./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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/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-?-c7c6ca5-m [2024-11-09 02:36:03,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:36:03,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:36:03,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:36:03,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:36:03,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:36:03,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:36:03,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:36:03,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:36:03,784 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:36:03,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:36:03,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:36:03,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:36:03,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:36:03,786 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:36:03,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:36:03,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:36:03,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:36:03,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:36:03,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:36:03,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:36:03,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:36:03,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:36:03,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:36:03,792 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:36:03,792 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:36:03,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:36:03,793 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:36:03,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:36:03,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:36:03,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:36:03,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:36:03,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:36:03,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:36:03,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:36:03,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:36:03,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:36:03,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:36:03,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:36:03,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:36:03,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:36:03,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:36:03,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-11-09 02:36:04,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:36:04,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:36:04,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:36:04,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:36:04,068 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:36:04,070 INFO L431 ainManager$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 [2024-11-09 02:36:05,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:36:05,679 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:36:05,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-09 02:36:05,691 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59156b738/3fff728a87724a429d97bc163d240df9/FLAGb838c910e [2024-11-09 02:36:05,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59156b738/3fff728a87724a429d97bc163d240df9 [2024-11-09 02:36:05,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:36:05,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:36:05,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:36:05,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:36:05,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:36:05,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:36:05" (1/1) ... [2024-11-09 02:36:05,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4306221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:05, skipping insertion in model container [2024-11-09 02:36:05,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:36:05" (1/1) ... [2024-11-09 02:36:05,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:36:05,984 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] [2024-11-09 02:36:06,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:36:06,164 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:36:06,175 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] [2024-11-09 02:36:06,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:36:06,250 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:36:06,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06 WrapperNode [2024-11-09 02:36:06,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:36:06,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:36:06,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:36:06,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:36:06,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,342 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 119 [2024-11-09 02:36:06,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:36:06,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:36:06,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:36:06,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:36:06,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,414 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]. [2024-11-09 02:36:06,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:36:06,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:36:06,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:36:06,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:36:06,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (1/1) ... [2024-11-09 02:36:06,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:36:06,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:36:06,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:36:06,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:36:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:36:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:36:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-09 02:36:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-09 02:36:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:36:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:36:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:36:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:36:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:36:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:36:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:36:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:36:06,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:36:06,578 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:36:06,789 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:36:06,791 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:36:06,975 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:36:06,975 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:36:07,142 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:36:07,142 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 02:36:07,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:36:07 BoogieIcfgContainer [2024-11-09 02:36:07,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:36:07,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:36:07,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:36:07,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:36:07,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:36:05" (1/3) ... [2024-11-09 02:36:07,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d5ca88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:36:07, skipping insertion in model container [2024-11-09 02:36:07,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:36:06" (2/3) ... [2024-11-09 02:36:07,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d5ca88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:36:07, skipping insertion in model container [2024-11-09 02:36:07,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:36:07" (3/3) ... [2024-11-09 02:36:07,152 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-09 02:36:07,167 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:36:07,167 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 02:36:07,167 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:36:07,206 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:36:07,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 37 transitions, 78 flow [2024-11-09 02:36:07,266 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-09 02:36:07,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:36:07,268 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. [2024-11-09 02:36:07,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 37 transitions, 78 flow [2024-11-09 02:36:07,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 75 flow [2024-11-09 02:36:07,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:36:07,288 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;@57f066a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:36:07,288 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:36:07,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:36:07,297 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-11-09 02:36:07,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:36:07,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:07,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:07,298 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:07,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1096289878, now seen corresponding path program 1 times [2024-11-09 02:36:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:07,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316748206] [2024-11-09 02:36:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:07,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316748206] [2024-11-09 02:36:07,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316748206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:07,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:07,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:36:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449320133] [2024-11-09 02:36:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:07,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:36:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:07,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:36:07,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:36:07,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 02:36:07,860 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) [2024-11-09 02:36:07,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:07,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 02:36:07,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:08,087 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-11-09 02:36:08,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:36:08,088 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. [2024-11-09 02:36:08,092 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 47 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-11-09 02:36:08,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 265 flow [2024-11-09 02:36:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:36:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:36:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-11-09 02:36:08,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536036036036036 [2024-11-09 02:36:08,103 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 75 flow. Second operand 6 states and 119 transitions. [2024-11-09 02:36:08,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 265 flow [2024-11-09 02:36:08,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:36:08,107 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 168 flow [2024-11-09 02:36:08,109 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} [2024-11-09 02:36:08,112 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-11-09 02:36:08,112 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 168 flow [2024-11-09 02:36:08,112 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) [2024-11-09 02:36:08,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:08,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:08,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:36:08,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:08,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 374721697, now seen corresponding path program 1 times [2024-11-09 02:36:08,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:08,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259440077] [2024-11-09 02:36:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:08,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:08,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259440077] [2024-11-09 02:36:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259440077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:08,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:36:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147836446] [2024-11-09 02:36:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:08,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:36:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:36:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:36:08,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 02:36:08,242 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) [2024-11-09 02:36:08,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:08,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 02:36:08,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:08,436 INFO L124 PetriNetUnfolderBase]: 278/559 cut-off events. [2024-11-09 02:36:08,436 INFO L125 PetriNetUnfolderBase]: For 185/187 co-relation queries the response was YES. [2024-11-09 02:36:08,440 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. [2024-11-09 02:36:08,444 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 58 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-11-09 02:36:08,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 474 flow [2024-11-09 02:36:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:36:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:36:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-09 02:36:08,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-11-09 02:36:08,447 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 168 flow. Second operand 6 states and 108 transitions. [2024-11-09 02:36:08,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 474 flow [2024-11-09 02:36:08,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:36:08,458 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 366 flow [2024-11-09 02:36:08,459 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} [2024-11-09 02:36:08,460 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-11-09 02:36:08,460 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 366 flow [2024-11-09 02:36:08,461 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) [2024-11-09 02:36:08,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:08,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:08,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:36:08,461 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:08,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1532167700, now seen corresponding path program 1 times [2024-11-09 02:36:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:08,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406777203] [2024-11-09 02:36:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406777203] [2024-11-09 02:36:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406777203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:36:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820401038] [2024-11-09 02:36:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:08,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:36:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:36:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:36:08,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-09 02:36:08,839 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) [2024-11-09 02:36:08,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:08,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-09 02:36:08,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:09,226 INFO L124 PetriNetUnfolderBase]: 399/859 cut-off events. [2024-11-09 02:36:09,227 INFO L125 PetriNetUnfolderBase]: For 1246/1263 co-relation queries the response was YES. [2024-11-09 02:36:09,230 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. [2024-11-09 02:36:09,234 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2024-11-09 02:36:09,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 127 transitions, 942 flow [2024-11-09 02:36:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:36:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:36:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-11-09 02:36:09,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6138996138996139 [2024-11-09 02:36:09,241 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 366 flow. Second operand 7 states and 159 transitions. [2024-11-09 02:36:09,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 127 transitions, 942 flow [2024-11-09 02:36:09,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 127 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:36:09,258 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 588 flow [2024-11-09 02:36:09,258 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} [2024-11-09 02:36:09,259 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2024-11-09 02:36:09,259 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 588 flow [2024-11-09 02:36:09,259 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) [2024-11-09 02:36:09,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:09,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:09,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:36:09,263 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:09,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -178204838, now seen corresponding path program 2 times [2024-11-09 02:36:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012349431] [2024-11-09 02:36:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:09,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012349431] [2024-11-09 02:36:09,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012349431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:09,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:09,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:36:09,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382040900] [2024-11-09 02:36:09,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:09,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:36:09,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:09,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:36:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:36:09,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 02:36:09,655 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) [2024-11-09 02:36:09,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:09,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 02:36:09,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:10,011 INFO L124 PetriNetUnfolderBase]: 485/974 cut-off events. [2024-11-09 02:36:10,011 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2024-11-09 02:36:10,014 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. [2024-11-09 02:36:10,018 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 77 selfloop transitions, 67 changer transitions 0/150 dead transitions. [2024-11-09 02:36:10,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 150 transitions, 1398 flow [2024-11-09 02:36:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:36:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:36:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2024-11-09 02:36:10,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39293139293139295 [2024-11-09 02:36:10,021 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 588 flow. Second operand 13 states and 189 transitions. [2024-11-09 02:36:10,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 150 transitions, 1398 flow [2024-11-09 02:36:10,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 150 transitions, 1358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:36:10,030 INFO L231 Difference]: Finished difference. Result has 76 places, 116 transitions, 1098 flow [2024-11-09 02:36:10,030 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} [2024-11-09 02:36:10,031 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2024-11-09 02:36:10,031 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 116 transitions, 1098 flow [2024-11-09 02:36:10,031 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) [2024-11-09 02:36:10,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:10,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:10,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:36:10,032 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:10,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1362561722, now seen corresponding path program 3 times [2024-11-09 02:36:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:10,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133891640] [2024-11-09 02:36:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:10,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:10,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:10,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133891640] [2024-11-09 02:36:10,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133891640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:10,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:36:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671327575] [2024-11-09 02:36:10,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:10,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:36:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:10,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:36:10,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:36:10,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-09 02:36:10,195 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) [2024-11-09 02:36:10,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:10,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-09 02:36:10,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:10,398 INFO L124 PetriNetUnfolderBase]: 466/1016 cut-off events. [2024-11-09 02:36:10,398 INFO L125 PetriNetUnfolderBase]: For 2829/2866 co-relation queries the response was YES. [2024-11-09 02:36:10,402 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. [2024-11-09 02:36:10,406 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 25 changer transitions 0/189 dead transitions. [2024-11-09 02:36:10,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 189 transitions, 1941 flow [2024-11-09 02:36:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:36:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:36:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-11-09 02:36:10,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-11-09 02:36:10,407 INFO L175 Difference]: Start difference. First operand has 76 places, 116 transitions, 1098 flow. Second operand 6 states and 135 transitions. [2024-11-09 02:36:10,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 189 transitions, 1941 flow [2024-11-09 02:36:10,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 189 transitions, 1919 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-09 02:36:10,420 INFO L231 Difference]: Finished difference. Result has 84 places, 125 transitions, 1204 flow [2024-11-09 02:36:10,420 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} [2024-11-09 02:36:10,421 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2024-11-09 02:36:10,421 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 125 transitions, 1204 flow [2024-11-09 02:36:10,421 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) [2024-11-09 02:36:10,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:10,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:10,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:36:10,421 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:10,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1394856322, now seen corresponding path program 4 times [2024-11-09 02:36:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:10,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323381791] [2024-11-09 02:36:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:10,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:10,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323381791] [2024-11-09 02:36:10,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323381791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:10,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:36:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633188085] [2024-11-09 02:36:10,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:10,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:36:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:36:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:36:10,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-09 02:36:10,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 125 transitions, 1204 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) [2024-11-09 02:36:10,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:10,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-09 02:36:10,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:10,873 INFO L124 PetriNetUnfolderBase]: 674/1469 cut-off events. [2024-11-09 02:36:10,873 INFO L125 PetriNetUnfolderBase]: For 5661/5689 co-relation queries the response was YES. [2024-11-09 02:36:10,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 1469 events. 674/1469 cut-off events. For 5661/5689 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8676 event pairs, 175 based on Foata normal form. 21/1482 useless extension candidates. Maximal degree in co-relation 6640. Up to 763 conditions per place. [2024-11-09 02:36:10,887 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 134 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2024-11-09 02:36:10,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 197 transitions, 2105 flow [2024-11-09 02:36:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:36:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:36:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-09 02:36:10,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640926640926641 [2024-11-09 02:36:10,888 INFO L175 Difference]: Start difference. First operand has 84 places, 125 transitions, 1204 flow. Second operand 7 states and 166 transitions. [2024-11-09 02:36:10,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 197 transitions, 2105 flow [2024-11-09 02:36:10,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 197 transitions, 2096 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 02:36:10,910 INFO L231 Difference]: Finished difference. Result has 91 places, 135 transitions, 1449 flow [2024-11-09 02:36:10,910 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=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=91, PETRI_TRANSITIONS=135} [2024-11-09 02:36:10,911 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2024-11-09 02:36:10,911 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 135 transitions, 1449 flow [2024-11-09 02:36:10,911 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) [2024-11-09 02:36:10,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:10,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:10,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:36:10,912 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:10,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1697026510, now seen corresponding path program 5 times [2024-11-09 02:36:10,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:10,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781334907] [2024-11-09 02:36:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:11,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:11,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781334907] [2024-11-09 02:36:11,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781334907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:11,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:11,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:36:11,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747559394] [2024-11-09 02:36:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:11,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:36:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:36:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:36:11,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-09 02:36:11,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 135 transitions, 1449 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) [2024-11-09 02:36:11,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:11,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-09 02:36:11,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:11,394 INFO L124 PetriNetUnfolderBase]: 835/1837 cut-off events. [2024-11-09 02:36:11,395 INFO L125 PetriNetUnfolderBase]: For 8545/8570 co-relation queries the response was YES. [2024-11-09 02:36:11,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8564 conditions, 1837 events. 835/1837 cut-off events. For 8545/8570 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11105 event pairs, 212 based on Foata normal form. 24/1855 useless extension candidates. Maximal degree in co-relation 8525. Up to 621 conditions per place. [2024-11-09 02:36:11,409 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 162 selfloop transitions, 48 changer transitions 0/228 dead transitions. [2024-11-09 02:36:11,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 228 transitions, 2565 flow [2024-11-09 02:36:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:36:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:36:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-11-09 02:36:11,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-09 02:36:11,410 INFO L175 Difference]: Start difference. First operand has 91 places, 135 transitions, 1449 flow. Second operand 7 states and 168 transitions. [2024-11-09 02:36:11,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 228 transitions, 2565 flow [2024-11-09 02:36:11,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 228 transitions, 2510 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-09 02:36:11,434 INFO L231 Difference]: Finished difference. Result has 98 places, 148 transitions, 1728 flow [2024-11-09 02:36:11,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1728, PETRI_PLACES=98, PETRI_TRANSITIONS=148} [2024-11-09 02:36:11,435 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 65 predicate places. [2024-11-09 02:36:11,435 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 148 transitions, 1728 flow [2024-11-09 02:36:11,435 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) [2024-11-09 02:36:11,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:11,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:11,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:36:11,436 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:11,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash -369696630, now seen corresponding path program 6 times [2024-11-09 02:36:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906741439] [2024-11-09 02:36:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906741439] [2024-11-09 02:36:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906741439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:11,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:11,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:36:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16672905] [2024-11-09 02:36:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:11,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:36:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:36:11,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:36:11,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 02:36:11,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 148 transitions, 1728 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) [2024-11-09 02:36:11,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:11,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 02:36:11,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:12,087 INFO L124 PetriNetUnfolderBase]: 927/1931 cut-off events. [2024-11-09 02:36:12,087 INFO L125 PetriNetUnfolderBase]: For 10042/10125 co-relation queries the response was YES. [2024-11-09 02:36:12,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9295 conditions, 1931 events. 927/1931 cut-off events. For 10042/10125 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11197 event pairs, 232 based on Foata normal form. 80/1995 useless extension candidates. Maximal degree in co-relation 9253. Up to 1355 conditions per place. [2024-11-09 02:36:12,103 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 111 selfloop transitions, 69 changer transitions 0/193 dead transitions. [2024-11-09 02:36:12,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 193 transitions, 2443 flow [2024-11-09 02:36:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:36:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:36:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-11-09 02:36:12,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-11-09 02:36:12,104 INFO L175 Difference]: Start difference. First operand has 98 places, 148 transitions, 1728 flow. Second operand 9 states and 150 transitions. [2024-11-09 02:36:12,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 193 transitions, 2443 flow [2024-11-09 02:36:12,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 193 transitions, 2317 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-11-09 02:36:12,133 INFO L231 Difference]: Finished difference. Result has 107 places, 165 transitions, 2034 flow [2024-11-09 02:36:12,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2034, PETRI_PLACES=107, PETRI_TRANSITIONS=165} [2024-11-09 02:36:12,134 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 74 predicate places. [2024-11-09 02:36:12,134 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 165 transitions, 2034 flow [2024-11-09 02:36:12,134 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) [2024-11-09 02:36:12,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:12,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:12,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:36:12,135 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:12,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1428128358, now seen corresponding path program 7 times [2024-11-09 02:36:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:12,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890712991] [2024-11-09 02:36:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:12,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:12,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890712991] [2024-11-09 02:36:12,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890712991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:12,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:12,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:36:12,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630449497] [2024-11-09 02:36:12,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:12,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:36:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:36:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:36:12,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-09 02:36:12,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 165 transitions, 2034 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) [2024-11-09 02:36:12,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:12,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-09 02:36:12,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:12,546 INFO L124 PetriNetUnfolderBase]: 715/1613 cut-off events. [2024-11-09 02:36:12,547 INFO L125 PetriNetUnfolderBase]: For 8287/8360 co-relation queries the response was YES. [2024-11-09 02:36:12,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7831 conditions, 1613 events. 715/1613 cut-off events. For 8287/8360 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9931 event pairs, 62 based on Foata normal form. 88/1687 useless extension candidates. Maximal degree in co-relation 7785. Up to 631 conditions per place. [2024-11-09 02:36:12,560 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 67 changer transitions 0/230 dead transitions. [2024-11-09 02:36:12,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 230 transitions, 2859 flow [2024-11-09 02:36:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:36:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:36:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-09 02:36:12,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2024-11-09 02:36:12,562 INFO L175 Difference]: Start difference. First operand has 107 places, 165 transitions, 2034 flow. Second operand 6 states and 130 transitions. [2024-11-09 02:36:12,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 230 transitions, 2859 flow [2024-11-09 02:36:12,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 230 transitions, 2675 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-11-09 02:36:12,585 INFO L231 Difference]: Finished difference. Result has 107 places, 164 transitions, 1937 flow [2024-11-09 02:36:12,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1937, PETRI_PLACES=107, PETRI_TRANSITIONS=164} [2024-11-09 02:36:12,586 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 74 predicate places. [2024-11-09 02:36:12,586 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 164 transitions, 1937 flow [2024-11-09 02:36:12,587 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) [2024-11-09 02:36:12,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:12,587 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:12,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:36:12,587 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:12,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:12,587 INFO L85 PathProgramCache]: Analyzing trace with hash 307488961, now seen corresponding path program 1 times [2024-11-09 02:36:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:12,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77456990] [2024-11-09 02:36:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:12,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77456990] [2024-11-09 02:36:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77456990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:36:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145679600] [2024-11-09 02:36:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:12,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:36:12,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:36:12,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:36:12,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:36:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:12,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 02:36:12,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:36:13,136 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 [2024-11-09 02:36:13,164 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 [2024-11-09 02:36:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:13,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:36:13,413 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-09 02:36:13,413 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 [2024-11-09 02:36:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:13,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145679600] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:36:13,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:36:13,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 21 [2024-11-09 02:36:13,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050746599] [2024-11-09 02:36:13,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:13,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:36:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:36:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:36:13,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-09 02:36:13,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 164 transitions, 1937 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) [2024-11-09 02:36:13,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:13,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-09 02:36:13,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:13,896 INFO L124 PetriNetUnfolderBase]: 1155/2496 cut-off events. [2024-11-09 02:36:13,897 INFO L125 PetriNetUnfolderBase]: For 13498/13548 co-relation queries the response was YES. [2024-11-09 02:36:13,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12922 conditions, 2496 events. 1155/2496 cut-off events. For 13498/13548 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16116 event pairs, 88 based on Foata normal form. 27/2514 useless extension candidates. Maximal degree in co-relation 12875. Up to 827 conditions per place. [2024-11-09 02:36:13,922 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 145 selfloop transitions, 126 changer transitions 0/285 dead transitions. [2024-11-09 02:36:13,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 285 transitions, 3748 flow [2024-11-09 02:36:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:36:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:36:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-09 02:36:13,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-11-09 02:36:13,924 INFO L175 Difference]: Start difference. First operand has 107 places, 164 transitions, 1937 flow. Second operand 7 states and 132 transitions. [2024-11-09 02:36:13,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 285 transitions, 3748 flow [2024-11-09 02:36:13,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 285 transitions, 3596 flow, removed 71 selfloop flow, removed 2 redundant places. [2024-11-09 02:36:13,962 INFO L231 Difference]: Finished difference. Result has 115 places, 224 transitions, 3013 flow [2024-11-09 02:36:13,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3013, PETRI_PLACES=115, PETRI_TRANSITIONS=224} [2024-11-09 02:36:13,963 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 82 predicate places. [2024-11-09 02:36:13,963 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 224 transitions, 3013 flow [2024-11-09 02:36:13,963 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) [2024-11-09 02:36:13,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:13,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:13,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:36:14,167 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,SelfDestructingSolverStorable9 [2024-11-09 02:36:14,168 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:14,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash 555639181, now seen corresponding path program 2 times [2024-11-09 02:36:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995055120] [2024-11-09 02:36:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:14,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:14,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:14,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995055120] [2024-11-09 02:36:14,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995055120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:36:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874741405] [2024-11-09 02:36:14,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:36:14,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:36:14,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:36:14,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:36:14,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:36:14,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:36:14,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:36:14,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:36:14,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:36:14,654 INFO L349 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2024-11-09 02:36:14,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 43 [2024-11-09 02:36:14,761 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 [2024-11-09 02:36:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:36:14,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:36:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874741405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:14,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:36:14,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2024-11-09 02:36:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545146200] [2024-11-09 02:36:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:14,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:36:14,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:36:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:36:14,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-09 02:36:14,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 224 transitions, 3013 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:36:14,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:14,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-09 02:36:14,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:15,191 INFO L124 PetriNetUnfolderBase]: 1095/2371 cut-off events. [2024-11-09 02:36:15,191 INFO L125 PetriNetUnfolderBase]: For 16593/16636 co-relation queries the response was YES. [2024-11-09 02:36:15,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13368 conditions, 2371 events. 1095/2371 cut-off events. For 16593/16636 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15107 event pairs, 141 based on Foata normal form. 61/2425 useless extension candidates. Maximal degree in co-relation 13318. Up to 964 conditions per place. [2024-11-09 02:36:15,208 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 128 selfloop transitions, 122 changer transitions 0/263 dead transitions. [2024-11-09 02:36:15,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 263 transitions, 3839 flow [2024-11-09 02:36:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:36:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:36:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-11-09 02:36:15,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-11-09 02:36:15,209 INFO L175 Difference]: Start difference. First operand has 115 places, 224 transitions, 3013 flow. Second operand 5 states and 91 transitions. [2024-11-09 02:36:15,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 263 transitions, 3839 flow [2024-11-09 02:36:15,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 263 transitions, 3759 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-11-09 02:36:15,248 INFO L231 Difference]: Finished difference. Result has 115 places, 222 transitions, 3167 flow [2024-11-09 02:36:15,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3167, PETRI_PLACES=115, PETRI_TRANSITIONS=222} [2024-11-09 02:36:15,249 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 82 predicate places. [2024-11-09 02:36:15,249 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 222 transitions, 3167 flow [2024-11-09 02:36:15,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:36:15,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:15,249 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:15,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:36:15,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 02:36:15,451 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:15,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2123911676, now seen corresponding path program 1 times [2024-11-09 02:36:15,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:15,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663603021] [2024-11-09 02:36:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663603021] [2024-11-09 02:36:15,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663603021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:15,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:15,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:36:15,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782737500] [2024-11-09 02:36:15,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:15,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:36:15,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:36:15,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:36:15,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-09 02:36:15,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 222 transitions, 3167 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) [2024-11-09 02:36:15,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:15,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-09 02:36:15,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:15,891 INFO L124 PetriNetUnfolderBase]: 1028/2196 cut-off events. [2024-11-09 02:36:15,891 INFO L125 PetriNetUnfolderBase]: For 17226/17320 co-relation queries the response was YES. [2024-11-09 02:36:15,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12843 conditions, 2196 events. 1028/2196 cut-off events. For 17226/17320 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13230 event pairs, 270 based on Foata normal form. 9/2180 useless extension candidates. Maximal degree in co-relation 12793. Up to 1873 conditions per place. [2024-11-09 02:36:15,912 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 158 selfloop transitions, 8 changer transitions 22/197 dead transitions. [2024-11-09 02:36:15,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 197 transitions, 3029 flow [2024-11-09 02:36:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:36:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:36:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-11-09 02:36:15,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-11-09 02:36:15,913 INFO L175 Difference]: Start difference. First operand has 115 places, 222 transitions, 3167 flow. Second operand 5 states and 95 transitions. [2024-11-09 02:36:15,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 197 transitions, 3029 flow [2024-11-09 02:36:15,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 197 transitions, 2824 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-11-09 02:36:15,951 INFO L231 Difference]: Finished difference. Result has 116 places, 174 transitions, 2225 flow [2024-11-09 02:36:15,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2225, PETRI_PLACES=116, PETRI_TRANSITIONS=174} [2024-11-09 02:36:15,952 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-11-09 02:36:15,952 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 174 transitions, 2225 flow [2024-11-09 02:36:15,952 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) [2024-11-09 02:36:15,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:15,953 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] [2024-11-09 02:36:15,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:36:15,953 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:15,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:15,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1655239682, now seen corresponding path program 1 times [2024-11-09 02:36:15,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:15,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83800176] [2024-11-09 02:36:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:15,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:36:16,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:16,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83800176] [2024-11-09 02:36:16,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83800176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:36:16,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:36:16,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:36:16,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30808603] [2024-11-09 02:36:16,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:36:16,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:36:16,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:36:16,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:36:16,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 02:36:16,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 174 transitions, 2225 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:36:16,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:16,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 02:36:16,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:16,597 INFO L124 PetriNetUnfolderBase]: 1108/2269 cut-off events. [2024-11-09 02:36:16,597 INFO L125 PetriNetUnfolderBase]: For 14874/14936 co-relation queries the response was YES. [2024-11-09 02:36:16,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 2269 events. 1108/2269 cut-off events. For 14874/14936 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13363 event pairs, 104 based on Foata normal form. 51/2319 useless extension candidates. Maximal degree in co-relation 12212. Up to 963 conditions per place. [2024-11-09 02:36:16,615 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 244 selfloop transitions, 27 changer transitions 0/276 dead transitions. [2024-11-09 02:36:16,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 276 transitions, 3881 flow [2024-11-09 02:36:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:36:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:36:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-11-09 02:36:16,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-11-09 02:36:16,617 INFO L175 Difference]: Start difference. First operand has 116 places, 174 transitions, 2225 flow. Second operand 6 states and 103 transitions. [2024-11-09 02:36:16,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 276 transitions, 3881 flow [2024-11-09 02:36:16,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 276 transitions, 3734 flow, removed 31 selfloop flow, removed 17 redundant places. [2024-11-09 02:36:16,647 INFO L231 Difference]: Finished difference. Result has 99 places, 181 transitions, 2265 flow [2024-11-09 02:36:16,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2265, PETRI_PLACES=99, PETRI_TRANSITIONS=181} [2024-11-09 02:36:16,648 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2024-11-09 02:36:16,648 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 181 transitions, 2265 flow [2024-11-09 02:36:16,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:36:16,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:16,649 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] [2024-11-09 02:36:16,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:36:16,649 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:16,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash 799663309, now seen corresponding path program 1 times [2024-11-09 02:36:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:16,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281389147] [2024-11-09 02:36:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281389147] [2024-11-09 02:36:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281389147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:36:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821615011] [2024-11-09 02:36:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:16,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:36:16,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:36:16,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:36:16,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:36:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:17,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 02:36:17,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:36:17,182 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 [2024-11-09 02:36:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:17,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:36:17,630 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-09 02:36:17,631 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 [2024-11-09 02:36:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821615011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:36:17,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:36:17,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2024-11-09 02:36:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672932863] [2024-11-09 02:36:17,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:36:17,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 02:36:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 02:36:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-11-09 02:36:17,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 02:36:17,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 181 transitions, 2265 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) [2024-11-09 02:36:17,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:17,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 02:36:17,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:19,355 INFO L124 PetriNetUnfolderBase]: 1695/3502 cut-off events. [2024-11-09 02:36:19,356 INFO L125 PetriNetUnfolderBase]: For 24883/24987 co-relation queries the response was YES. [2024-11-09 02:36:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19871 conditions, 3502 events. 1695/3502 cut-off events. For 24883/24987 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22374 event pairs, 171 based on Foata normal form. 114/3615 useless extension candidates. Maximal degree in co-relation 19829. Up to 1053 conditions per place. [2024-11-09 02:36:19,380 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 236 selfloop transitions, 282 changer transitions 17/540 dead transitions. [2024-11-09 02:36:19,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 540 transitions, 6950 flow [2024-11-09 02:36:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 02:36:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 02:36:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 490 transitions. [2024-11-09 02:36:19,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38950715421303655 [2024-11-09 02:36:19,383 INFO L175 Difference]: Start difference. First operand has 99 places, 181 transitions, 2265 flow. Second operand 34 states and 490 transitions. [2024-11-09 02:36:19,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 540 transitions, 6950 flow [2024-11-09 02:36:19,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 540 transitions, 6837 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-09 02:36:19,424 INFO L231 Difference]: Finished difference. Result has 152 places, 339 transitions, 5227 flow [2024-11-09 02:36:19,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5227, PETRI_PLACES=152, PETRI_TRANSITIONS=339} [2024-11-09 02:36:19,425 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 119 predicate places. [2024-11-09 02:36:19,425 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 339 transitions, 5227 flow [2024-11-09 02:36:19,426 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) [2024-11-09 02:36:19,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:36:19,426 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:19,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:36:19,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:36:19,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:36:19,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:36:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2125400354, now seen corresponding path program 1 times [2024-11-09 02:36:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:36:19,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813905150] [2024-11-09 02:36:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:19,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:36:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:19,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:36:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813905150] [2024-11-09 02:36:19,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813905150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:36:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876500890] [2024-11-09 02:36:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:36:19,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:36:19,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:36:19,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:36:19,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:36:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:36:20,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 02:36:20,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:36:20,047 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 [2024-11-09 02:36:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:20,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:36:20,108 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 18 treesize of output 12 [2024-11-09 02:36:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:36:20,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876500890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:36:20,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:36:20,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2024-11-09 02:36:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052062148] [2024-11-09 02:36:20,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:36:20,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:36:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:36:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:36:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:36:20,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-09 02:36:20,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 339 transitions, 5227 flow. Second operand has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:36:20,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:36:20,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-09 02:36:20,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:36:20,648 INFO L124 PetriNetUnfolderBase]: 422/1095 cut-off events. [2024-11-09 02:36:20,649 INFO L125 PetriNetUnfolderBase]: For 18182/18254 co-relation queries the response was YES. [2024-11-09 02:36:20,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 1095 events. 422/1095 cut-off events. For 18182/18254 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6209 event pairs, 35 based on Foata normal form. 125/1212 useless extension candidates. Maximal degree in co-relation 8069. Up to 344 conditions per place. [2024-11-09 02:36:20,662 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 0 selfloop transitions, 0 changer transitions 279/279 dead transitions. [2024-11-09 02:36:20,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 279 transitions, 4950 flow [2024-11-09 02:36:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:36:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:36:20,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 250 transitions. [2024-11-09 02:36:20,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222972972972973 [2024-11-09 02:36:20,664 INFO L175 Difference]: Start difference. First operand has 152 places, 339 transitions, 5227 flow. Second operand 16 states and 250 transitions. [2024-11-09 02:36:20,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 279 transitions, 4950 flow [2024-11-09 02:36:20,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 279 transitions, 4201 flow, removed 149 selfloop flow, removed 19 redundant places. [2024-11-09 02:36:20,715 INFO L231 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2024-11-09 02:36:20,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2024-11-09 02:36:20,717 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 101 predicate places. [2024-11-09 02:36:20,717 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2024-11-09 02:36:20,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:36:20,721 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 02:36:20,721 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:36:20,721 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 02:36:20,722 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 02:36:20,722 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:36:20,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:36:20,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:36:20,923 INFO L407 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:36:20,928 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 02:36:20,928 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 02:36:20,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:36:20 BasicIcfg [2024-11-09 02:36:20,935 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 02:36:20,935 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 02:36:20,935 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 02:36:20,936 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 02:36:20,936 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:36:07" (3/4) ... [2024-11-09 02:36:20,937 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 02:36:20,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-11-09 02:36:20,945 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2024-11-09 02:36:20,945 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-09 02:36:20,946 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-09 02:36:20,946 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 02:36:21,023 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 02:36:21,023 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 02:36:21,024 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 02:36:21,024 INFO L158 Benchmark]: Toolchain (without parser) took 15317.56ms. Allocated memory was 167.8MB in the beginning and 740.3MB in the end (delta: 572.5MB). Free memory was 94.4MB in the beginning and 602.7MB in the end (delta: -508.3MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2024-11-09 02:36:21,024 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 02:36:21,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.42ms. Allocated memory was 167.8MB in the beginning and 247.5MB in the end (delta: 79.7MB). Free memory was 94.1MB in the beginning and 210.2MB in the end (delta: -116.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2024-11-09 02:36:21,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.98ms. Allocated memory is still 247.5MB. Free memory was 210.2MB in the beginning and 207.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 02:36:21,025 INFO L158 Benchmark]: Boogie Preprocessor took 107.06ms. Allocated memory is still 247.5MB. Free memory was 207.1MB in the beginning and 204.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 02:36:21,025 INFO L158 Benchmark]: RCFGBuilder took 685.11ms. Allocated memory is still 247.5MB. Free memory was 204.7MB in the beginning and 171.4MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-09 02:36:21,026 INFO L158 Benchmark]: TraceAbstraction took 13789.69ms. Allocated memory was 247.5MB in the beginning and 740.3MB in the end (delta: 492.8MB). Free memory was 170.4MB in the beginning and 607.2MB in the end (delta: -436.8MB). Peak memory consumption was 278.6MB. Max. memory is 16.1GB. [2024-11-09 02:36:21,026 INFO L158 Benchmark]: Witness Printer took 88.33ms. Allocated memory is still 740.3MB. Free memory was 607.2MB in the beginning and 602.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 02:36:21,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.42ms. Allocated memory was 167.8MB in the beginning and 247.5MB in the end (delta: 79.7MB). Free memory was 94.1MB in the beginning and 210.2MB in the end (delta: -116.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.98ms. Allocated memory is still 247.5MB. Free memory was 210.2MB in the beginning and 207.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.06ms. Allocated memory is still 247.5MB. Free memory was 207.1MB in the beginning and 204.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 685.11ms. Allocated memory is still 247.5MB. Free memory was 204.7MB in the beginning and 171.4MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13789.69ms. Allocated memory was 247.5MB in the beginning and 740.3MB in the end (delta: 492.8MB). Free memory was 170.4MB in the beginning and 607.2MB in the end (delta: -436.8MB). Peak memory consumption was 278.6MB. Max. memory is 16.1GB. * Witness Printer took 88.33ms. Allocated memory is still 740.3MB. Free memory was 607.2MB in the beginning and 602.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. 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: 13.7s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1174 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1123 mSDsluCounter, 272 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 212 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3694 IncrementalHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 60 mSDtfsCounter, 3694 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5227occurred in iteration=14, InterpolantAutomatonStates: 140, 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, 4.8s InterpolantComputationTime, 363 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 419 ConstructedInterpolants, 5 QuantifiedInterpolants, 3268 SizeOfPredicates, 53 NumberOfNonLiveVariables, 679 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 39/64 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! [2024-11-09 02:36:21,053 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