./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:24:41,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:24:41,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:24:41,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:24:41,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:24:41,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:24:41,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:24:41,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:24:41,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:24:41,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:24:41,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:24:41,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:24:41,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:24:41,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:24:41,961 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:24:41,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:24:41,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:24:41,962 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:24:41,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:24:41,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:24:41,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:24:41,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:24:41,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:24:41,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:24:41,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:24:41,968 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:24:41,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:24:41,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:24:41,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:24:41,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:24:41,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:24:41,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:24:41,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:24:41,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:24:41,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:24:41,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:24:41,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:24:41,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:24:41,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:24:41,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:24:41,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:24:41,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:24:41,973 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2024-10-11 14:24:42,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:24:42,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:24:42,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:24:42,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:24:42,251 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:24:42,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-10-11 14:24:43,708 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:24:43,962 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:24:43,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-10-11 14:24:43,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d59fff12f/043b317a482f45cd8fb4e72dbcf00093/FLAG0aabe9749 [2024-10-11 14:24:43,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d59fff12f/043b317a482f45cd8fb4e72dbcf00093 [2024-10-11 14:24:43,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:24:43,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:24:43,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:24:43,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:24:44,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:24:44,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:43" (1/1) ... [2024-10-11 14:24:44,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468dde26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44, skipping insertion in model container [2024-10-11 14:24:44,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:43" (1/1) ... [2024-10-11 14:24:44,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:24:44,246 WARN L248 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/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-10-11 14:24:44,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:24:44,452 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:24:44,464 WARN L248 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/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-10-11 14:24:44,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:24:44,554 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:24:44,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44 WrapperNode [2024-10-11 14:24:44,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:24:44,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:24:44,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:24:44,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:24:44,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,639 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-10-11 14:24:44,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:24:44,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:24:44,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:24:44,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:24:44,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,713 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-11 14:24:44,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:24:44,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:24:44,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:24:44,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:24:44,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (1/1) ... [2024-10-11 14:24:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:24:44,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:24:44,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:24:44,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:24:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-11 14:24:44,842 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-11 14:24:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 14:24:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:24:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-10-11 14:24:44,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-10-11 14:24:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 14:24:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 14:24:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:24:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:24:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 14:24:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 14:24:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:24:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:24:44,849 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:24:44,977 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:24:44,979 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:24:45,267 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:24:45,268 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:24:45,455 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:24:45,456 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:24:45,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:45 BoogieIcfgContainer [2024-10-11 14:24:45,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:24:45,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:24:45,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:24:45,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:24:45,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:43" (1/3) ... [2024-10-11 14:24:45,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50da650b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:45, skipping insertion in model container [2024-10-11 14:24:45,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:44" (2/3) ... [2024-10-11 14:24:45,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50da650b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:45, skipping insertion in model container [2024-10-11 14:24:45,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:45" (3/3) ... [2024-10-11 14:24:45,465 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-10-11 14:24:45,489 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:24:45,490 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-11 14:24:45,490 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:24:45,551 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:24:45,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2024-10-11 14:24:45,648 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2024-10-11 14:24:45,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:24:45,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-10-11 14:24:45,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2024-10-11 14:24:45,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2024-10-11 14:24:45,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:24:45,685 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;@58b8862f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:24:45,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-11 14:24:45,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:24:45,700 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-10-11 14:24:45,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:24:45,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:24:45,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:24:45,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:24:45,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:24:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1047439611, now seen corresponding path program 1 times [2024-10-11 14:24:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:24:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540053079] [2024-10-11 14:24:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:24:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:24:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:24:46,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540053079] [2024-10-11 14:24:46,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540053079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:24:46,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:24:46,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:24:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915139023] [2024-10-11 14:24:46,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:24:46,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:24:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:24:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:24:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:24:46,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-10-11 14:24:46,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-10-11 14:24:46,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:24:46,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-10-11 14:24:46,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:24:51,003 INFO L124 PetriNetUnfolderBase]: 30713/46966 cut-off events. [2024-10-11 14:24:51,003 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-11 14:24:51,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90095 conditions, 46966 events. 30713/46966 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 351067 event pairs, 7163 based on Foata normal form. 3860/49784 useless extension candidates. Maximal degree in co-relation 90084. Up to 11332 conditions per place. [2024-10-11 14:24:51,330 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 190 selfloop transitions, 11 changer transitions 0/220 dead transitions. [2024-10-11 14:24:51,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 220 transitions, 872 flow [2024-10-11 14:24:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:24:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:24:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 401 transitions. [2024-10-11 14:24:51,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371323529411765 [2024-10-11 14:24:51,351 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 139 flow. Second operand 8 states and 401 transitions. [2024-10-11 14:24:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 220 transitions, 872 flow [2024-10-11 14:24:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 220 transitions, 862 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:24:51,366 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 189 flow [2024-10-11 14:24:51,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-10-11 14:24:51,372 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-10-11 14:24:51,373 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 189 flow [2024-10-11 14:24:51,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-10-11 14:24:51,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:24:51,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:24:51,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:24:51,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:24:51,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:24:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1610142895, now seen corresponding path program 1 times [2024-10-11 14:24:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:24:51,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726949508] [2024-10-11 14:24:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:24:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:24:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:24:51,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726949508] [2024-10-11 14:24:51,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726949508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:24:51,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:24:51,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:24:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554106281] [2024-10-11 14:24:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:24:51,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:24:51,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:24:51,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:24:51,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:24:51,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-10-11 14:24:51,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:24:51,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:24:51,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-10-11 14:24:51,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:24:56,947 INFO L124 PetriNetUnfolderBase]: 46522/71671 cut-off events. [2024-10-11 14:24:56,948 INFO L125 PetriNetUnfolderBase]: For 13700/13700 co-relation queries the response was YES. [2024-10-11 14:24:57,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153092 conditions, 71671 events. 46522/71671 cut-off events. For 13700/13700 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 569589 event pairs, 9900 based on Foata normal form. 0/70263 useless extension candidates. Maximal degree in co-relation 153078. Up to 27642 conditions per place. [2024-10-11 14:24:57,489 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 193 selfloop transitions, 17 changer transitions 0/228 dead transitions. [2024-10-11 14:24:57,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 228 transitions, 1054 flow [2024-10-11 14:24:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:24:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:24:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2024-10-11 14:24:57,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360294117647058 [2024-10-11 14:24:57,494 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 189 flow. Second operand 8 states and 346 transitions. [2024-10-11 14:24:57,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 228 transitions, 1054 flow [2024-10-11 14:24:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 228 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:24:57,944 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 288 flow [2024-10-11 14:24:57,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-10-11 14:24:57,945 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-10-11 14:24:57,946 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 288 flow [2024-10-11 14:24:57,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:24:57,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:24:57,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:24:57,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:24:57,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:24:57,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:24:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash 719434576, now seen corresponding path program 1 times [2024-10-11 14:24:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:24:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071753299] [2024-10-11 14:24:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:24:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:24:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:24:58,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071753299] [2024-10-11 14:24:58,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071753299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:24:58,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:24:58,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:24:58,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488805696] [2024-10-11 14:24:58,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:24:58,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:24:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:24:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:24:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:24:58,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-10-11 14:24:58,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:24:58,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:24:58,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-10-11 14:24:58,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:05,183 INFO L124 PetriNetUnfolderBase]: 60127/97639 cut-off events. [2024-10-11 14:25:05,184 INFO L125 PetriNetUnfolderBase]: For 38504/38959 co-relation queries the response was YES. [2024-10-11 14:25:05,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226000 conditions, 97639 events. 60127/97639 cut-off events. For 38504/38959 co-relation queries the response was YES. Maximal size of possible extension queue 2970. Compared 870448 event pairs, 20848 based on Foata normal form. 0/96306 useless extension candidates. Maximal degree in co-relation 225980. Up to 41717 conditions per place. [2024-10-11 14:25:06,111 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 215 selfloop transitions, 17 changer transitions 3/257 dead transitions. [2024-10-11 14:25:06,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 257 transitions, 1362 flow [2024-10-11 14:25:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:25:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:25:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2024-10-11 14:25:06,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6672794117647058 [2024-10-11 14:25:06,114 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 288 flow. Second operand 8 states and 363 transitions. [2024-10-11 14:25:06,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 257 transitions, 1362 flow [2024-10-11 14:25:08,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 257 transitions, 1362 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:25:08,087 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 397 flow [2024-10-11 14:25:08,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-10-11 14:25:08,088 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-10-11 14:25:08,088 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 397 flow [2024-10-11 14:25:08,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:25:08,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:08,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:25:08,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:25:08,090 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:25:08,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash 400966673, now seen corresponding path program 1 times [2024-10-11 14:25:08,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805852895] [2024-10-11 14:25:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:25:08,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:08,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805852895] [2024-10-11 14:25:08,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805852895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:25:08,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:25:08,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:25:08,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512222444] [2024-10-11 14:25:08,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:25:08,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:25:08,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:25:08,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:25:08,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-10-11 14:25:08,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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) [2024-10-11 14:25:08,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:08,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-10-11 14:25:08,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:13,109 INFO L124 PetriNetUnfolderBase]: 38911/66921 cut-off events. [2024-10-11 14:25:13,109 INFO L125 PetriNetUnfolderBase]: For 41210/42412 co-relation queries the response was YES. [2024-10-11 14:25:13,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169790 conditions, 66921 events. 38911/66921 cut-off events. For 41210/42412 co-relation queries the response was YES. Maximal size of possible extension queue 2467. Compared 631582 event pairs, 13965 based on Foata normal form. 3031/69788 useless extension candidates. Maximal degree in co-relation 169764. Up to 34535 conditions per place. [2024-10-11 14:25:13,681 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 118 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2024-10-11 14:25:13,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 156 transitions, 942 flow [2024-10-11 14:25:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:25:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:25:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-10-11 14:25:13,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-10-11 14:25:13,683 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 397 flow. Second operand 3 states and 150 transitions. [2024-10-11 14:25:13,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 156 transitions, 942 flow [2024-10-11 14:25:15,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:25:15,863 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 468 flow [2024-10-11 14:25:15,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-10-11 14:25:15,865 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2024-10-11 14:25:15,865 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 468 flow [2024-10-11 14:25:15,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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) [2024-10-11 14:25:15,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:15,866 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:25:15,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:25:15,866 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:25:15,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:15,867 INFO L85 PathProgramCache]: Analyzing trace with hash 709116081, now seen corresponding path program 1 times [2024-10-11 14:25:15,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:15,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504301141] [2024-10-11 14:25:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:15,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:25:16,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:16,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504301141] [2024-10-11 14:25:16,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504301141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:25:16,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:25:16,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:25:16,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9213428] [2024-10-11 14:25:16,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:25:16,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:25:16,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:25:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:25:16,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-10-11 14:25:16,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-10-11 14:25:16,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:16,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-10-11 14:25:16,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:18,784 INFO L124 PetriNetUnfolderBase]: 20387/36627 cut-off events. [2024-10-11 14:25:18,784 INFO L125 PetriNetUnfolderBase]: For 30812/31812 co-relation queries the response was YES. [2024-10-11 14:25:18,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103013 conditions, 36627 events. 20387/36627 cut-off events. For 30812/31812 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 327574 event pairs, 5653 based on Foata normal form. 1395/37913 useless extension candidates. Maximal degree in co-relation 102985. Up to 18926 conditions per place. [2024-10-11 14:25:19,058 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 104 selfloop transitions, 10 changer transitions 0/139 dead transitions. [2024-10-11 14:25:19,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 139 transitions, 853 flow [2024-10-11 14:25:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:25:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:25:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-10-11 14:25:19,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-10-11 14:25:19,060 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 468 flow. Second operand 4 states and 160 transitions. [2024-10-11 14:25:19,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 139 transitions, 853 flow [2024-10-11 14:25:19,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 139 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:25:19,637 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 475 flow [2024-10-11 14:25:19,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-10-11 14:25:19,638 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2024-10-11 14:25:19,638 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 475 flow [2024-10-11 14:25:19,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-10-11 14:25:19,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:19,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:25:19,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:25:19,639 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:25:19,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash 236048221, now seen corresponding path program 1 times [2024-10-11 14:25:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:19,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951856897] [2024-10-11 14:25:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:25:19,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:19,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951856897] [2024-10-11 14:25:19,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951856897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:25:19,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:25:19,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:25:19,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33951617] [2024-10-11 14:25:19,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:25:19,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:25:19,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:19,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:25:19,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:25:19,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-10-11 14:25:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-10-11 14:25:19,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:19,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-10-11 14:25:19,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:23,184 INFO L124 PetriNetUnfolderBase]: 24250/40158 cut-off events. [2024-10-11 14:25:23,184 INFO L125 PetriNetUnfolderBase]: For 35796/36716 co-relation queries the response was YES. [2024-10-11 14:25:23,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116793 conditions, 40158 events. 24250/40158 cut-off events. For 35796/36716 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 331715 event pairs, 4853 based on Foata normal form. 545/40624 useless extension candidates. Maximal degree in co-relation 116764. Up to 11342 conditions per place. [2024-10-11 14:25:23,454 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 202 selfloop transitions, 27 changer transitions 27/277 dead transitions. [2024-10-11 14:25:23,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 277 transitions, 1812 flow [2024-10-11 14:25:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:25:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:25:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 350 transitions. [2024-10-11 14:25:23,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6433823529411765 [2024-10-11 14:25:23,456 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 475 flow. Second operand 8 states and 350 transitions. [2024-10-11 14:25:23,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 277 transitions, 1812 flow [2024-10-11 14:25:23,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 277 transitions, 1758 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:25:23,907 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 568 flow [2024-10-11 14:25:23,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-10-11 14:25:23,908 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-10-11 14:25:23,908 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 568 flow [2024-10-11 14:25:23,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-10-11 14:25:23,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:23,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:25:23,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:25:23,909 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:25:23,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1083601452, now seen corresponding path program 1 times [2024-10-11 14:25:23,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:23,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212680511] [2024-10-11 14:25:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:25:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:24,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212680511] [2024-10-11 14:25:24,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212680511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:25:24,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:25:24,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:25:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059221824] [2024-10-11 14:25:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:25:24,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:25:24,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:25:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:25:24,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-10-11 14:25:24,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-10-11 14:25:24,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:24,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-10-11 14:25:24,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:27,283 INFO L124 PetriNetUnfolderBase]: 22611/36771 cut-off events. [2024-10-11 14:25:27,284 INFO L125 PetriNetUnfolderBase]: For 36052/36123 co-relation queries the response was YES. [2024-10-11 14:25:27,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108624 conditions, 36771 events. 22611/36771 cut-off events. For 36052/36123 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 290088 event pairs, 4720 based on Foata normal form. 650/37390 useless extension candidates. Maximal degree in co-relation 108596. Up to 7735 conditions per place. [2024-10-11 14:25:27,495 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 204 selfloop transitions, 41 changer transitions 33/295 dead transitions. [2024-10-11 14:25:27,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 295 transitions, 1911 flow [2024-10-11 14:25:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:25:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:25:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 447 transitions. [2024-10-11 14:25:27,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5477941176470589 [2024-10-11 14:25:27,497 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 568 flow. Second operand 12 states and 447 transitions. [2024-10-11 14:25:27,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 295 transitions, 1911 flow [2024-10-11 14:25:27,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 295 transitions, 1908 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:25:27,729 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 742 flow [2024-10-11 14:25:27,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-10-11 14:25:27,730 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 49 predicate places. [2024-10-11 14:25:27,730 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 742 flow [2024-10-11 14:25:27,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-10-11 14:25:27,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:27,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:25:27,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:25:27,731 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:25:27,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash 288745811, now seen corresponding path program 1 times [2024-10-11 14:25:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:27,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142701667] [2024-10-11 14:25:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:27,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:25:27,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:27,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142701667] [2024-10-11 14:25:27,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142701667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:25:27,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:25:27,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:25:27,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233554741] [2024-10-11 14:25:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:25:27,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:25:27,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:25:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:25:27,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-10-11 14:25:27,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-10-11 14:25:27,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:27,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-10-11 14:25:27,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:31,130 INFO L124 PetriNetUnfolderBase]: 21659/35739 cut-off events. [2024-10-11 14:25:31,131 INFO L125 PetriNetUnfolderBase]: For 54189/54682 co-relation queries the response was YES. [2024-10-11 14:25:31,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113969 conditions, 35739 events. 21659/35739 cut-off events. For 54189/54682 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 283306 event pairs, 5623 based on Foata normal form. 422/36121 useless extension candidates. Maximal degree in co-relation 113937. Up to 7264 conditions per place. [2024-10-11 14:25:31,343 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 107 selfloop transitions, 20 changer transitions 150/293 dead transitions. [2024-10-11 14:25:31,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 293 transitions, 2117 flow [2024-10-11 14:25:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:25:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:25:31,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 438 transitions. [2024-10-11 14:25:31,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855614973262032 [2024-10-11 14:25:31,346 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 742 flow. Second operand 11 states and 438 transitions. [2024-10-11 14:25:31,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 293 transitions, 2117 flow [2024-10-11 14:25:31,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 293 transitions, 2052 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 14:25:31,783 INFO L231 Difference]: Finished difference. Result has 121 places, 82 transitions, 457 flow [2024-10-11 14:25:31,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=457, PETRI_PLACES=121, PETRI_TRANSITIONS=82} [2024-10-11 14:25:31,784 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 51 predicate places. [2024-10-11 14:25:31,784 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 82 transitions, 457 flow [2024-10-11 14:25:31,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-10-11 14:25:31,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:31,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:25:31,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:25:31,786 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-11 14:25:31,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash -700491726, now seen corresponding path program 1 times [2024-10-11 14:25:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233852047] [2024-10-11 14:25:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:25:31,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:31,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233852047] [2024-10-11 14:25:31,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233852047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:25:31,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:25:31,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:25:31,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359320362] [2024-10-11 14:25:31,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:25:31,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:25:31,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:25:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:25:31,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-10-11 14:25:31,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 82 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:25:31,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:31,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-10-11 14:25:31,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:32,155 INFO L124 PetriNetUnfolderBase]: 1444/2506 cut-off events. [2024-10-11 14:25:32,156 INFO L125 PetriNetUnfolderBase]: For 2626/2692 co-relation queries the response was YES. [2024-10-11 14:25:32,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7258 conditions, 2506 events. 1444/2506 cut-off events. For 2626/2692 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13539 event pairs, 509 based on Foata normal form. 114/2612 useless extension candidates. Maximal degree in co-relation 7243. Up to 1376 conditions per place. [2024-10-11 14:25:32,166 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2024-10-11 14:25:32,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 553 flow [2024-10-11 14:25:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:25:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:25:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-10-11 14:25:32,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-10-11 14:25:32,167 INFO L175 Difference]: Start difference. First operand has 121 places, 82 transitions, 457 flow. Second operand 4 states and 148 transitions. [2024-10-11 14:25:32,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 553 flow [2024-10-11 14:25:32,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 476 flow, removed 2 selfloop flow, removed 19 redundant places. [2024-10-11 14:25:32,174 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2024-10-11 14:25:32,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2024-10-11 14:25:32,174 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2024-10-11 14:25:32,175 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2024-10-11 14:25:32,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:25:32,177 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2024-10-11 14:25:32,178 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-10-11 14:25:32,178 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-10-11 14:25:32,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-10-11 14:25:32,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-10-11 14:25:32,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2024-10-11 14:25:32,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2024-10-11 14:25:32,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-10-11 14:25:32,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-10-11 14:25:32,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:25:32,180 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:25:32,185 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:25:32,185 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:25:32,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:32 BasicIcfg [2024-10-11 14:25:32,190 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:25:32,190 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:25:32,190 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:25:32,190 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:25:32,191 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:45" (3/4) ... [2024-10-11 14:25:32,192 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:25:32,195 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2024-10-11 14:25:32,196 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2024-10-11 14:25:32,196 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-11 14:25:32,200 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2024-10-11 14:25:32,201 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-11 14:25:32,201 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 14:25:32,202 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 14:25:32,296 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:25:32,297 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:25:32,297 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:25:32,298 INFO L158 Benchmark]: Toolchain (without parser) took 48303.92ms. Allocated memory was 151.0MB in the beginning and 14.7GB in the end (delta: 14.6GB). Free memory was 78.7MB in the beginning and 11.7GB in the end (delta: -11.6GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-10-11 14:25:32,298 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory was 103.1MB in the beginning and 103.0MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:25:32,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.30ms. Allocated memory is still 151.0MB. Free memory was 78.5MB in the beginning and 56.2MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-11 14:25:32,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.85ms. Allocated memory is still 151.0MB. Free memory was 56.2MB in the beginning and 119.6MB in the end (delta: -63.4MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-10-11 14:25:32,299 INFO L158 Benchmark]: Boogie Preprocessor took 103.75ms. Allocated memory was 151.0MB in the beginning and 222.3MB in the end (delta: 71.3MB). Free memory was 119.6MB in the beginning and 191.2MB in the end (delta: -71.6MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-10-11 14:25:32,300 INFO L158 Benchmark]: RCFGBuilder took 711.83ms. Allocated memory is still 222.3MB. Free memory was 191.2MB in the beginning and 150.3MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-10-11 14:25:32,301 INFO L158 Benchmark]: TraceAbstraction took 46731.28ms. Allocated memory was 222.3MB in the beginning and 14.7GB in the end (delta: 14.5GB). Free memory was 150.3MB in the beginning and 11.7GB in the end (delta: -11.6GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-10-11 14:25:32,301 INFO L158 Benchmark]: Witness Printer took 107.08ms. Allocated memory is still 14.7GB. Free memory was 11.7GB in the beginning and 11.7GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:25:32,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory was 103.1MB in the beginning and 103.0MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.30ms. Allocated memory is still 151.0MB. Free memory was 78.5MB in the beginning and 56.2MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.85ms. Allocated memory is still 151.0MB. Free memory was 56.2MB in the beginning and 119.6MB in the end (delta: -63.4MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.75ms. Allocated memory was 151.0MB in the beginning and 222.3MB in the end (delta: 71.3MB). Free memory was 119.6MB in the beginning and 191.2MB in the end (delta: -71.6MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * RCFGBuilder took 711.83ms. Allocated memory is still 222.3MB. Free memory was 191.2MB in the beginning and 150.3MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 46731.28ms. Allocated memory was 222.3MB in the beginning and 14.7GB in the end (delta: 14.5GB). Free memory was 150.3MB in the beginning and 11.7GB in the end (delta: -11.6GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Witness Printer took 107.08ms. Allocated memory is still 14.7GB. Free memory was 11.7GB in the beginning and 11.7GB in the end (delta: 4.2MB). 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 - 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 7 procedures, 107 locations, 9 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: 46.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 44.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1030 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1009 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2743 IncrementalHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 4 mSDtfsCounter, 2743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=7, InterpolantAutomatonStates: 66, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 14:25:32,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE