./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-min-max-1.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/parallel-min-max-1.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 bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:47:25,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:47:25,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:47:25,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:47:25,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:47:25,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:47:25,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:47:25,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:47:25,808 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:47:25,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:47:25,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:47:25,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:47:25,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:47:25,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:47:25,810 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:47:25,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:47:25,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:47:25,814 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:47:25,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:47:25,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:47:25,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:47:25,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:47:25,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:47:25,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:47:25,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:47:25,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:47:25,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:47:25,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:47:25,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:47:25,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:47:25,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:47:25,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:47:25,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:25,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:47:25,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:47:25,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:47:25,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:47:25,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:47:25,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:47:25,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:47:25,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:47:25,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:47:25,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2024-11-19 01:47:26,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:47:26,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:47:26,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:47:26,105 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:47:26,105 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:47:26,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-19 01:47:27,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:47:27,734 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:47:27,735 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-19 01:47:27,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3c99457/2b34f8291e634bcfbc8933702e702317/FLAG9bf335e67 [2024-11-19 01:47:27,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3c99457/2b34f8291e634bcfbc8933702e702317 [2024-11-19 01:47:27,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:47:27,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:47:27,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:27,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:47:27,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:47:27,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:27" (1/1) ... [2024-11-19 01:47:27,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9232f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:27, skipping insertion in model container [2024-11-19 01:47:27,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:27" (1/1) ... [2024-11-19 01:47:27,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:47:28,002 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/parallel-min-max-1.wvr.c[2642,2655] [2024-11-19 01:47:28,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:28,022 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:47:28,045 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/parallel-min-max-1.wvr.c[2642,2655] [2024-11-19 01:47:28,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:28,068 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:47:28,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28 WrapperNode [2024-11-19 01:47:28,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:28,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:28,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:47:28,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:47:28,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,116 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2024-11-19 01:47:28,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:28,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:47:28,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:47:28,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:47:28,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,169 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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 01:47:28,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:47:28,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:47:28,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:47:28,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:47:28,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (1/1) ... [2024-11-19 01:47:28,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:28,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:28,240 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 01:47:28,242 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 01:47:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:47:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:47:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:47:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:47:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:47:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:47:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:47:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:47:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:47:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:47:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:47:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:47:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:47:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:47:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:47:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:47:28,289 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 01:47:28,384 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:47:28,386 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:47:28,684 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:47:28,685 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:47:28,881 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:47:28,881 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 01:47:28,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:28 BoogieIcfgContainer [2024-11-19 01:47:28,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:47:28,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:47:28,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:47:28,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:47:28,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:27" (1/3) ... [2024-11-19 01:47:28,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638228d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:28, skipping insertion in model container [2024-11-19 01:47:28,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:28" (2/3) ... [2024-11-19 01:47:28,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638228d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:28, skipping insertion in model container [2024-11-19 01:47:28,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:28" (3/3) ... [2024-11-19 01:47:28,894 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-11-19 01:47:28,911 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:47:28,911 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:47:28,911 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:47:28,973 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:47:29,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 131 flow [2024-11-19 01:47:29,051 INFO L124 PetriNetUnfolderBase]: 5/52 cut-off events. [2024-11-19 01:47:29,055 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:47:29,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 5/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-19 01:47:29,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 131 flow [2024-11-19 01:47:29,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 120 flow [2024-11-19 01:47:29,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:47:29,077 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;@1ab97ff3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:47:29,077 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:47:29,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:47:29,096 INFO L124 PetriNetUnfolderBase]: 5/50 cut-off events. [2024-11-19 01:47:29,096 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:47:29,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:29,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:29,098 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 01:47:29,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:29,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1923786139, now seen corresponding path program 1 times [2024-11-19 01:47:29,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:29,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411197494] [2024-11-19 01:47:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:29,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:29,572 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 01:47:29,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:29,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411197494] [2024-11-19 01:47:29,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411197494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:29,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:29,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736809272] [2024-11-19 01:47:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:29,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:29,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:29,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:29,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 01:47:29,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 01:47:29,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:29,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 01:47:29,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:30,024 INFO L124 PetriNetUnfolderBase]: 1122/1687 cut-off events. [2024-11-19 01:47:30,026 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-11-19 01:47:30,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1687 events. 1122/1687 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8016 event pairs, 529 based on Foata normal form. 0/1287 useless extension candidates. Maximal degree in co-relation 3268. Up to 977 conditions per place. [2024-11-19 01:47:30,045 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 47 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-11-19 01:47:30,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 258 flow [2024-11-19 01:47:30,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-19 01:47:30,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2024-11-19 01:47:30,062 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 120 flow. Second operand 4 states and 131 transitions. [2024-11-19 01:47:30,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 258 flow [2024-11-19 01:47:30,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:47:30,074 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 122 flow [2024-11-19 01:47:30,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-11-19 01:47:30,083 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-19 01:47:30,083 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 122 flow [2024-11-19 01:47:30,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 01:47:30,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:30,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:30,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:47:30,084 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 01:47:30,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash 835859384, now seen corresponding path program 1 times [2024-11-19 01:47:30,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:30,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726560061] [2024-11-19 01:47:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:30,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726560061] [2024-11-19 01:47:30,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726560061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:30,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:30,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:30,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741416162] [2024-11-19 01:47:30,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:30,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:30,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:30,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 01:47:30,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 01:47:30,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:30,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 01:47:30,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:30,572 INFO L124 PetriNetUnfolderBase]: 1538/2303 cut-off events. [2024-11-19 01:47:30,572 INFO L125 PetriNetUnfolderBase]: For 162/221 co-relation queries the response was YES. [2024-11-19 01:47:30,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4794 conditions, 2303 events. 1538/2303 cut-off events. For 162/221 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10920 event pairs, 777 based on Foata normal form. 59/1982 useless extension candidates. Maximal degree in co-relation 1605. Up to 1347 conditions per place. [2024-11-19 01:47:30,586 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 48 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-19 01:47:30,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 265 flow [2024-11-19 01:47:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-19 01:47:30,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-19 01:47:30,592 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 122 flow. Second operand 4 states and 130 transitions. [2024-11-19 01:47:30,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 265 flow [2024-11-19 01:47:30,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:30,595 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 132 flow [2024-11-19 01:47:30,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-11-19 01:47:30,597 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-11-19 01:47:30,597 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 132 flow [2024-11-19 01:47:30,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 01:47:30,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:30,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:30,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:47:30,598 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 01:47:30,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1036143820, now seen corresponding path program 1 times [2024-11-19 01:47:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:30,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439102363] [2024-11-19 01:47:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:30,757 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 01:47:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439102363] [2024-11-19 01:47:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439102363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:30,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:30,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16812861] [2024-11-19 01:47:30,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:30,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:30,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:30,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-19 01:47:30,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 01:47:30,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:30,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-19 01:47:30,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:31,026 INFO L124 PetriNetUnfolderBase]: 1407/2117 cut-off events. [2024-11-19 01:47:31,029 INFO L125 PetriNetUnfolderBase]: For 154/236 co-relation queries the response was YES. [2024-11-19 01:47:31,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4583 conditions, 2117 events. 1407/2117 cut-off events. For 154/236 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10062 event pairs, 1128 based on Foata normal form. 82/1883 useless extension candidates. Maximal degree in co-relation 1573. Up to 1902 conditions per place. [2024-11-19 01:47:31,044 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 33 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-19 01:47:31,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 206 flow [2024-11-19 01:47:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-19 01:47:31,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5409090909090909 [2024-11-19 01:47:31,048 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 132 flow. Second operand 4 states and 119 transitions. [2024-11-19 01:47:31,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 206 flow [2024-11-19 01:47:31,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:31,052 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 142 flow [2024-11-19 01:47:31,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-19 01:47:31,053 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-19 01:47:31,053 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 142 flow [2024-11-19 01:47:31,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 01:47:31,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:31,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:31,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:47:31,055 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 01:47:31,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 980422967, now seen corresponding path program 1 times [2024-11-19 01:47:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:31,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521438604] [2024-11-19 01:47:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:31,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:31,437 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 01:47:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521438604] [2024-11-19 01:47:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521438604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973745622] [2024-11-19 01:47:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:31,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:31,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:31,441 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 01:47:31,442 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 01:47:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:31,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:47:31,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:31,824 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 29 treesize of output 13 [2024-11-19 01:47:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:31,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:47:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973745622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:31,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:47:31,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-11-19 01:47:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366101638] [2024-11-19 01:47:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:31,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:47:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:47:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:47:31,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-19 01:47:31,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 142 flow. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 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 01:47:31,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:31,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-19 01:47:31,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:32,718 INFO L124 PetriNetUnfolderBase]: 2408/3558 cut-off events. [2024-11-19 01:47:32,718 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-11-19 01:47:32,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7930 conditions, 3558 events. 2408/3558 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17875 event pairs, 225 based on Foata normal form. 0/3301 useless extension candidates. Maximal degree in co-relation 7896. Up to 1746 conditions per place. [2024-11-19 01:47:32,764 INFO L140 encePairwiseOnDemand]: 39/55 looper letters, 128 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2024-11-19 01:47:32,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 156 transitions, 687 flow [2024-11-19 01:47:32,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:47:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:47:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-19 01:47:32,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46115702479338844 [2024-11-19 01:47:32,769 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 142 flow. Second operand 11 states and 279 transitions. [2024-11-19 01:47:32,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 156 transitions, 687 flow [2024-11-19 01:47:32,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 156 transitions, 681 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:32,776 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 270 flow [2024-11-19 01:47:32,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=270, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-11-19 01:47:32,778 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-19 01:47:32,778 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 270 flow [2024-11-19 01:47:32,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 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 01:47:32,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:32,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:32,797 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 01:47:32,983 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 01:47:32,984 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 01:47:32,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1841637529, now seen corresponding path program 1 times [2024-11-19 01:47:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440815348] [2024-11-19 01:47:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:47:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440815348] [2024-11-19 01:47:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440815348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:33,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:47:33,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755500531] [2024-11-19 01:47:33,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:33,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:33,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:33,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:47:33,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-19 01:47:33,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:33,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:33,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-19 01:47:33,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:33,843 INFO L124 PetriNetUnfolderBase]: 4135/6077 cut-off events. [2024-11-19 01:47:33,843 INFO L125 PetriNetUnfolderBase]: For 5684/6012 co-relation queries the response was YES. [2024-11-19 01:47:33,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17328 conditions, 6077 events. 4135/6077 cut-off events. For 5684/6012 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 30267 event pairs, 663 based on Foata normal form. 329/6077 useless extension candidates. Maximal degree in co-relation 17280. Up to 3293 conditions per place. [2024-11-19 01:47:33,881 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 74 selfloop transitions, 4 changer transitions 56/143 dead transitions. [2024-11-19 01:47:33,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 143 transitions, 869 flow [2024-11-19 01:47:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:47:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:47:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-11-19 01:47:33,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5236363636363637 [2024-11-19 01:47:33,887 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 270 flow. Second operand 5 states and 144 transitions. [2024-11-19 01:47:33,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 143 transitions, 869 flow [2024-11-19 01:47:33,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 143 transitions, 857 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:33,908 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 280 flow [2024-11-19 01:47:33,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-19 01:47:33,909 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-11-19 01:47:33,909 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 280 flow [2024-11-19 01:47:33,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:33,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:33,910 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:33,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:47:33,911 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 01:47:33,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash 15481463, now seen corresponding path program 2 times [2024-11-19 01:47:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:33,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394642646] [2024-11-19 01:47:33,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:33,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:33,961 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:34,261 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 01:47:34,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:34,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394642646] [2024-11-19 01:47:34,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394642646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:34,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184100774] [2024-11-19 01:47:34,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:34,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:34,265 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 01:47:34,268 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 01:47:34,361 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:34,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:34,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:47:34,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:34,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:47:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:34,562 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:47:34,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184100774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:34,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:47:34,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-19 01:47:34,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353348086] [2024-11-19 01:47:34,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:34,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:47:34,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:34,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:47:34,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:47:34,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-19 01:47:34,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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 01:47:34,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:34,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-19 01:47:34,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:35,042 INFO L124 PetriNetUnfolderBase]: 1453/2237 cut-off events. [2024-11-19 01:47:35,042 INFO L125 PetriNetUnfolderBase]: For 2188/2345 co-relation queries the response was YES. [2024-11-19 01:47:35,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6669 conditions, 2237 events. 1453/2237 cut-off events. For 2188/2345 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10985 event pairs, 130 based on Foata normal form. 124/2281 useless extension candidates. Maximal degree in co-relation 6649. Up to 1132 conditions per place. [2024-11-19 01:47:35,065 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 97 selfloop transitions, 15 changer transitions 0/127 dead transitions. [2024-11-19 01:47:35,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 754 flow [2024-11-19 01:47:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:47:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:47:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-11-19 01:47:35,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:47:35,067 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 280 flow. Second operand 8 states and 220 transitions. [2024-11-19 01:47:35,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 754 flow [2024-11-19 01:47:35,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 744 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 01:47:35,074 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 332 flow [2024-11-19 01:47:35,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=332, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-11-19 01:47:35,077 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-11-19 01:47:35,077 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 332 flow [2024-11-19 01:47:35,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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 01:47:35,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:35,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:35,094 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 01:47:35,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 01:47:35,279 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 01:47:35,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash -880884857, now seen corresponding path program 1 times [2024-11-19 01:47:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494950376] [2024-11-19 01:47:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:35,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:47:35,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494950376] [2024-11-19 01:47:35,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494950376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953618696] [2024-11-19 01:47:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:35,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:35,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:35,571 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 01:47:35,573 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 01:47:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:35,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 01:47:35,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:35,698 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 01:47:35,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:47:35,871 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 01:47:35,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:47:36,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953618696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:36,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:36,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 20 [2024-11-19 01:47:36,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359883986] [2024-11-19 01:47:36,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:36,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 01:47:36,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 01:47:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-19 01:47:36,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-11-19 01:47:36,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 332 flow. Second operand has 20 states, 20 states have (on average 12.0) internal successors, (240), 20 states have internal predecessors, (240), 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 01:47:36,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:36,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-11-19 01:47:36,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:38,737 INFO L124 PetriNetUnfolderBase]: 5506/8037 cut-off events. [2024-11-19 01:47:38,737 INFO L125 PetriNetUnfolderBase]: For 12141/12469 co-relation queries the response was YES. [2024-11-19 01:47:38,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26115 conditions, 8037 events. 5506/8037 cut-off events. For 12141/12469 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 38769 event pairs, 896 based on Foata normal form. 330/8109 useless extension candidates. Maximal degree in co-relation 26060. Up to 1826 conditions per place. [2024-11-19 01:47:38,778 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 261 selfloop transitions, 63 changer transitions 181/510 dead transitions. [2024-11-19 01:47:38,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 510 transitions, 3276 flow [2024-11-19 01:47:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-19 01:47:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-19 01:47:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 796 transitions. [2024-11-19 01:47:38,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3079303675048356 [2024-11-19 01:47:38,782 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 332 flow. Second operand 47 states and 796 transitions. [2024-11-19 01:47:38,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 510 transitions, 3276 flow [2024-11-19 01:47:38,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 510 transitions, 3210 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 01:47:38,800 INFO L231 Difference]: Finished difference. Result has 132 places, 115 transitions, 714 flow [2024-11-19 01:47:38,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=714, PETRI_PLACES=132, PETRI_TRANSITIONS=115} [2024-11-19 01:47:38,801 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-11-19 01:47:38,801 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 115 transitions, 714 flow [2024-11-19 01:47:38,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.0) internal successors, (240), 20 states have internal predecessors, (240), 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 01:47:38,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:38,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:38,819 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 01:47:39,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:39,008 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 01:47:39,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash -264468297, now seen corresponding path program 2 times [2024-11-19 01:47:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:39,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603764989] [2024-11-19 01:47:39,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:39,036 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:39,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:47:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603764989] [2024-11-19 01:47:39,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603764989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:39,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492758253] [2024-11-19 01:47:39,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:39,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:39,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:39,355 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 01:47:39,357 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 01:47:39,444 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:39,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:39,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:47:39,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:39,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:47:39,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 37 [2024-11-19 01:47:39,783 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 01:47:39,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492758253] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:40,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:47:40,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12, 13] total 28 [2024-11-19 01:47:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228464666] [2024-11-19 01:47:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:40,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:40,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-11-19 01:47:40,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-19 01:47:40,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 115 transitions, 714 flow. Second operand has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 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 01:47:40,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:40,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-19 01:47:40,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:46,256 INFO L124 PetriNetUnfolderBase]: 11060/15956 cut-off events. [2024-11-19 01:47:46,257 INFO L125 PetriNetUnfolderBase]: For 65113/65113 co-relation queries the response was YES. [2024-11-19 01:47:46,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62111 conditions, 15956 events. 11060/15956 cut-off events. For 65113/65113 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 84965 event pairs, 910 based on Foata normal form. 6/15286 useless extension candidates. Maximal degree in co-relation 62046. Up to 3430 conditions per place. [2024-11-19 01:47:46,404 INFO L140 encePairwiseOnDemand]: 36/55 looper letters, 335 selfloop transitions, 159 changer transitions 179/680 dead transitions. [2024-11-19 01:47:46,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 680 transitions, 5126 flow [2024-11-19 01:47:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-19 01:47:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-19 01:47:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1082 transitions. [2024-11-19 01:47:46,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3643097643097643 [2024-11-19 01:47:46,412 INFO L175 Difference]: Start difference. First operand has 132 places, 115 transitions, 714 flow. Second operand 54 states and 1082 transitions. [2024-11-19 01:47:46,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 680 transitions, 5126 flow [2024-11-19 01:47:46,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 680 transitions, 4853 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-11-19 01:47:46,499 INFO L231 Difference]: Finished difference. Result has 185 places, 255 transitions, 2136 flow [2024-11-19 01:47:46,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2136, PETRI_PLACES=185, PETRI_TRANSITIONS=255} [2024-11-19 01:47:46,501 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 129 predicate places. [2024-11-19 01:47:46,502 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 255 transitions, 2136 flow [2024-11-19 01:47:46,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 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 01:47:46,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:46,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:46,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:47:46,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:46,704 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 01:47:46,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:46,705 INFO L85 PathProgramCache]: Analyzing trace with hash -460996803, now seen corresponding path program 3 times [2024-11-19 01:47:46,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:46,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382941986] [2024-11-19 01:47:46,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:46,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:46,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:47:46,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:47:47,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:47,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382941986] [2024-11-19 01:47:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382941986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792784446] [2024-11-19 01:47:47,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:47,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:47,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:47,152 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 01:47:47,153 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 01:47:47,249 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:47:47,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:47,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:47:47,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:47,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:47:47,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 37 [2024-11-19 01:47:47,552 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 01:47:47,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:47,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792784446] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:47,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:47:47,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12, 13] total 28 [2024-11-19 01:47:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899724162] [2024-11-19 01:47:48,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:48,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:48,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2024-11-19 01:47:48,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-19 01:47:48,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 255 transitions, 2136 flow. Second operand has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 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 01:47:48,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:48,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-19 01:47:48,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:55,107 INFO L124 PetriNetUnfolderBase]: 16511/23811 cut-off events. [2024-11-19 01:47:55,107 INFO L125 PetriNetUnfolderBase]: For 242183/242183 co-relation queries the response was YES. [2024-11-19 01:47:55,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115688 conditions, 23811 events. 16511/23811 cut-off events. For 242183/242183 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 135515 event pairs, 2200 based on Foata normal form. 6/22889 useless extension candidates. Maximal degree in co-relation 115600. Up to 9986 conditions per place. [2024-11-19 01:47:55,340 INFO L140 encePairwiseOnDemand]: 35/55 looper letters, 511 selfloop transitions, 193 changer transitions 179/890 dead transitions. [2024-11-19 01:47:55,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 890 transitions, 8564 flow [2024-11-19 01:47:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-19 01:47:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-19 01:47:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1167 transitions. [2024-11-19 01:47:55,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3658307210031348 [2024-11-19 01:47:55,344 INFO L175 Difference]: Start difference. First operand has 185 places, 255 transitions, 2136 flow. Second operand 58 states and 1167 transitions. [2024-11-19 01:47:55,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 890 transitions, 8564 flow [2024-11-19 01:47:56,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 890 transitions, 7264 flow, removed 605 selfloop flow, removed 10 redundant places. [2024-11-19 01:47:56,508 INFO L231 Difference]: Finished difference. Result has 246 places, 416 transitions, 3526 flow [2024-11-19 01:47:56,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=3526, PETRI_PLACES=246, PETRI_TRANSITIONS=416} [2024-11-19 01:47:56,509 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 190 predicate places. [2024-11-19 01:47:56,510 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 416 transitions, 3526 flow [2024-11-19 01:47:56,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 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 01:47:56,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:56,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:56,526 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 01:47:56,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:56,716 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 01:47:56,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash 834907675, now seen corresponding path program 4 times [2024-11-19 01:47:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422028803] [2024-11-19 01:47:56,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:56,737 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:56,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:57,103 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 01:47:57,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422028803] [2024-11-19 01:47:57,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422028803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564172776] [2024-11-19 01:47:57,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:57,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:57,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:57,107 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 01:47:57,109 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 01:47:57,202 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:57,202 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:57,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:47:57,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:57,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:47:57,305 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 01:47:57,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:57,425 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:47:57,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 01:47:57,430 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 01:47:57,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564172776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:57,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:57,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 20 [2024-11-19 01:47:57,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719838041] [2024-11-19 01:47:57,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:57,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 01:47:57,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:57,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 01:47:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-19 01:47:57,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 55 [2024-11-19 01:47:57,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 416 transitions, 3526 flow. Second operand has 20 states, 20 states have (on average 9.85) internal successors, (197), 20 states have internal predecessors, (197), 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 01:47:57,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:57,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 55 [2024-11-19 01:47:57,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:03,697 INFO L124 PetriNetUnfolderBase]: 18105/26203 cut-off events. [2024-11-19 01:48:03,697 INFO L125 PetriNetUnfolderBase]: For 449773/449785 co-relation queries the response was YES. [2024-11-19 01:48:03,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132586 conditions, 26203 events. 18105/26203 cut-off events. For 449773/449785 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 151372 event pairs, 3108 based on Foata normal form. 10/25399 useless extension candidates. Maximal degree in co-relation 132472. Up to 9670 conditions per place. [2024-11-19 01:48:04,057 INFO L140 encePairwiseOnDemand]: 34/55 looper letters, 806 selfloop transitions, 291 changer transitions 165/1265 dead transitions. [2024-11-19 01:48:04,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1265 transitions, 12197 flow [2024-11-19 01:48:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-19 01:48:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2024-11-19 01:48:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 1136 transitions. [2024-11-19 01:48:04,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2829389788293898 [2024-11-19 01:48:04,063 INFO L175 Difference]: Start difference. First operand has 246 places, 416 transitions, 3526 flow. Second operand 73 states and 1136 transitions. [2024-11-19 01:48:04,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1265 transitions, 12197 flow [2024-11-19 01:48:05,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1265 transitions, 11608 flow, removed 287 selfloop flow, removed 12 redundant places. [2024-11-19 01:48:05,377 INFO L231 Difference]: Finished difference. Result has 342 places, 566 transitions, 5620 flow [2024-11-19 01:48:05,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=5620, PETRI_PLACES=342, PETRI_TRANSITIONS=566} [2024-11-19 01:48:05,379 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 286 predicate places. [2024-11-19 01:48:05,379 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 566 transitions, 5620 flow [2024-11-19 01:48:05,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.85) internal successors, (197), 20 states have internal predecessors, (197), 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 01:48:05,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:05,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:05,392 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 01:48:05,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:05,580 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 01:48:05,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1097405273, now seen corresponding path program 5 times [2024-11-19 01:48:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:05,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630720081] [2024-11-19 01:48:05,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:05,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:05,604 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:48:05,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:05,981 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 01:48:05,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630720081] [2024-11-19 01:48:05,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630720081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599486666] [2024-11-19 01:48:05,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:05,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:05,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:05,984 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 01:48:05,986 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 01:48:06,073 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:48:06,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:06,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:48:06,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:06,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:48:06,180 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 01:48:06,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:06,283 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:48:06,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9 [2024-11-19 01:48:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:06,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599486666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:06,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:06,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 23 [2024-11-19 01:48:06,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437402421] [2024-11-19 01:48:06,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:06,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:48:06,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:06,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:48:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:48:06,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 55 [2024-11-19 01:48:06,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 566 transitions, 5620 flow. Second operand has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 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 01:48:06,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:06,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 55 [2024-11-19 01:48:06,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:16,794 INFO L124 PetriNetUnfolderBase]: 28264/40876 cut-off events. [2024-11-19 01:48:16,795 INFO L125 PetriNetUnfolderBase]: For 1489367/1489367 co-relation queries the response was YES. [2024-11-19 01:48:17,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258451 conditions, 40876 events. 28264/40876 cut-off events. For 1489367/1489367 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 249606 event pairs, 3392 based on Foata normal form. 19/39891 useless extension candidates. Maximal degree in co-relation 258290. Up to 15958 conditions per place. [2024-11-19 01:48:17,910 INFO L140 encePairwiseOnDemand]: 35/55 looper letters, 725 selfloop transitions, 506 changer transitions 538/1772 dead transitions. [2024-11-19 01:48:17,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1772 transitions, 20291 flow [2024-11-19 01:48:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-19 01:48:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-19 01:48:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 990 transitions. [2024-11-19 01:48:17,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2647058823529412 [2024-11-19 01:48:17,913 INFO L175 Difference]: Start difference. First operand has 342 places, 566 transitions, 5620 flow. Second operand 68 states and 990 transitions. [2024-11-19 01:48:17,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1772 transitions, 20291 flow [2024-11-19 01:48:22,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1772 transitions, 18896 flow, removed 415 selfloop flow, removed 29 redundant places. [2024-11-19 01:48:22,668 INFO L231 Difference]: Finished difference. Result has 398 places, 870 transitions, 10220 flow [2024-11-19 01:48:22,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=5056, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=10220, PETRI_PLACES=398, PETRI_TRANSITIONS=870} [2024-11-19 01:48:22,669 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 342 predicate places. [2024-11-19 01:48:22,669 INFO L471 AbstractCegarLoop]: Abstraction has has 398 places, 870 transitions, 10220 flow [2024-11-19 01:48:22,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 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 01:48:22,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:22,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:22,682 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 01:48:22,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:22,870 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 01:48:22,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash 475838559, now seen corresponding path program 6 times [2024-11-19 01:48:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086382944] [2024-11-19 01:48:22,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:22,902 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:48:22,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:23,284 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 01:48:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086382944] [2024-11-19 01:48:23,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086382944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335224521] [2024-11-19 01:48:23,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:23,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:23,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:23,287 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 01:48:23,288 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 01:48:23,388 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:48:23,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:23,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:48:23,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:23,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:23,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 37 [2024-11-19 01:48:23,663 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 01:48:23,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:24,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335224521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:24,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:24,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-19 01:48:24,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394878545] [2024-11-19 01:48:24,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:24,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 01:48:24,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:24,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 01:48:24,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2024-11-19 01:48:24,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-19 01:48:24,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 870 transitions, 10220 flow. Second operand has 29 states, 29 states have (on average 12.89655172413793) internal successors, (374), 29 states have internal predecessors, (374), 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 01:48:24,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:24,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-19 01:48:24,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:43,761 INFO L124 PetriNetUnfolderBase]: 35896/52296 cut-off events. [2024-11-19 01:48:43,762 INFO L125 PetriNetUnfolderBase]: For 3073107/3073107 co-relation queries the response was YES.