./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --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/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:40:16,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:40:16,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:40:16,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:40:16,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:40:16,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:40:16,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:40:16,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:40:16,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:40:16,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:40:16,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:40:16,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:40:16,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:40:16,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:40:16,816 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:40:16,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:40:16,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:40:16,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:40:16,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:40:16,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:40:16,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:40:16,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:40:16,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:40:16,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:40:16,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:40:16,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:40:16,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:40:16,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:40:16,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:40:16,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:40:16,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:40:16,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:40:16,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:40:16,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:40:16,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:40:16,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:40:16,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:40:16,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:40:16,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:40:16,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:40:16,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:40:16,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:40:16,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-11-19 01:40:17,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:40:17,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:40:17,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:40:17,061 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:40:17,062 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:40:17,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-19 01:40:18,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:40:18,633 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:40:18,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-19 01:40:18,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05f4a4a1/dc15eadbeb9b44e28f6529e3d5ca6de3/FLAG931f36a19 [2024-11-19 01:40:18,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05f4a4a1/dc15eadbeb9b44e28f6529e3d5ca6de3 [2024-11-19 01:40:18,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:40:18,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:40:18,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:40:18,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:40:18,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:40:18,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:18" (1/1) ... [2024-11-19 01:40:18,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36656ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:18, skipping insertion in model container [2024-11-19 01:40:18,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:18" (1/1) ... [2024-11-19 01:40:18,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:40:18,926 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/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-19 01:40:19,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:40:19,107 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:40:19,119 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/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-19 01:40:19,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:40:19,190 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:40:19,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19 WrapperNode [2024-11-19 01:40:19,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:40:19,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:40:19,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:40:19,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:40:19,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,245 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 119 [2024-11-19 01:40:19,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:40:19,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:40:19,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:40:19,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:40:19,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,271 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-11-19 01:40:19,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:40:19,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:40:19,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:40:19,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:40:19,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (1/1) ... [2024-11-19 01:40:19,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:40:19,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:40:19,322 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 01:40:19,325 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 01:40:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:40:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:40:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-19 01:40:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-19 01:40:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:40:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:40:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:40:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:40:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:40:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:40:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:40:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:40:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:40:19,378 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 01:40:19,512 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:40:19,514 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:40:19,738 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:40:19,738 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:40:19,875 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:40:19,875 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 01:40:19,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:40:19 BoogieIcfgContainer [2024-11-19 01:40:19,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:40:19,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:40:19,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:40:19,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:40:19,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:40:18" (1/3) ... [2024-11-19 01:40:19,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b86890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:40:19, skipping insertion in model container [2024-11-19 01:40:19,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:19" (2/3) ... [2024-11-19 01:40:19,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b86890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:40:19, skipping insertion in model container [2024-11-19 01:40:19,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:40:19" (3/3) ... [2024-11-19 01:40:19,884 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-19 01:40:19,898 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:40:19,898 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 01:40:19,898 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:40:19,927 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 01:40:19,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 37 transitions, 78 flow [2024-11-19 01:40:19,981 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-19 01:40:19,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:40:19,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-19 01:40:19,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 37 transitions, 78 flow [2024-11-19 01:40:19,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 75 flow [2024-11-19 01:40:19,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:40:19,999 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;@2b0fcc71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:40:19,999 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:40:20,006 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:40:20,007 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-11-19 01:40:20,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:40:20,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:20,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:20,008 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:20,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1096289878, now seen corresponding path program 1 times [2024-11-19 01:40:20,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:20,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631693083] [2024-11-19 01:40:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:20,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:20,452 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 01:40:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631693083] [2024-11-19 01:40:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631693083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:20,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:40:20,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722550485] [2024-11-19 01:40:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:20,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:40:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:40:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:40:20,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 01:40:20,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:40:20,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:20,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 01:40:20,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:20,729 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-11-19 01:40:20,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:40:20,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 450 events. 218/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1932 event pairs, 20 based on Foata normal form. 37/406 useless extension candidates. Maximal degree in co-relation 851. Up to 241 conditions per place. [2024-11-19 01:40:20,739 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 47 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-11-19 01:40:20,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 265 flow [2024-11-19 01:40:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:40:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:40:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-11-19 01:40:20,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536036036036036 [2024-11-19 01:40:20,754 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 75 flow. Second operand 6 states and 119 transitions. [2024-11-19 01:40:20,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 265 flow [2024-11-19 01:40:20,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:40:20,760 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 168 flow [2024-11-19 01:40:20,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-11-19 01:40:20,768 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-11-19 01:40:20,768 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 168 flow [2024-11-19 01:40:20,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:40:20,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:20,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:20,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:40:20,770 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:20,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:20,771 INFO L85 PathProgramCache]: Analyzing trace with hash 374721697, now seen corresponding path program 1 times [2024-11-19 01:40:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:20,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375702074] [2024-11-19 01:40:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:20,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:20,866 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 01:40:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375702074] [2024-11-19 01:40:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375702074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:40:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104743417] [2024-11-19 01:40:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:20,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:40:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:40:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:40:20,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 01:40:20,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 01:40:20,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:20,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 01:40:20,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:21,134 INFO L124 PetriNetUnfolderBase]: 278/559 cut-off events. [2024-11-19 01:40:21,135 INFO L125 PetriNetUnfolderBase]: For 185/187 co-relation queries the response was YES. [2024-11-19 01:40:21,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 559 events. 278/559 cut-off events. For 185/187 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2448 event pairs, 60 based on Foata normal form. 20/538 useless extension candidates. Maximal degree in co-relation 1382. Up to 303 conditions per place. [2024-11-19 01:40:21,141 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 58 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-11-19 01:40:21,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 474 flow [2024-11-19 01:40:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:40:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:40:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-19 01:40:21,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-11-19 01:40:21,147 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 168 flow. Second operand 6 states and 108 transitions. [2024-11-19 01:40:21,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 474 flow [2024-11-19 01:40:21,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:40:21,156 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 366 flow [2024-11-19 01:40:21,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-11-19 01:40:21,158 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-11-19 01:40:21,158 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 366 flow [2024-11-19 01:40:21,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 01:40:21,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:21,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:21,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:40:21,160 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:21,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1532167700, now seen corresponding path program 1 times [2024-11-19 01:40:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896774314] [2024-11-19 01:40:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:21,398 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 01:40:21,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896774314] [2024-11-19 01:40:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896774314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:21,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:40:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770344979] [2024-11-19 01:40:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:21,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:40:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:40:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:40:21,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-19 01:40:21,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 01:40:21,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:21,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-19 01:40:21,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:21,689 INFO L124 PetriNetUnfolderBase]: 399/859 cut-off events. [2024-11-19 01:40:21,690 INFO L125 PetriNetUnfolderBase]: For 1246/1263 co-relation queries the response was YES. [2024-11-19 01:40:21,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 859 events. 399/859 cut-off events. For 1246/1263 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4790 event pairs, 87 based on Foata normal form. 16/819 useless extension candidates. Maximal degree in co-relation 2722. Up to 360 conditions per place. [2024-11-19 01:40:21,696 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2024-11-19 01:40:21,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 127 transitions, 942 flow [2024-11-19 01:40:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:40:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:40:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-11-19 01:40:21,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6138996138996139 [2024-11-19 01:40:21,698 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 366 flow. Second operand 7 states and 159 transitions. [2024-11-19 01:40:21,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 127 transitions, 942 flow [2024-11-19 01:40:21,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 127 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:40:21,707 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 588 flow [2024-11-19 01:40:21,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2024-11-19 01:40:21,708 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2024-11-19 01:40:21,708 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 588 flow [2024-11-19 01:40:21,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 01:40:21,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:21,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:21,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:40:21,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:21,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -178204838, now seen corresponding path program 2 times [2024-11-19 01:40:21,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:21,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974974596] [2024-11-19 01:40:21,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:40:21,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:21,726 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:40:21,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:22,089 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 01:40:22,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:22,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974974596] [2024-11-19 01:40:22,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974974596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:22,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:22,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:40:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222524679] [2024-11-19 01:40:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:22,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:40:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:40:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:40:22,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 01:40:22,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:40:22,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:22,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 01:40:22,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:22,516 INFO L124 PetriNetUnfolderBase]: 485/974 cut-off events. [2024-11-19 01:40:22,516 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2024-11-19 01:40:22,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3572 conditions, 974 events. 485/974 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5063 event pairs, 125 based on Foata normal form. 1/974 useless extension candidates. Maximal degree in co-relation 3547. Up to 623 conditions per place. [2024-11-19 01:40:22,524 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 77 selfloop transitions, 67 changer transitions 0/150 dead transitions. [2024-11-19 01:40:22,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 150 transitions, 1398 flow [2024-11-19 01:40:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:40:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:40:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2024-11-19 01:40:22,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39293139293139295 [2024-11-19 01:40:22,528 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 588 flow. Second operand 13 states and 189 transitions. [2024-11-19 01:40:22,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 150 transitions, 1398 flow [2024-11-19 01:40:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 150 transitions, 1358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:40:22,542 INFO L231 Difference]: Finished difference. Result has 76 places, 116 transitions, 1098 flow [2024-11-19 01:40:22,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1098, PETRI_PLACES=76, PETRI_TRANSITIONS=116} [2024-11-19 01:40:22,545 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2024-11-19 01:40:22,546 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 116 transitions, 1098 flow [2024-11-19 01:40:22,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:40:22,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:22,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:22,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:40:22,547 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:22,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1362561722, now seen corresponding path program 3 times [2024-11-19 01:40:22,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:22,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053930162] [2024-11-19 01:40:22,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:40:22,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:22,565 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:40:22,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:22,733 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 01:40:22,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:22,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053930162] [2024-11-19 01:40:22,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053930162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:22,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:22,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:40:22,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721022195] [2024-11-19 01:40:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:22,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:40:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:40:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:40:22,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-19 01:40:22,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 116 transitions, 1098 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 01:40:22,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:22,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-19 01:40:22,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:22,971 INFO L124 PetriNetUnfolderBase]: 466/1016 cut-off events. [2024-11-19 01:40:22,971 INFO L125 PetriNetUnfolderBase]: For 2829/2866 co-relation queries the response was YES. [2024-11-19 01:40:22,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 1016 events. 466/1016 cut-off events. For 2829/2866 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5724 event pairs, 83 based on Foata normal form. 48/1053 useless extension candidates. Maximal degree in co-relation 4028. Up to 415 conditions per place. [2024-11-19 01:40:22,979 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 25 changer transitions 0/189 dead transitions. [2024-11-19 01:40:22,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 189 transitions, 1941 flow [2024-11-19 01:40:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:40:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:40:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-11-19 01:40:22,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-11-19 01:40:22,985 INFO L175 Difference]: Start difference. First operand has 76 places, 116 transitions, 1098 flow. Second operand 6 states and 135 transitions. [2024-11-19 01:40:22,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 189 transitions, 1941 flow [2024-11-19 01:40:22,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 189 transitions, 1919 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-19 01:40:23,001 INFO L231 Difference]: Finished difference. Result has 84 places, 125 transitions, 1204 flow [2024-11-19 01:40:23,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1204, PETRI_PLACES=84, PETRI_TRANSITIONS=125} [2024-11-19 01:40:23,001 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2024-11-19 01:40:23,002 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 125 transitions, 1204 flow [2024-11-19 01:40:23,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 01:40:23,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:23,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:23,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:40:23,002 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:23,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:23,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1394856322, now seen corresponding path program 4 times [2024-11-19 01:40:23,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:23,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972885586] [2024-11-19 01:40:23,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:40:23,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:23,025 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:40:23,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:23,082 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 01:40:23,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972885586] [2024-11-19 01:40:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972885586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:23,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:23,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:40:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738011335] [2024-11-19 01:40:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:23,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:40:23,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:40:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:40:23,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-19 01:40:23,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 125 transitions, 1204 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 01:40:23,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:23,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-19 01:40:23,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:23,377 INFO L124 PetriNetUnfolderBase]: 608/1283 cut-off events. [2024-11-19 01:40:23,377 INFO L125 PetriNetUnfolderBase]: For 4760/4830 co-relation queries the response was YES. [2024-11-19 01:40:23,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 1283 events. 608/1283 cut-off events. For 4760/4830 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7250 event pairs, 17 based on Foata normal form. 50/1332 useless extension candidates. Maximal degree in co-relation 5801. Up to 324 conditions per place. [2024-11-19 01:40:23,398 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 183 selfloop transitions, 45 changer transitions 0/251 dead transitions. [2024-11-19 01:40:23,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 251 transitions, 2696 flow [2024-11-19 01:40:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:40:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:40:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-11-19 01:40:23,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-19 01:40:23,399 INFO L175 Difference]: Start difference. First operand has 84 places, 125 transitions, 1204 flow. Second operand 7 states and 168 transitions. [2024-11-19 01:40:23,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 251 transitions, 2696 flow [2024-11-19 01:40:23,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 251 transitions, 2689 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 01:40:23,414 INFO L231 Difference]: Finished difference. Result has 90 places, 149 transitions, 1471 flow [2024-11-19 01:40:23,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1471, PETRI_PLACES=90, PETRI_TRANSITIONS=149} [2024-11-19 01:40:23,415 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2024-11-19 01:40:23,416 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 149 transitions, 1471 flow [2024-11-19 01:40:23,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 01:40:23,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:23,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:23,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:40:23,417 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:23,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -480300786, now seen corresponding path program 5 times [2024-11-19 01:40:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785170481] [2024-11-19 01:40:23,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:40:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:23,430 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:40:23,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:23,708 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 01:40:23,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785170481] [2024-11-19 01:40:23,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785170481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:23,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:23,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:40:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226906814] [2024-11-19 01:40:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:23,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:40:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:40:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:40:23,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 01:40:23,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 149 transitions, 1471 flow. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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 01:40:23,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:23,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 01:40:23,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:24,074 INFO L124 PetriNetUnfolderBase]: 727/1488 cut-off events. [2024-11-19 01:40:24,074 INFO L125 PetriNetUnfolderBase]: For 6363/6377 co-relation queries the response was YES. [2024-11-19 01:40:24,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7356 conditions, 1488 events. 727/1488 cut-off events. For 6363/6377 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8101 event pairs, 155 based on Foata normal form. 14/1498 useless extension candidates. Maximal degree in co-relation 7319. Up to 1029 conditions per place. [2024-11-19 01:40:24,086 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 118 selfloop transitions, 68 changer transitions 8/200 dead transitions. [2024-11-19 01:40:24,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 200 transitions, 2261 flow [2024-11-19 01:40:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:40:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:40:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-11-19 01:40:24,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-11-19 01:40:24,088 INFO L175 Difference]: Start difference. First operand has 90 places, 149 transitions, 1471 flow. Second operand 10 states and 154 transitions. [2024-11-19 01:40:24,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 200 transitions, 2261 flow [2024-11-19 01:40:24,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 200 transitions, 2215 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-11-19 01:40:24,111 INFO L231 Difference]: Finished difference. Result has 103 places, 163 transitions, 1801 flow [2024-11-19 01:40:24,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1801, PETRI_PLACES=103, PETRI_TRANSITIONS=163} [2024-11-19 01:40:24,112 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2024-11-19 01:40:24,112 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 163 transitions, 1801 flow [2024-11-19 01:40:24,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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 01:40:24,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:24,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:24,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:40:24,113 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:24,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1428128358, now seen corresponding path program 6 times [2024-11-19 01:40:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59673768] [2024-11-19 01:40:24,114 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:40:24,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:24,127 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:40:24,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:24,366 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 01:40:24,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59673768] [2024-11-19 01:40:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59673768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:24,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:24,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:40:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685442103] [2024-11-19 01:40:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:24,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:40:24,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:40:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:40:24,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 01:40:24,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 163 transitions, 1801 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 01:40:24,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:24,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 01:40:24,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:24,706 INFO L124 PetriNetUnfolderBase]: 606/1275 cut-off events. [2024-11-19 01:40:24,706 INFO L125 PetriNetUnfolderBase]: For 5882/5924 co-relation queries the response was YES. [2024-11-19 01:40:24,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 1275 events. 606/1275 cut-off events. For 5882/5924 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6967 event pairs, 144 based on Foata normal form. 41/1307 useless extension candidates. Maximal degree in co-relation 6347. Up to 894 conditions per place. [2024-11-19 01:40:24,716 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 108 selfloop transitions, 46 changer transitions 0/164 dead transitions. [2024-11-19 01:40:24,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 164 transitions, 1865 flow [2024-11-19 01:40:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:40:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:40:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-11-19 01:40:24,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-11-19 01:40:24,718 INFO L175 Difference]: Start difference. First operand has 103 places, 163 transitions, 1801 flow. Second operand 10 states and 163 transitions. [2024-11-19 01:40:24,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 164 transitions, 1865 flow [2024-11-19 01:40:24,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 1741 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-11-19 01:40:24,740 INFO L231 Difference]: Finished difference. Result has 101 places, 137 transitions, 1397 flow [2024-11-19 01:40:24,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1397, PETRI_PLACES=101, PETRI_TRANSITIONS=137} [2024-11-19 01:40:24,742 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 68 predicate places. [2024-11-19 01:40:24,742 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 1397 flow [2024-11-19 01:40:24,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 01:40:24,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:24,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:24,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:40:24,743 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:24,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1657798759, now seen corresponding path program 1 times [2024-11-19 01:40:24,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:24,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655214491] [2024-11-19 01:40:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:24,888 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 01:40:24,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:24,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655214491] [2024-11-19 01:40:24,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655214491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:24,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:24,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:40:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810909279] [2024-11-19 01:40:24,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:24,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:40:24,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:24,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:40:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:40:24,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-19 01:40:24,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 137 transitions, 1397 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 01:40:24,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:24,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-19 01:40:24,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:25,228 INFO L124 PetriNetUnfolderBase]: 717/1554 cut-off events. [2024-11-19 01:40:25,228 INFO L125 PetriNetUnfolderBase]: For 7027/7054 co-relation queries the response was YES. [2024-11-19 01:40:25,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7580 conditions, 1554 events. 717/1554 cut-off events. For 7027/7054 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9326 event pairs, 204 based on Foata normal form. 24/1571 useless extension candidates. Maximal degree in co-relation 7541. Up to 939 conditions per place. [2024-11-19 01:40:25,240 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 166 selfloop transitions, 36 changer transitions 0/219 dead transitions. [2024-11-19 01:40:25,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 219 transitions, 2455 flow [2024-11-19 01:40:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:40:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:40:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-11-19 01:40:25,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-11-19 01:40:25,242 INFO L175 Difference]: Start difference. First operand has 101 places, 137 transitions, 1397 flow. Second operand 9 states and 198 transitions. [2024-11-19 01:40:25,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 219 transitions, 2455 flow [2024-11-19 01:40:25,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 219 transitions, 2361 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-19 01:40:25,260 INFO L231 Difference]: Finished difference. Result has 106 places, 153 transitions, 1606 flow [2024-11-19 01:40:25,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1606, PETRI_PLACES=106, PETRI_TRANSITIONS=153} [2024-11-19 01:40:25,261 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2024-11-19 01:40:25,261 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 153 transitions, 1606 flow [2024-11-19 01:40:25,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 01:40:25,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:25,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:25,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:40:25,262 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:25,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1783523097, now seen corresponding path program 2 times [2024-11-19 01:40:25,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:25,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108304553] [2024-11-19 01:40:25,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:40:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:25,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:40:25,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:25,388 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 01:40:25,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:25,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108304553] [2024-11-19 01:40:25,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108304553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:25,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:25,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:40:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959667908] [2024-11-19 01:40:25,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:25,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:40:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:40:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:40:25,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-19 01:40:25,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 153 transitions, 1606 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 01:40:25,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:25,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-19 01:40:25,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:25,826 INFO L124 PetriNetUnfolderBase]: 934/2015 cut-off events. [2024-11-19 01:40:25,827 INFO L125 PetriNetUnfolderBase]: For 10562/10598 co-relation queries the response was YES. [2024-11-19 01:40:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10032 conditions, 2015 events. 934/2015 cut-off events. For 10562/10598 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13005 event pairs, 238 based on Foata normal form. 32/2040 useless extension candidates. Maximal degree in co-relation 9989. Up to 1255 conditions per place. [2024-11-19 01:40:25,843 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 198 selfloop transitions, 40 changer transitions 0/255 dead transitions. [2024-11-19 01:40:25,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 255 transitions, 2927 flow [2024-11-19 01:40:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:40:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:40:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-11-19 01:40:25,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-11-19 01:40:25,845 INFO L175 Difference]: Start difference. First operand has 106 places, 153 transitions, 1606 flow. Second operand 9 states and 198 transitions. [2024-11-19 01:40:25,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 255 transitions, 2927 flow [2024-11-19 01:40:25,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 255 transitions, 2866 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-19 01:40:25,874 INFO L231 Difference]: Finished difference. Result has 118 places, 173 transitions, 1934 flow [2024-11-19 01:40:25,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1934, PETRI_PLACES=118, PETRI_TRANSITIONS=173} [2024-11-19 01:40:25,875 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2024-11-19 01:40:25,875 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 173 transitions, 1934 flow [2024-11-19 01:40:25,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 01:40:25,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:25,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:25,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:40:25,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:25,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1574289331, now seen corresponding path program 1 times [2024-11-19 01:40:25,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638751048] [2024-11-19 01:40:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:26,004 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 01:40:26,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638751048] [2024-11-19 01:40:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638751048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:26,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:40:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589048751] [2024-11-19 01:40:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:26,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:40:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:40:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:40:26,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-19 01:40:26,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 173 transitions, 1934 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 01:40:26,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:26,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-19 01:40:26,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:26,488 INFO L124 PetriNetUnfolderBase]: 1162/2484 cut-off events. [2024-11-19 01:40:26,488 INFO L125 PetriNetUnfolderBase]: For 16117/16162 co-relation queries the response was YES. [2024-11-19 01:40:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13100 conditions, 2484 events. 1162/2484 cut-off events. For 16117/16162 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15967 event pairs, 256 based on Foata normal form. 39/2514 useless extension candidates. Maximal degree in co-relation 13051. Up to 687 conditions per place. [2024-11-19 01:40:26,508 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 216 selfloop transitions, 92 changer transitions 0/325 dead transitions. [2024-11-19 01:40:26,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 325 transitions, 3974 flow [2024-11-19 01:40:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:40:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:40:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-11-19 01:40:26,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5918918918918918 [2024-11-19 01:40:26,509 INFO L175 Difference]: Start difference. First operand has 118 places, 173 transitions, 1934 flow. Second operand 10 states and 219 transitions. [2024-11-19 01:40:26,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 325 transitions, 3974 flow [2024-11-19 01:40:26,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 325 transitions, 3819 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-11-19 01:40:26,550 INFO L231 Difference]: Finished difference. Result has 131 places, 221 transitions, 2771 flow [2024-11-19 01:40:26,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2771, PETRI_PLACES=131, PETRI_TRANSITIONS=221} [2024-11-19 01:40:26,551 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 98 predicate places. [2024-11-19 01:40:26,551 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 221 transitions, 2771 flow [2024-11-19 01:40:26,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 01:40:26,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:26,552 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:26,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:40:26,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:26,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:26,552 INFO L85 PathProgramCache]: Analyzing trace with hash -121013717, now seen corresponding path program 1 times [2024-11-19 01:40:26,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:26,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330977209] [2024-11-19 01:40:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:40:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330977209] [2024-11-19 01:40:26,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330977209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:40:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081428859] [2024-11-19 01:40:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:26,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:40:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:40:26,834 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 01:40:26,836 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 01:40:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:26,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 01:40:26,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:40:27,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 16 [2024-11-19 01:40:27,153 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 01:40:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:40:27,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:40:27,316 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-19 01:40:27,317 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 41 treesize of output 1 [2024-11-19 01:40:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:40:27,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081428859] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:40:27,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:40:27,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 21 [2024-11-19 01:40:27,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932756866] [2024-11-19 01:40:27,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:27,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:40:27,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:40:27,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:40:27,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-19 01:40:27,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 221 transitions, 2771 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 01:40:27,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:27,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-19 01:40:27,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:27,961 INFO L124 PetriNetUnfolderBase]: 1746/3664 cut-off events. [2024-11-19 01:40:27,961 INFO L125 PetriNetUnfolderBase]: For 25181/25227 co-relation queries the response was YES. [2024-11-19 01:40:27,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20040 conditions, 3664 events. 1746/3664 cut-off events. For 25181/25227 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 25394 event pairs, 123 based on Foata normal form. 37/3692 useless extension candidates. Maximal degree in co-relation 19984. Up to 1262 conditions per place. [2024-11-19 01:40:27,987 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 222 selfloop transitions, 144 changer transitions 2/383 dead transitions. [2024-11-19 01:40:27,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 383 transitions, 5283 flow [2024-11-19 01:40:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:40:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:40:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-19 01:40:27,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-11-19 01:40:27,989 INFO L175 Difference]: Start difference. First operand has 131 places, 221 transitions, 2771 flow. Second operand 7 states and 132 transitions. [2024-11-19 01:40:27,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 383 transitions, 5283 flow [2024-11-19 01:40:28,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 383 transitions, 4888 flow, removed 163 selfloop flow, removed 4 redundant places. [2024-11-19 01:40:28,060 INFO L231 Difference]: Finished difference. Result has 137 places, 279 transitions, 3687 flow [2024-11-19 01:40:28,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3687, PETRI_PLACES=137, PETRI_TRANSITIONS=279} [2024-11-19 01:40:28,061 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2024-11-19 01:40:28,061 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 279 transitions, 3687 flow [2024-11-19 01:40:28,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 01:40:28,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:28,062 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:28,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:40:28,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 01:40:28,262 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:28,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2048220433, now seen corresponding path program 2 times [2024-11-19 01:40:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:28,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343119759] [2024-11-19 01:40:28,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:40:28,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:28,276 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:40:28,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:40:28,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:28,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343119759] [2024-11-19 01:40:28,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343119759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:28,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:28,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:40:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474675952] [2024-11-19 01:40:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:28,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:40:28,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:28,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:40:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:40:28,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 01:40:28,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 279 transitions, 3687 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 01:40:28,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:28,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 01:40:28,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:29,161 INFO L124 PetriNetUnfolderBase]: 2354/4721 cut-off events. [2024-11-19 01:40:29,161 INFO L125 PetriNetUnfolderBase]: For 33782/33822 co-relation queries the response was YES. [2024-11-19 01:40:29,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27009 conditions, 4721 events. 2354/4721 cut-off events. For 33782/33822 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 32691 event pairs, 329 based on Foata normal form. 70/4777 useless extension candidates. Maximal degree in co-relation 26951. Up to 2088 conditions per place. [2024-11-19 01:40:29,203 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 274 selfloop transitions, 195 changer transitions 1/476 dead transitions. [2024-11-19 01:40:29,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 476 transitions, 6871 flow [2024-11-19 01:40:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:40:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:40:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-11-19 01:40:29,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-11-19 01:40:29,206 INFO L175 Difference]: Start difference. First operand has 137 places, 279 transitions, 3687 flow. Second operand 8 states and 138 transitions. [2024-11-19 01:40:29,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 476 transitions, 6871 flow [2024-11-19 01:40:29,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 476 transitions, 6792 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-11-19 01:40:29,426 INFO L231 Difference]: Finished difference. Result has 149 places, 376 transitions, 5843 flow [2024-11-19 01:40:29,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5843, PETRI_PLACES=149, PETRI_TRANSITIONS=376} [2024-11-19 01:40:29,431 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2024-11-19 01:40:29,431 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 376 transitions, 5843 flow [2024-11-19 01:40:29,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 01:40:29,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:29,431 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:29,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:40:29,432 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:29,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2057157733, now seen corresponding path program 3 times [2024-11-19 01:40:29,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:29,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720970820] [2024-11-19 01:40:29,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:40:29,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:29,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:40:29,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:40:29,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:29,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720970820] [2024-11-19 01:40:29,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720970820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:29,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:29,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:40:29,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102246807] [2024-11-19 01:40:29,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:29,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:40:29,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:40:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:40:29,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 01:40:29,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 376 transitions, 5843 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 01:40:29,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:29,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 01:40:29,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:30,720 INFO L124 PetriNetUnfolderBase]: 2731/5428 cut-off events. [2024-11-19 01:40:30,721 INFO L125 PetriNetUnfolderBase]: For 54940/54964 co-relation queries the response was YES. [2024-11-19 01:40:30,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35356 conditions, 5428 events. 2731/5428 cut-off events. For 54940/54964 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 37947 event pairs, 346 based on Foata normal form. 110/5531 useless extension candidates. Maximal degree in co-relation 35292. Up to 2534 conditions per place. [2024-11-19 01:40:30,766 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 374 selfloop transitions, 157 changer transitions 1/538 dead transitions. [2024-11-19 01:40:30,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 538 transitions, 8964 flow [2024-11-19 01:40:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:40:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:40:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-11-19 01:40:30,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-11-19 01:40:30,772 INFO L175 Difference]: Start difference. First operand has 149 places, 376 transitions, 5843 flow. Second operand 7 states and 123 transitions. [2024-11-19 01:40:30,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 538 transitions, 8964 flow [2024-11-19 01:40:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 538 transitions, 8932 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-19 01:40:30,971 INFO L231 Difference]: Finished difference. Result has 159 places, 421 transitions, 7146 flow [2024-11-19 01:40:30,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7146, PETRI_PLACES=159, PETRI_TRANSITIONS=421} [2024-11-19 01:40:30,974 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 126 predicate places. [2024-11-19 01:40:30,974 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 421 transitions, 7146 flow [2024-11-19 01:40:30,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 01:40:30,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:30,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:30,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:40:30,974 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:30,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2123911676, now seen corresponding path program 1 times [2024-11-19 01:40:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733957306] [2024-11-19 01:40:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:40:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:31,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733957306] [2024-11-19 01:40:31,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733957306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:31,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:40:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:40:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408644819] [2024-11-19 01:40:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:31,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:40:31,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:40:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:40:31,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-19 01:40:31,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 421 transitions, 7146 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 01:40:31,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:31,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-19 01:40:31,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:32,016 INFO L124 PetriNetUnfolderBase]: 2339/4900 cut-off events. [2024-11-19 01:40:32,017 INFO L125 PetriNetUnfolderBase]: For 64580/64751 co-relation queries the response was YES. [2024-11-19 01:40:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34714 conditions, 4900 events. 2339/4900 cut-off events. For 64580/64751 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 35090 event pairs, 581 based on Foata normal form. 9/4855 useless extension candidates. Maximal degree in co-relation 34645. Up to 4232 conditions per place. [2024-11-19 01:40:32,063 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 352 selfloop transitions, 8 changer transitions 19/392 dead transitions. [2024-11-19 01:40:32,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 392 transitions, 7209 flow [2024-11-19 01:40:32,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:40:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:40:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-11-19 01:40:32,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-11-19 01:40:32,065 INFO L175 Difference]: Start difference. First operand has 159 places, 421 transitions, 7146 flow. Second operand 5 states and 95 transitions. [2024-11-19 01:40:32,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 392 transitions, 7209 flow [2024-11-19 01:40:32,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 392 transitions, 6983 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-11-19 01:40:32,288 INFO L231 Difference]: Finished difference. Result has 161 places, 372 transitions, 5997 flow [2024-11-19 01:40:32,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6174, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5997, PETRI_PLACES=161, PETRI_TRANSITIONS=372} [2024-11-19 01:40:32,289 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2024-11-19 01:40:32,289 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 372 transitions, 5997 flow [2024-11-19 01:40:32,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 01:40:32,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:32,289 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:32,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:40:32,289 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:32,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash -378373531, now seen corresponding path program 4 times [2024-11-19 01:40:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205757993] [2024-11-19 01:40:32,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:40:32,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:32,304 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:40:32,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:40:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205757993] [2024-11-19 01:40:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205757993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:40:32,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301770513] [2024-11-19 01:40:32,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:40:32,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:40:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:40:32,435 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 01:40:32,439 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 01:40:32,506 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:40:32,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:40:32,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 01:40:32,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:40:32,550 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 13 treesize of output 9 [2024-11-19 01:40:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:40:32,563 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:40:32,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301770513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:40:32,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:40:32,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-19 01:40:32,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100358630] [2024-11-19 01:40:32,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:40:32,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:40:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:32,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:40:32,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:40:32,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-19 01:40:32,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 372 transitions, 5997 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:40:32,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:32,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-19 01:40:32,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:32,949 INFO L124 PetriNetUnfolderBase]: 385/943 cut-off events. [2024-11-19 01:40:32,949 INFO L125 PetriNetUnfolderBase]: For 14262/14312 co-relation queries the response was YES. [2024-11-19 01:40:32,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6881 conditions, 943 events. 385/943 cut-off events. For 14262/14312 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4911 event pairs, 12 based on Foata normal form. 72/1009 useless extension candidates. Maximal degree in co-relation 6819. Up to 250 conditions per place. [2024-11-19 01:40:32,961 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 105 selfloop transitions, 152 changer transitions 0/274 dead transitions. [2024-11-19 01:40:32,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 274 transitions, 5121 flow [2024-11-19 01:40:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:40:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:40:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-11-19 01:40:32,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2024-11-19 01:40:32,963 INFO L175 Difference]: Start difference. First operand has 161 places, 372 transitions, 5997 flow. Second operand 6 states and 122 transitions. [2024-11-19 01:40:32,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 274 transitions, 5121 flow [2024-11-19 01:40:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 274 transitions, 4263 flow, removed 31 selfloop flow, removed 40 redundant places. [2024-11-19 01:40:33,013 INFO L231 Difference]: Finished difference. Result has 118 places, 255 transitions, 4066 flow [2024-11-19 01:40:33,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4066, PETRI_PLACES=118, PETRI_TRANSITIONS=255} [2024-11-19 01:40:33,014 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2024-11-19 01:40:33,014 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 255 transitions, 4066 flow [2024-11-19 01:40:33,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:40:33,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:40:33,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:40:33,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 01:40:33,216 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,SelfDestructingSolverStorable15 [2024-11-19 01:40:33,217 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-19 01:40:33,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:40:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1315968619, now seen corresponding path program 1 times [2024-11-19 01:40:33,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:40:33,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105809516] [2024-11-19 01:40:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:33,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:40:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:40:33,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:40:33,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105809516] [2024-11-19 01:40:33,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105809516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:40:33,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009904952] [2024-11-19 01:40:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:40:33,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:40:33,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:40:33,580 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 01:40:33,581 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 01:40:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:40:33,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-19 01:40:33,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:40:33,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2024-11-19 01:40:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:40:33,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:40:34,181 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-19 01:40:34,182 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 71 treesize of output 55 [2024-11-19 01:40:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:40:34,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009904952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:40:34,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:40:34,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2024-11-19 01:40:34,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53892444] [2024-11-19 01:40:34,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:40:34,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 01:40:34,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:40:34,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 01:40:34,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-11-19 01:40:34,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 01:40:34,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 255 transitions, 4066 flow. Second operand has 26 states, 26 states have (on average 9.5) internal successors, (247), 26 states have internal predecessors, (247), 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 01:40:34,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:40:34,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 01:40:34,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:40:35,185 INFO L124 PetriNetUnfolderBase]: 635/1471 cut-off events. [2024-11-19 01:40:35,185 INFO L125 PetriNetUnfolderBase]: For 16075/16155 co-relation queries the response was YES. [2024-11-19 01:40:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10040 conditions, 1471 events. 635/1471 cut-off events. For 16075/16155 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8297 event pairs, 63 based on Foata normal form. 28/1497 useless extension candidates. Maximal degree in co-relation 9996. Up to 404 conditions per place. [2024-11-19 01:40:35,193 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 0 selfloop transitions, 0 changer transitions 448/448 dead transitions. [2024-11-19 01:40:35,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 448 transitions, 7612 flow [2024-11-19 01:40:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 01:40:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 01:40:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 290 transitions. [2024-11-19 01:40:35,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3407755581668625 [2024-11-19 01:40:35,195 INFO L175 Difference]: Start difference. First operand has 118 places, 255 transitions, 4066 flow. Second operand 23 states and 290 transitions. [2024-11-19 01:40:35,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 448 transitions, 7612 flow [2024-11-19 01:40:35,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 448 transitions, 7211 flow, removed 135 selfloop flow, removed 1 redundant places. [2024-11-19 01:40:35,234 INFO L231 Difference]: Finished difference. Result has 137 places, 0 transitions, 0 flow [2024-11-19 01:40:35,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=137, PETRI_TRANSITIONS=0} [2024-11-19 01:40:35,235 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2024-11-19 01:40:35,235 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 0 transitions, 0 flow [2024-11-19 01:40:35,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.5) internal successors, (247), 26 states have internal predecessors, (247), 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 01:40:35,238 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-19 01:40:35,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-19 01:40:35,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-19 01:40:35,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-19 01:40:35,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-19 01:40:35,254 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 01:40:35,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:40:35,440 INFO L407 BasicCegarLoop]: Path program histogram: [6, 4, 2, 1, 1, 1, 1, 1] [2024-11-19 01:40:35,446 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:40:35,446 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:40:35,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:40:35 BasicIcfg [2024-11-19 01:40:35,451 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:40:35,452 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:40:35,452 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:40:35,452 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:40:35,452 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:40:19" (3/4) ... [2024-11-19 01:40:35,454 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 01:40:35,456 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-11-19 01:40:35,462 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2024-11-19 01:40:35,463 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-19 01:40:35,463 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-19 01:40:35,463 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 01:40:35,543 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:40:35,544 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 01:40:35,544 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:40:35,544 INFO L158 Benchmark]: Toolchain (without parser) took 16877.47ms. Allocated memory was 136.3MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 65.2MB in the beginning and 714.1MB in the end (delta: -648.8MB). Peak memory consumption was 561.5MB. Max. memory is 16.1GB. [2024-11-19 01:40:35,545 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:40:35,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.38ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 65.1MB in the beginning and 128.5MB in the end (delta: -63.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-11-19 01:40:35,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.49ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 126.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:40:35,545 INFO L158 Benchmark]: Boogie Preprocessor took 37.09ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 124.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:40:35,546 INFO L158 Benchmark]: RCFGBuilder took 592.14ms. Allocated memory is still 174.1MB. Free memory was 124.3MB in the beginning and 90.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-19 01:40:35,546 INFO L158 Benchmark]: TraceAbstraction took 15573.88ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 89.7MB in the beginning and 718.3MB in the end (delta: -628.5MB). Peak memory consumption was 545.9MB. Max. memory is 16.1GB. [2024-11-19 01:40:35,546 INFO L158 Benchmark]: Witness Printer took 92.29ms. Allocated memory is still 1.3GB. Free memory was 718.3MB in the beginning and 714.1MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:40:35,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.38ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 65.1MB in the beginning and 128.5MB in the end (delta: -63.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.49ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 126.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.09ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 124.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 592.14ms. Allocated memory is still 174.1MB. Free memory was 124.3MB in the beginning and 90.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15573.88ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 89.7MB in the beginning and 718.3MB in the end (delta: -628.5MB). Peak memory consumption was 545.9MB. Max. memory is 16.1GB. * Witness Printer took 92.29ms. Allocated memory is still 1.3GB. Free memory was 718.3MB in the beginning and 714.1MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 54 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.5s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1165 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1128 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4056 IncrementalHoareTripleChecker+Invalid, 4155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 36 mSDtfsCounter, 4056 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 314 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7146occurred in iteration=14, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 357 NumberOfCodeBlocks, 329 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 382 ConstructedInterpolants, 5 QuantifiedInterpolants, 2848 SizeOfPredicates, 44 NumberOfNonLiveVariables, 464 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 38/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 01:40:35,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE