./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_ok_longest.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:04:35,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:04:35,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:04:35,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:04:35,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:04:35,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:04:35,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:04:35,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:04:35,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:04:35,987 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:04:35,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:04:35,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:04:35,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:04:35,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:04:35,989 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:04:35,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:04:35,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:04:35,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:04:35,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:04:35,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:04:35,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:04:35,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:04:35,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:04:35,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:04:35,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:04:35,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:04:35,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:04:35,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:04:35,992 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:04:35,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:04:35,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:04:35,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:04:35,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:35,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:04:35,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:04:35,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:04:35,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:04:35,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:04:35,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:04:35,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:04:35,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:04:35,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:04:35,995 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2024-11-16 19:04:36,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:04:36,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:04:36,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:04:36,220 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:04:36,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:04:36,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-16 19:04:37,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:04:37,798 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:04:37,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-16 19:04:37,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a13a984/e03ebafdd9b84ded87704c05c122f2ad/FLAGe658cdf4e [2024-11-16 19:04:38,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a13a984/e03ebafdd9b84ded87704c05c122f2ad [2024-11-16 19:04:38,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:04:38,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:04:38,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:38,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:04:38,181 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:04:38,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73de8148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38, skipping insertion in model container [2024-11-16 19:04:38,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:04:38,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2024-11-16 19:04:38,666 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2024-11-16 19:04:38,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:38,736 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:04:38,791 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2024-11-16 19:04:38,796 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2024-11-16 19:04:38,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:38,914 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:04:38,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38 WrapperNode [2024-11-16 19:04:38,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:38,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:38,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:04:38,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:04:38,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,042 INFO L138 Inliner]: procedures = 274, calls = 1652, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 1795 [2024-11-16 19:04:39,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:39,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:04:39,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:04:39,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:04:39,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,118 INFO L175 MemorySlicer]: Split 1635 memory accesses to 4 slices as follows [2, 5, 802, 826]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-16 19:04:39,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,150 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:04:39,187 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:04:39,187 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:04:39,187 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:04:39,188 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:39,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:39,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:39,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:04:39,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:04:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-16 19:04:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-16 19:04:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-16 19:04:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:04:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:04:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:04:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:04:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:04:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 19:04:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:04:39,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:04:39,275 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:04:39,441 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:04:39,443 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:04:40,923 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:04:40,923 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:05:08,238 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:05:08,238 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:05:08,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:05:08 BoogieIcfgContainer [2024-11-16 19:05:08,239 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:05:08,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:05:08,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:05:08,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:05:08,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:04:38" (1/3) ... [2024-11-16 19:05:08,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdcc924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:05:08, skipping insertion in model container [2024-11-16 19:05:08,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (2/3) ... [2024-11-16 19:05:08,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdcc924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:05:08, skipping insertion in model container [2024-11-16 19:05:08,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:05:08" (3/3) ... [2024-11-16 19:05:08,244 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2024-11-16 19:05:08,257 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:05:08,257 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:05:08,257 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:05:08,337 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:05:08,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 46 transitions, 106 flow [2024-11-16 19:05:08,425 INFO L124 PetriNetUnfolderBase]: 9/44 cut-off events. [2024-11-16 19:05:08,426 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:05:08,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 9/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 3 conditions per place. [2024-11-16 19:05:08,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 46 transitions, 106 flow [2024-11-16 19:05:08,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 42 transitions, 93 flow [2024-11-16 19:05:08,443 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:05:08,450 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;@2f76811f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:05:08,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:05:08,484 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:05:08,485 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-11-16 19:05:08,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:05:08,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:08,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-16 19:05:08,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:08,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash 3650802, now seen corresponding path program 1 times [2024-11-16 19:05:08,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104002380] [2024-11-16 19:05:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:09,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:09,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104002380] [2024-11-16 19:05:09,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104002380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:09,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:09,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:05:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773396670] [2024-11-16 19:05:09,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:09,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:05:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:05:09,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:05:09,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:05:09,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 93 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:09,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:09,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:05:09,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:09,330 INFO L124 PetriNetUnfolderBase]: 285/527 cut-off events. [2024-11-16 19:05:09,331 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-16 19:05:09,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 527 events. 285/527 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2350 event pairs, 196 based on Foata normal form. 52/530 useless extension candidates. Maximal degree in co-relation 934. Up to 453 conditions per place. [2024-11-16 19:05:09,339 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 25 selfloop transitions, 0 changer transitions 2/36 dead transitions. [2024-11-16 19:05:09,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 135 flow [2024-11-16 19:05:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:05:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:05:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2024-11-16 19:05:09,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-11-16 19:05:09,354 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 93 flow. Second operand 2 states and 55 transitions. [2024-11-16 19:05:09,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 135 flow [2024-11-16 19:05:09,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:05:09,358 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 72 flow [2024-11-16 19:05:09,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-16 19:05:09,364 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-16 19:05:09,364 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 72 flow [2024-11-16 19:05:09,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:09,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:09,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:09,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:05:09,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:09,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1620660321, now seen corresponding path program 1 times [2024-11-16 19:05:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:09,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442655676] [2024-11-16 19:05:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442655676] [2024-11-16 19:05:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442655676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:10,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:10,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:05:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546859914] [2024-11-16 19:05:10,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:10,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:05:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:05:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:05:10,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:05:10,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:10,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:10,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:05:10,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:10,431 INFO L124 PetriNetUnfolderBase]: 147/319 cut-off events. [2024-11-16 19:05:10,431 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:05:10,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 319 events. 147/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1159 event pairs, 76 based on Foata normal form. 13/304 useless extension candidates. Maximal degree in co-relation 606. Up to 146 conditions per place. [2024-11-16 19:05:10,433 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 27 selfloop transitions, 2 changer transitions 4/42 dead transitions. [2024-11-16 19:05:10,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 157 flow [2024-11-16 19:05:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:05:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:05:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-16 19:05:10,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-16 19:05:10,435 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 72 flow. Second operand 3 states and 70 transitions. [2024-11-16 19:05:10,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 157 flow [2024-11-16 19:05:10,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:05:10,437 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 78 flow [2024-11-16 19:05:10,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-11-16 19:05:10,438 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-11-16 19:05:10,438 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 78 flow [2024-11-16 19:05:10,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:10,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:10,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:10,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:05:10,439 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:10,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2140676295, now seen corresponding path program 1 times [2024-11-16 19:05:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:10,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791544869] [2024-11-16 19:05:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791544869] [2024-11-16 19:05:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791544869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:10,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:05:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363178561] [2024-11-16 19:05:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:10,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:05:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:05:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:05:10,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:05:10,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:10,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:10,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:05:10,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:10,924 INFO L124 PetriNetUnfolderBase]: 158/352 cut-off events. [2024-11-16 19:05:10,925 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-16 19:05:10,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 352 events. 158/352 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1295 event pairs, 127 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 689. Up to 274 conditions per place. [2024-11-16 19:05:10,927 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 29 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-16 19:05:10,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 154 flow [2024-11-16 19:05:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:05:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:05:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-16 19:05:10,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-11-16 19:05:10,928 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 78 flow. Second operand 3 states and 65 transitions. [2024-11-16 19:05:10,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 154 flow [2024-11-16 19:05:10,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:05:10,929 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 86 flow [2024-11-16 19:05:10,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-16 19:05:10,930 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-16 19:05:10,930 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 86 flow [2024-11-16 19:05:10,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:10,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:10,930 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:10,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:05:10,930 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:10,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2046187913, now seen corresponding path program 1 times [2024-11-16 19:05:10,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:10,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781059175] [2024-11-16 19:05:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:11,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781059175] [2024-11-16 19:05:11,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781059175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073035239] [2024-11-16 19:05:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:11,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:11,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:05:11,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:05:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:11,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:05:11,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:05:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:11,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:05:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073035239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:05:11,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:05:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 19:05:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267157438] [2024-11-16 19:05:11,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:05:11,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:05:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:05:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:05:11,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:05:11,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:11,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:11,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:05:11,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:12,445 INFO L124 PetriNetUnfolderBase]: 185/427 cut-off events. [2024-11-16 19:05:12,445 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-16 19:05:12,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 427 events. 185/427 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1565 event pairs, 127 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 876. Up to 274 conditions per place. [2024-11-16 19:05:12,448 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-16 19:05:12,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 244 flow [2024-11-16 19:05:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:05:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:05:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-16 19:05:12,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.427536231884058 [2024-11-16 19:05:12,449 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 86 flow. Second operand 6 states and 118 transitions. [2024-11-16 19:05:12,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 244 flow [2024-11-16 19:05:12,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:05:12,451 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 120 flow [2024-11-16 19:05:12,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-16 19:05:12,452 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-16 19:05:12,452 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 120 flow [2024-11-16 19:05:12,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:12,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:12,452 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:12,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:05:12,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:12,653 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:12,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1415738057, now seen corresponding path program 2 times [2024-11-16 19:05:12,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:12,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551902510] [2024-11-16 19:05:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:12,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 19:05:13,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551902510] [2024-11-16 19:05:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551902510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:13,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:13,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:05:13,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697263547] [2024-11-16 19:05:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:13,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:05:13,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:05:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:05:13,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:05:13,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:13,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:13,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:05:13,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:13,526 INFO L124 PetriNetUnfolderBase]: 130/345 cut-off events. [2024-11-16 19:05:13,527 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-11-16 19:05:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 345 events. 130/345 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1251 event pairs, 33 based on Foata normal form. 16/351 useless extension candidates. Maximal degree in co-relation 751. Up to 178 conditions per place. [2024-11-16 19:05:13,529 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 31 selfloop transitions, 3 changer transitions 1/44 dead transitions. [2024-11-16 19:05:13,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 207 flow [2024-11-16 19:05:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:05:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:05:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-16 19:05:13,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-16 19:05:13,531 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 120 flow. Second operand 3 states and 69 transitions. [2024-11-16 19:05:13,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 207 flow [2024-11-16 19:05:13,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 199 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:05:13,533 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 118 flow [2024-11-16 19:05:13,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-16 19:05:13,534 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-16 19:05:13,534 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 118 flow [2024-11-16 19:05:13,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:13,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:13,538 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:13,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:05:13,538 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:13,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1079046929, now seen corresponding path program 1 times [2024-11-16 19:05:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365712567] [2024-11-16 19:05:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:13,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:13,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365712567] [2024-11-16 19:05:13,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365712567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:13,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322312606] [2024-11-16 19:05:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:13,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:13,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:13,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:05:13,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:05:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:14,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 3481 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:05:14,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:05:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:14,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:05:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:14,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322312606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:05:14,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:05:14,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:05:14,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487324462] [2024-11-16 19:05:14,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:05:14,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:05:14,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:14,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:05:14,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:05:14,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:05:14,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 118 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:14,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:14,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:05:14,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:15,096 INFO L124 PetriNetUnfolderBase]: 172/432 cut-off events. [2024-11-16 19:05:15,097 INFO L125 PetriNetUnfolderBase]: For 651/651 co-relation queries the response was YES. [2024-11-16 19:05:15,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 432 events. 172/432 cut-off events. For 651/651 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1434 event pairs, 96 based on Foata normal form. 36/447 useless extension candidates. Maximal degree in co-relation 1016. Up to 219 conditions per place. [2024-11-16 19:05:15,099 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 64 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-11-16 19:05:15,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 404 flow [2024-11-16 19:05:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:05:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:05:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-11-16 19:05:15,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3858695652173913 [2024-11-16 19:05:15,101 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 118 flow. Second operand 12 states and 213 transitions. [2024-11-16 19:05:15,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 404 flow [2024-11-16 19:05:15,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:05:15,104 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 199 flow [2024-11-16 19:05:15,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2024-11-16 19:05:15,104 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-16 19:05:15,104 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 199 flow [2024-11-16 19:05:15,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:15,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:15,105 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:15,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:05:15,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 19:05:15,308 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:15,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1036846837, now seen corresponding path program 2 times [2024-11-16 19:05:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853377943] [2024-11-16 19:05:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:16,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853377943] [2024-11-16 19:05:16,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853377943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893889622] [2024-11-16 19:05:16,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:05:16,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:16,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:16,051 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:05:16,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:05:16,907 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:05:16,907 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:05:16,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 3631 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 19:05:16,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:05:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:16,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:05:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:17,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893889622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:05:17,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:05:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 19:05:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822808669] [2024-11-16 19:05:17,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:05:17,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:05:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:05:17,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:05:17,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:05:17,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 199 flow. Second operand has 25 states, 25 states have (on average 12.68) internal successors, (317), 25 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:17,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:17,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:05:17,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:17,548 INFO L124 PetriNetUnfolderBase]: 244/648 cut-off events. [2024-11-16 19:05:17,548 INFO L125 PetriNetUnfolderBase]: For 5295/5295 co-relation queries the response was YES. [2024-11-16 19:05:17,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 648 events. 244/648 cut-off events. For 5295/5295 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2152 event pairs, 96 based on Foata normal form. 72/699 useless extension candidates. Maximal degree in co-relation 1740. Up to 219 conditions per place. [2024-11-16 19:05:17,552 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 112 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-11-16 19:05:17,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 143 transitions, 785 flow [2024-11-16 19:05:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 19:05:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-16 19:05:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 411 transitions. [2024-11-16 19:05:17,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37228260869565216 [2024-11-16 19:05:17,554 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 199 flow. Second operand 24 states and 411 transitions. [2024-11-16 19:05:17,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 143 transitions, 785 flow [2024-11-16 19:05:17,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 143 transitions, 725 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-16 19:05:17,560 INFO L231 Difference]: Finished difference. Result has 92 places, 55 transitions, 331 flow [2024-11-16 19:05:17,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=331, PETRI_PLACES=92, PETRI_TRANSITIONS=55} [2024-11-16 19:05:17,561 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-11-16 19:05:17,561 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 55 transitions, 331 flow [2024-11-16 19:05:17,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.68) internal successors, (317), 25 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:17,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:17,561 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:17,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 19:05:17,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:17,762 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:17,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash -528778149, now seen corresponding path program 3 times [2024-11-16 19:05:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:17,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863075600] [2024-11-16 19:05:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:19,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:19,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863075600] [2024-11-16 19:05:19,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863075600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:19,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882673018] [2024-11-16 19:05:19,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:05:19,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:19,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:19,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:05:19,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process