONS=543} [2024-11-19 01:52:41,635 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 182 predicate places. [2024-11-19 01:52:41,635 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 543 transitions, 5989 flow [2024-11-19 01:52:41,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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) [2024-11-19 01:52:41,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:41,635 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:41,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:52:41,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 01:52:41,840 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:41,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1470250251, now seen corresponding path program 8 times [2024-11-19 01:52:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:41,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697094532] [2024-11-19 01:52:41,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:41,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:41,869 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:41,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:41,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697094532] [2024-11-19 01:52:41,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697094532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91129372] [2024-11-19 01:52:41,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:41,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:41,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:41,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:52:42,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:42,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:42,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:52:42,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:42,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:42,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91129372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:42,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:42,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:52:42,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120081056] [2024-11-19 01:52:42,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:42,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:52:42,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:42,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:52:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:52:42,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:42,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 543 transitions, 5989 flow. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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) [2024-11-19 01:52:42,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:42,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:42,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:44,092 INFO L124 PetriNetUnfolderBase]: 7151/10982 cut-off events. [2024-11-19 01:52:44,092 INFO L125 PetriNetUnfolderBase]: For 82464/82708 co-relation queries the response was YES. [2024-11-19 01:52:44,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57758 conditions, 10982 events. 7151/10982 cut-off events. For 82464/82708 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 68670 event pairs, 2150 based on Foata normal form. 653/11550 useless extension candidates. Maximal degree in co-relation 57050. Up to 4015 conditions per place. [2024-11-19 01:52:44,471 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 570 selfloop transitions, 48 changer transitions 4/642 dead transitions. [2024-11-19 01:52:44,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 642 transitions, 8312 flow [2024-11-19 01:52:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:52:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:52:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-11-19 01:52:44,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-11-19 01:52:44,475 INFO L175 Difference]: Start difference. First operand has 217 places, 543 transitions, 5989 flow. Second operand 7 states and 117 transitions. [2024-11-19 01:52:44,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 642 transitions, 8312 flow [2024-11-19 01:52:44,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 642 transitions, 8211 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-19 01:52:44,843 INFO L231 Difference]: Finished difference. Result has 221 places, 512 transitions, 5858 flow [2024-11-19 01:52:44,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5574, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5858, PETRI_PLACES=221, PETRI_TRANSITIONS=512} [2024-11-19 01:52:44,845 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 186 predicate places. [2024-11-19 01:52:44,845 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 512 transitions, 5858 flow [2024-11-19 01:52:44,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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) [2024-11-19 01:52:44,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:44,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:44,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 01:52:45,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:45,047 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:45,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:45,047 INFO L85 PathProgramCache]: Analyzing trace with hash 671048642, now seen corresponding path program 1 times [2024-11-19 01:52:45,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:45,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261492289] [2024-11-19 01:52:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:45,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:52:45,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261492289] [2024-11-19 01:52:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261492289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903837254] [2024-11-19 01:52:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:45,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:45,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:45,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:45,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:52:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:45,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:45,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:52:45,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:52:45,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903837254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:45,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:45,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-19 01:52:45,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28949309] [2024-11-19 01:52:45,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:45,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:52:45,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:45,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:52:45,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:52:45,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:45,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 512 transitions, 5858 flow. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 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) [2024-11-19 01:52:45,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:45,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:45,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:46,340 INFO L124 PetriNetUnfolderBase]: 4218/6806 cut-off events. [2024-11-19 01:52:46,340 INFO L125 PetriNetUnfolderBase]: For 59853/60051 co-relation queries the response was YES. [2024-11-19 01:52:46,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37430 conditions, 6806 events. 4218/6806 cut-off events. For 59853/60051 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 42856 event pairs, 1947 based on Foata normal form. 410/7155 useless extension candidates. Maximal degree in co-relation 37372. Up to 3914 conditions per place. [2024-11-19 01:52:46,412 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 219 selfloop transitions, 3 changer transitions 166/403 dead transitions. [2024-11-19 01:52:46,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 403 transitions, 5528 flow [2024-11-19 01:52:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:52:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:52:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-19 01:52:46,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-11-19 01:52:46,422 INFO L175 Difference]: Start difference. First operand has 221 places, 512 transitions, 5858 flow. Second operand 6 states and 97 transitions. [2024-11-19 01:52:46,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 403 transitions, 5528 flow [2024-11-19 01:52:46,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 403 transitions, 5279 flow, removed 28 selfloop flow, removed 14 redundant places. [2024-11-19 01:52:46,611 INFO L231 Difference]: Finished difference. Result has 200 places, 237 transitions, 2511 flow [2024-11-19 01:52:46,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2511, PETRI_PLACES=200, PETRI_TRANSITIONS=237} [2024-11-19 01:52:46,612 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 165 predicate places. [2024-11-19 01:52:46,612 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 237 transitions, 2511 flow [2024-11-19 01:52:46,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 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) [2024-11-19 01:52:46,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:46,614 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:46,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 01:52:46,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:52:46,815 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:46,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2023618337, now seen corresponding path program 9 times [2024-11-19 01:52:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:46,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532321719] [2024-11-19 01:52:46,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:46,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:52:46,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532321719] [2024-11-19 01:52:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532321719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668805095] [2024-11-19 01:52:46,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:46,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:46,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:52:47,048 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:52:47,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:47,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:52:47,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:47,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:47,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668805095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:47,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:47,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-19 01:52:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693719874] [2024-11-19 01:52:47,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:47,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:52:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:52:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:52:47,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:52:47,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 237 transitions, 2511 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:47,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:47,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:52:47,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:48,201 INFO L124 PetriNetUnfolderBase]: 5016/7415 cut-off events. [2024-11-19 01:52:48,201 INFO L125 PetriNetUnfolderBase]: For 61327/61602 co-relation queries the response was YES. [2024-11-19 01:52:48,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41844 conditions, 7415 events. 5016/7415 cut-off events. For 61327/61602 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40071 event pairs, 964 based on Foata normal form. 328/7717 useless extension candidates. Maximal degree in co-relation 41794. Up to 2671 conditions per place. [2024-11-19 01:52:48,264 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 374 selfloop transitions, 68 changer transitions 0/454 dead transitions. [2024-11-19 01:52:48,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 454 transitions, 5633 flow [2024-11-19 01:52:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:52:48,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:52:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-11-19 01:52:48,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-11-19 01:52:48,267 INFO L175 Difference]: Start difference. First operand has 200 places, 237 transitions, 2511 flow. Second operand 13 states and 177 transitions. [2024-11-19 01:52:48,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 454 transitions, 5633 flow [2024-11-19 01:52:48,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 454 transitions, 5362 flow, removed 124 selfloop flow, removed 20 redundant places. [2024-11-19 01:52:48,474 INFO L231 Difference]: Finished difference. Result has 143 places, 268 transitions, 2831 flow [2024-11-19 01:52:48,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2831, PETRI_PLACES=143, PETRI_TRANSITIONS=268} [2024-11-19 01:52:48,475 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 108 predicate places. [2024-11-19 01:52:48,475 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 268 transitions, 2831 flow [2024-11-19 01:52:48,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:48,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:48,476 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:48,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:48,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:52:48,681 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:48,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash 234608999, now seen corresponding path program 10 times [2024-11-19 01:52:48,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:48,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325490191] [2024-11-19 01:52:48,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:48,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:48,695 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:48,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:52:48,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325490191] [2024-11-19 01:52:48,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325490191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638784817] [2024-11-19 01:52:48,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:48,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:48,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:48,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:52:48,881 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:48,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:48,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:48,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:52:48,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:52:49,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638784817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:49,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:49,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-19 01:52:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144994478] [2024-11-19 01:52:49,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:49,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:52:49,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:52:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:52:49,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-19 01:52:49,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 268 transitions, 2831 flow. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:49,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:49,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-19 01:52:49,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:51,497 INFO L124 PetriNetUnfolderBase]: 11921/16995 cut-off events. [2024-11-19 01:52:51,497 INFO L125 PetriNetUnfolderBase]: For 124063/124063 co-relation queries the response was YES. [2024-11-19 01:52:51,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96892 conditions, 16995 events. 11921/16995 cut-off events. For 124063/124063 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 90537 event pairs, 210 based on Foata normal form. 17/17012 useless extension candidates. Maximal degree in co-relation 96854. Up to 6032 conditions per place. [2024-11-19 01:52:51,702 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 672 selfloop transitions, 357 changer transitions 0/1030 dead transitions. [2024-11-19 01:52:51,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1030 transitions, 12771 flow [2024-11-19 01:52:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-19 01:52:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-19 01:52:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 555 transitions. [2024-11-19 01:52:51,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41019955654101997 [2024-11-19 01:52:51,704 INFO L175 Difference]: Start difference. First operand has 143 places, 268 transitions, 2831 flow. Second operand 41 states and 555 transitions. [2024-11-19 01:52:51,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1030 transitions, 12771 flow [2024-11-19 01:52:52,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 1030 transitions, 12660 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-11-19 01:52:52,404 INFO L231 Difference]: Finished difference. Result has 197 places, 566 transitions, 7573 flow [2024-11-19 01:52:52,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=7573, PETRI_PLACES=197, PETRI_TRANSITIONS=566} [2024-11-19 01:52:52,405 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 162 predicate places. [2024-11-19 01:52:52,405 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 566 transitions, 7573 flow [2024-11-19 01:52:52,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:52,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:52,406 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:52,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:52,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:52:52,607 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:52,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash -230218661, now seen corresponding path program 11 times [2024-11-19 01:52:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053475473] [2024-11-19 01:52:52,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:52:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:52,618 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:52:52,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:52:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053475473] [2024-11-19 01:52:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053475473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225021456] [2024-11-19 01:52:52,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:52:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:52,694 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:52,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:52:52,759 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:52:52,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:52,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:52,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:52:52,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:52:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225021456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:52,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:52,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-19 01:52:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947391467] [2024-11-19 01:52:52,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:52,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:52:52,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:52,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:52:52,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:52:52,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-19 01:52:52,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 566 transitions, 7573 flow. Second operand has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:52,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:52,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-19 01:52:52,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:01,651 INFO L124 PetriNetUnfolderBase]: 36483/50745 cut-off events. [2024-11-19 01:53:01,651 INFO L125 PetriNetUnfolderBase]: For 625296/625296 co-relation queries the response was YES. [2024-11-19 01:53:02,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355619 conditions, 50745 events. 36483/50745 cut-off events. For 625296/625296 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 298328 event pairs, 754 based on Foata normal form. 116/50861 useless extension candidates. Maximal degree in co-relation 355564. Up to 20611 conditions per place. [2024-11-19 01:53:02,633 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 1358 selfloop transitions, 1290 changer transitions 0/2649 dead transitions. [2024-11-19 01:53:02,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 2649 transitions, 40129 flow [2024-11-19 01:53:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-19 01:53:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-19 01:53:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 949 transitions. [2024-11-19 01:53:02,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39941077441077444 [2024-11-19 01:53:02,636 INFO L175 Difference]: Start difference. First operand has 197 places, 566 transitions, 7573 flow. Second operand 72 states and 949 transitions. [2024-11-19 01:53:02,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 2649 transitions, 40129 flow