./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:24:38,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:24:38,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:24:38,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:24:38,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:24:38,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:24:38,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:24:38,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:24:38,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:24:38,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:24:38,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:24:38,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:24:38,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:24:38,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:24:38,766 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:24:38,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:24:38,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:24:38,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:24:38,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:24:38,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:24:38,772 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:24:38,773 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:24:38,773 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:24:38,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:24:38,774 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:24:38,774 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:24:38,775 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:24:38,775 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:24:38,775 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:24:38,775 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:24:38,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:24:38,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:24:38,776 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:24:38,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:38,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:24:38,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:24:38,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:24:38,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:24:38,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:24:38,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:24:38,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:24:38,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:24:38,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-11-10 18:24:39,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:24:39,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:24:39,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:24:39,109 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:24:39,110 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:24:39,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-10 18:24:40,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:24:41,083 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:24:41,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-10 18:24:41,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cf61cbc/413d5ca82ea2480f8675f6439130ee8a/FLAG5a4fe92b2 [2024-11-10 18:24:41,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cf61cbc/413d5ca82ea2480f8675f6439130ee8a [2024-11-10 18:24:41,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:24:41,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:24:41,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:41,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:24:41,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:24:41,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bccec09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41, skipping insertion in model container [2024-11-10 18:24:41,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:24:41,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:41,699 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:24:41,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:41,810 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:24:41,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41 WrapperNode [2024-11-10 18:24:41,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:41,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:41,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:24:41,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:24:41,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,893 INFO L138 Inliner]: procedures = 243, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 262 [2024-11-10 18:24:41,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:41,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:24:41,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:24:41,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:24:41,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,950 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-10 18:24:41,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,968 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:41,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:24:41,989 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:24:41,989 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:24:41,993 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:24:41,994 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (1/1) ... [2024-11-10 18:24:42,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:42,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:42,091 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) [2024-11-10 18:24:42,099 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 [2024-11-10 18:24:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 18:24:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 18:24:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 18:24:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:24:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:24:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:24:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:24:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:24:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:24:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:24:42,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:24:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:24:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:24:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:24:42,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:24:42,204 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:24:42,376 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:24:42,379 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:24:42,830 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:24:42,830 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:24:43,660 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:24:43,660 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:24:43,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:43 BoogieIcfgContainer [2024-11-10 18:24:43,661 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:24:43,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:24:43,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:24:43,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:24:43,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:24:41" (1/3) ... [2024-11-10 18:24:43,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0208fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:43, skipping insertion in model container [2024-11-10 18:24:43,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:41" (2/3) ... [2024-11-10 18:24:43,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0208fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:43, skipping insertion in model container [2024-11-10 18:24:43,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:43" (3/3) ... [2024-11-10 18:24:43,673 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-11-10 18:24:43,693 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:24:43,694 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:24:43,694 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:24:43,762 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:24:43,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 55 transitions, 124 flow [2024-11-10 18:24:43,854 INFO L124 PetriNetUnfolderBase]: 11/53 cut-off events. [2024-11-10 18:24:43,854 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:24:43,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 11/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2024-11-10 18:24:43,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 55 transitions, 124 flow [2024-11-10 18:24:43,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 52 transitions, 116 flow [2024-11-10 18:24:43,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:24:43,893 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=None, 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;@517098e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:24:43,893 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 18:24:43,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:24:43,920 INFO L124 PetriNetUnfolderBase]: 11/50 cut-off events. [2024-11-10 18:24:43,920 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:24:43,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:43,921 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:43,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:43,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash -642884102, now seen corresponding path program 1 times [2024-11-10 18:24:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:43,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462006580] [2024-11-10 18:24:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:43,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:44,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:44,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462006580] [2024-11-10 18:24:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462006580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:44,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:44,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881296022] [2024-11-10 18:24:44,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:44,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:24:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:24:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:24:44,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-11-10 18:24:44,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 116 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-10 18:24:44,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:44,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-11-10 18:24:44,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:44,984 INFO L124 PetriNetUnfolderBase]: 251/547 cut-off events. [2024-11-10 18:24:44,985 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 18:24:44,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 547 events. 251/547 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2761 event pairs, 159 based on Foata normal form. 88/547 useless extension candidates. Maximal degree in co-relation 900. Up to 393 conditions per place. [2024-11-10 18:24:44,997 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 25 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-11-10 18:24:44,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 152 flow [2024-11-10 18:24:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:24:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:24:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 75 transitions. [2024-11-10 18:24:45,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-10 18:24:45,013 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 116 flow. Second operand 2 states and 75 transitions. [2024-11-10 18:24:45,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 152 flow [2024-11-10 18:24:45,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:45,022 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 94 flow [2024-11-10 18:24:45,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2024-11-10 18:24:45,034 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-10 18:24:45,034 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 94 flow [2024-11-10 18:24:45,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-10 18:24:45,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:45,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:45,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:24:45,036 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:45,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash -333697957, now seen corresponding path program 1 times [2024-11-10 18:24:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:45,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013059894] [2024-11-10 18:24:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:45,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013059894] [2024-11-10 18:24:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013059894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:45,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:24:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592202793] [2024-11-10 18:24:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:45,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:45,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 18:24:45,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-10 18:24:45,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:45,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 18:24:45,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:45,798 INFO L124 PetriNetUnfolderBase]: 455/1000 cut-off events. [2024-11-10 18:24:45,798 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:24:45,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 1000 events. 455/1000 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5604 event pairs, 190 based on Foata normal form. 18/889 useless extension candidates. Maximal degree in co-relation 1720. Up to 442 conditions per place. [2024-11-10 18:24:45,813 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 41 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-11-10 18:24:45,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 62 transitions, 215 flow [2024-11-10 18:24:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-10 18:24:45,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-11-10 18:24:45,816 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 94 flow. Second operand 3 states and 107 transitions. [2024-11-10 18:24:45,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 62 transitions, 215 flow [2024-11-10 18:24:45,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:24:45,822 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 106 flow [2024-11-10 18:24:45,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-11-10 18:24:45,823 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-10 18:24:45,823 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 106 flow [2024-11-10 18:24:45,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-10 18:24:45,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:45,824 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, 1, 1, 1] [2024-11-10 18:24:45,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:24:45,825 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:45,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1875641236, now seen corresponding path program 1 times [2024-11-10 18:24:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:45,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916485958] [2024-11-10 18:24:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916485958] [2024-11-10 18:24:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916485958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727813751] [2024-11-10 18:24:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:46,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:46,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:46,362 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) [2024-11-10 18:24:46,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:24:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:46,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 18:24:46,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:46,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:24:46,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727813751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:46,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:24:46,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 18:24:46,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149638909] [2024-11-10 18:24:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:46,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:46,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:46,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:46,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 18:24:46,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:46,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:46,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 18:24:46,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:47,071 INFO L124 PetriNetUnfolderBase]: 439/955 cut-off events. [2024-11-10 18:24:47,072 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-10 18:24:47,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 955 events. 439/955 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5368 event pairs, 286 based on Foata normal form. 1/827 useless extension candidates. Maximal degree in co-relation 1730. Up to 677 conditions per place. [2024-11-10 18:24:47,079 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 24 selfloop transitions, 1 changer transitions 3/45 dead transitions. [2024-11-10 18:24:47,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 156 flow [2024-11-10 18:24:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-10 18:24:47,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-11-10 18:24:47,083 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 106 flow. Second operand 3 states and 89 transitions. [2024-11-10 18:24:47,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 156 flow [2024-11-10 18:24:47,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:47,086 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 98 flow [2024-11-10 18:24:47,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-10 18:24:47,087 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-10 18:24:47,088 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 98 flow [2024-11-10 18:24:47,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:47,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:47,089 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, 1, 1, 1, 1] [2024-11-10 18:24:47,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:47,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:47,290 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:47,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:47,290 INFO L85 PathProgramCache]: Analyzing trace with hash -558150719, now seen corresponding path program 1 times [2024-11-10 18:24:47,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:47,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945608165] [2024-11-10 18:24:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:47,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:47,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945608165] [2024-11-10 18:24:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945608165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:47,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:47,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:24:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262947495] [2024-11-10 18:24:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:47,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:47,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:47,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 18:24:47,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:47,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:47,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 18:24:47,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:47,907 INFO L124 PetriNetUnfolderBase]: 778/1665 cut-off events. [2024-11-10 18:24:47,907 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-10 18:24:47,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 1665 events. 778/1665 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9975 event pairs, 333 based on Foata normal form. 29/1520 useless extension candidates. Maximal degree in co-relation 2974. Up to 757 conditions per place. [2024-11-10 18:24:47,921 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 41 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-10 18:24:47,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 225 flow [2024-11-10 18:24:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-10 18:24:47,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-10 18:24:47,923 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 98 flow. Second operand 3 states and 105 transitions. [2024-11-10 18:24:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 225 flow [2024-11-10 18:24:47,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:47,926 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 109 flow [2024-11-10 18:24:47,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-10 18:24:47,927 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-10 18:24:47,927 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 109 flow [2024-11-10 18:24:47,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:47,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:47,928 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:47,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:24:47,928 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:47,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:47,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1727017145, now seen corresponding path program 1 times [2024-11-10 18:24:47,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:47,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301834348] [2024-11-10 18:24:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:47,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:48,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:48,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301834348] [2024-11-10 18:24:48,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301834348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:48,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677447934] [2024-11-10 18:24:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:48,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:48,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:48,302 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) [2024-11-10 18:24:48,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:24:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:48,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:24:48,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:48,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677447934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:48,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 18:24:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575282261] [2024-11-10 18:24:48,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:48,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:24:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:24:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:24:48,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-10 18:24:48,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 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) [2024-11-10 18:24:48,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:48,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-10 18:24:48,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:49,268 INFO L124 PetriNetUnfolderBase]: 1565/3110 cut-off events. [2024-11-10 18:24:49,268 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-11-10 18:24:49,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5913 conditions, 3110 events. 1565/3110 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18366 event pairs, 160 based on Foata normal form. 87/3009 useless extension candidates. Maximal degree in co-relation 5907. Up to 536 conditions per place. [2024-11-10 18:24:49,287 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 87 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-11-10 18:24:49,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 108 transitions, 457 flow [2024-11-10 18:24:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-11-10 18:24:49,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6393939393939394 [2024-11-10 18:24:49,292 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 109 flow. Second operand 6 states and 211 transitions. [2024-11-10 18:24:49,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 108 transitions, 457 flow [2024-11-10 18:24:49,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 108 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:49,297 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 147 flow [2024-11-10 18:24:49,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-11-10 18:24:49,299 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2024-11-10 18:24:49,299 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 147 flow [2024-11-10 18:24:49,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 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) [2024-11-10 18:24:49,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:49,300 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:49,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:49,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:49,502 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:49,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1616091953, now seen corresponding path program 2 times [2024-11-10 18:24:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:49,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197466969] [2024-11-10 18:24:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-10 18:24:49,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:49,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197466969] [2024-11-10 18:24:49,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197466969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:49,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:49,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:24:49,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396396716] [2024-11-10 18:24:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:49,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:49,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:49,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:49,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-11-10 18:24:49,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 147 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) [2024-11-10 18:24:49,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:49,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-11-10 18:24:49,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:50,238 INFO L124 PetriNetUnfolderBase]: 776/2019 cut-off events. [2024-11-10 18:24:50,238 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2024-11-10 18:24:50,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 2019 events. 776/2019 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 11617 event pairs, 343 based on Foata normal form. 128/2002 useless extension candidates. Maximal degree in co-relation 3990. Up to 650 conditions per place. [2024-11-10 18:24:50,255 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 34 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-11-10 18:24:50,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 295 flow [2024-11-10 18:24:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-10 18:24:50,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2024-11-10 18:24:50,257 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 147 flow. Second operand 3 states and 104 transitions. [2024-11-10 18:24:50,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 295 flow [2024-11-10 18:24:50,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 279 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:50,263 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 155 flow [2024-11-10 18:24:50,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-11-10 18:24:50,264 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2024-11-10 18:24:50,265 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 155 flow [2024-11-10 18:24:50,265 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) [2024-11-10 18:24:50,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:50,265 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:50,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:24:50,266 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:50,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1926154529, now seen corresponding path program 3 times [2024-11-10 18:24:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883683237] [2024-11-10 18:24:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 18:24:50,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883683237] [2024-11-10 18:24:50,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883683237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268187928] [2024-11-10 18:24:50,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:24:50,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:50,646 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) [2024-11-10 18:24:50,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:24:51,093 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:24:51,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:51,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:24:51,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 18:24:51,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 18:24:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268187928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:51,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 18:24:51,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579647990] [2024-11-10 18:24:51,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:51,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:24:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:24:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:24:51,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-10 18:24:51,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 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) [2024-11-10 18:24:51,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:51,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-10 18:24:51,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:51,809 INFO L124 PetriNetUnfolderBase]: 1960/4600 cut-off events. [2024-11-10 18:24:51,809 INFO L125 PetriNetUnfolderBase]: For 1804/1804 co-relation queries the response was YES. [2024-11-10 18:24:51,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 4600 events. 1960/4600 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 30415 event pairs, 276 based on Foata normal form. 168/4365 useless extension candidates. Maximal degree in co-relation 10069. Up to 719 conditions per place. [2024-11-10 18:24:51,845 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 101 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2024-11-10 18:24:51,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 123 transitions, 667 flow [2024-11-10 18:24:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-11-10 18:24:51,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-10 18:24:51,848 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 155 flow. Second operand 6 states and 215 transitions. [2024-11-10 18:24:51,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 123 transitions, 667 flow [2024-11-10 18:24:51,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 123 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:51,857 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 187 flow [2024-11-10 18:24:51,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-11-10 18:24:51,858 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2024-11-10 18:24:51,859 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 187 flow [2024-11-10 18:24:51,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 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) [2024-11-10 18:24:51,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:51,860 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:51,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:52,060 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 [2024-11-10 18:24:52,062 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:52,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1200113402, now seen corresponding path program 4 times [2024-11-10 18:24:52,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:52,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063722599] [2024-11-10 18:24:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:52,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-10 18:24:52,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:52,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063722599] [2024-11-10 18:24:52,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063722599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600592605] [2024-11-10 18:24:52,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:24:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:52,364 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) [2024-11-10 18:24:52,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:24:52,836 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:24:52,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:52,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:24:52,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-10 18:24:52,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:24:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600592605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:52,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:24:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-10 18:24:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207456971] [2024-11-10 18:24:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:52,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:24:52,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:24:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:52,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 18:24:52,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-10 18:24:52,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:52,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 18:24:52,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:53,411 INFO L124 PetriNetUnfolderBase]: 1810/4354 cut-off events. [2024-11-10 18:24:53,413 INFO L125 PetriNetUnfolderBase]: For 2892/2920 co-relation queries the response was YES. [2024-11-10 18:24:53,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10000 conditions, 4354 events. 1810/4354 cut-off events. For 2892/2920 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 27678 event pairs, 565 based on Foata normal form. 0/4111 useless extension candidates. Maximal degree in co-relation 9986. Up to 1765 conditions per place. [2024-11-10 18:24:53,446 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 53 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-11-10 18:24:53,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 73 transitions, 406 flow [2024-11-10 18:24:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:24:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:24:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-10 18:24:53,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-10 18:24:53,448 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 187 flow. Second operand 4 states and 120 transitions. [2024-11-10 18:24:53,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 73 transitions, 406 flow [2024-11-10 18:24:53,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 390 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:53,458 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 210 flow [2024-11-10 18:24:53,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2024-11-10 18:24:53,461 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2024-11-10 18:24:53,461 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 210 flow [2024-11-10 18:24:53,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-10 18:24:53,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:53,462 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:53,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:24:53,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:53,663 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:53,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 403455870, now seen corresponding path program 5 times [2024-11-10 18:24:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:53,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252178179] [2024-11-10 18:24:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:53,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 84 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-10 18:24:54,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252178179] [2024-11-10 18:24:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252178179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10498164] [2024-11-10 18:24:54,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 18:24:54,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:54,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:54,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:54,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:24:54,814 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-10 18:24:54,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:54,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 18:24:54,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 81 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-10 18:24:54,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 81 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-10 18:24:54,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10498164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:54,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-10 18:24:54,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947837793] [2024-11-10 18:24:54,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:54,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:54,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:54,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:54,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:54,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 18:24:54,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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) [2024-11-10 18:24:54,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:54,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 18:24:54,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:55,226 INFO L124 PetriNetUnfolderBase]: 599/1563 cut-off events. [2024-11-10 18:24:55,226 INFO L125 PetriNetUnfolderBase]: For 1308/1320 co-relation queries the response was YES. [2024-11-10 18:24:55,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3801 conditions, 1563 events. 599/1563 cut-off events. For 1308/1320 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7215 event pairs, 189 based on Foata normal form. 61/1598 useless extension candidates. Maximal degree in co-relation 3784. Up to 578 conditions per place. [2024-11-10 18:24:55,238 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 52 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-11-10 18:24:55,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 393 flow [2024-11-10 18:24:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:24:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:24:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-10 18:24:55,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-11-10 18:24:55,240 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 210 flow. Second operand 4 states and 117 transitions. [2024-11-10 18:24:55,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 393 flow [2024-11-10 18:24:55,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:55,245 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 198 flow [2024-11-10 18:24:55,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-11-10 18:24:55,246 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2024-11-10 18:24:55,246 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 198 flow [2024-11-10 18:24:55,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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) [2024-11-10 18:24:55,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:55,246 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:55,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:24:55,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:55,447 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:24:55,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash 283633844, now seen corresponding path program 6 times [2024-11-10 18:24:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:55,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932614764] [2024-11-10 18:24:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:55,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:56,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932614764] [2024-11-10 18:24:56,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932614764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898915292] [2024-11-10 18:24:56,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 18:24:56,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:56,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:56,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:24:57,053 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-10 18:24:57,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:57,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 18:24:57,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 116 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:57,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898915292] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:58,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:58,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 33 [2024-11-10 18:24:58,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330443277] [2024-11-10 18:24:58,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:58,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 18:24:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 18:24:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 18:24:58,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-10 18:24:58,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 198 flow. Second operand has 34 states, 34 states have (on average 22.852941176470587) internal successors, (777), 34 states have internal predecessors, (777), 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) [2024-11-10 18:24:58,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:58,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-10 18:24:58,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:59,622 INFO L124 PetriNetUnfolderBase]: 632/1646 cut-off events. [2024-11-10 18:24:59,622 INFO L125 PetriNetUnfolderBase]: For 1223/1234 co-relation queries the response was YES. [2024-11-10 18:24:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 1646 events. 632/1646 cut-off events. For 1223/1234 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7736 event pairs, 61 based on Foata normal form. 30/1649 useless extension candidates. Maximal degree in co-relation 3949. Up to 247 conditions per place. [2024-11-10 18:24:59,634 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 0 selfloop transitions, 0 changer transitions 138/138 dead transitions. [2024-11-10 18:24:59,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 138 transitions, 778 flow [2024-11-10 18:24:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:24:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:24:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 348 transitions. [2024-11-10 18:24:59,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-10 18:24:59,639 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 198 flow. Second operand 12 states and 348 transitions. [2024-11-10 18:24:59,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 138 transitions, 778 flow [2024-11-10 18:24:59,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 138 transitions, 746 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:59,644 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2024-11-10 18:24:59,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2024-11-10 18:24:59,646 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-11-10 18:24:59,646 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2024-11-10 18:24:59,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 22.852941176470587) internal successors, (777), 34 states have internal predecessors, (777), 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) [2024-11-10 18:24:59,650 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-10 18:24:59,651 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-10 18:24:59,651 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 18:24:59,651 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 18:24:59,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 18:24:59,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:59,852 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2024-11-10 18:24:59,856 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 18:24:59,856 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:24:59,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:24:59 BasicIcfg [2024-11-10 18:24:59,862 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:24:59,862 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:24:59,865 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:24:59,865 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:24:59,866 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:43" (3/4) ... [2024-11-10 18:24:59,868 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 18:24:59,873 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 18:24:59,873 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 18:24:59,887 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 147 nodes and edges [2024-11-10 18:24:59,889 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 71 nodes and edges [2024-11-10 18:24:59,890 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-10 18:24:59,890 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-10 18:24:59,891 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 18:24:59,892 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-10 18:24:59,892 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 18:25:00,006 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 18:25:00,006 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 18:25:00,007 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:25:00,007 INFO L158 Benchmark]: Toolchain (without parser) took 18874.96ms. Allocated memory was 159.4MB in the beginning and 866.1MB in the end (delta: 706.7MB). Free memory was 102.7MB in the beginning and 334.2MB in the end (delta: -231.5MB). Peak memory consumption was 476.1MB. Max. memory is 16.1GB. [2024-11-10 18:25:00,007 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 159.4MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:25:00,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.53ms. Allocated memory is still 159.4MB. Free memory was 102.7MB in the beginning and 71.3MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-10 18:25:00,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.86ms. Allocated memory is still 159.4MB. Free memory was 71.3MB in the beginning and 68.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:25:00,008 INFO L158 Benchmark]: Boogie Preprocessor took 93.87ms. Allocated memory is still 159.4MB. Free memory was 68.0MB in the beginning and 64.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 18:25:00,008 INFO L158 Benchmark]: IcfgBuilder took 1672.63ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 64.1MB in the beginning and 129.6MB in the end (delta: -65.4MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. [2024-11-10 18:25:00,009 INFO L158 Benchmark]: TraceAbstraction took 16198.20ms. Allocated memory was 226.5MB in the beginning and 866.1MB in the end (delta: 639.6MB). Free memory was 128.5MB in the beginning and 341.0MB in the end (delta: -212.5MB). Peak memory consumption was 427.7MB. Max. memory is 16.1GB. [2024-11-10 18:25:00,009 INFO L158 Benchmark]: Witness Printer took 144.14ms. Allocated memory is still 866.1MB. Free memory was 341.0MB in the beginning and 334.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 18:25:00,011 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 159.4MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.53ms. Allocated memory is still 159.4MB. Free memory was 102.7MB in the beginning and 71.3MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.86ms. Allocated memory is still 159.4MB. Free memory was 71.3MB in the beginning and 68.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.87ms. Allocated memory is still 159.4MB. Free memory was 68.0MB in the beginning and 64.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 1672.63ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 64.1MB in the beginning and 129.6MB in the end (delta: -65.4MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16198.20ms. Allocated memory was 226.5MB in the beginning and 866.1MB in the end (delta: 639.6MB). Free memory was 128.5MB in the beginning and 341.0MB in the end (delta: -212.5MB). Peak memory consumption was 427.7MB. Max. memory is 16.1GB. * Witness Printer took 144.14ms. Allocated memory is still 866.1MB. Free memory was 341.0MB in the beginning and 334.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 906]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 75 locations, 4 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: 16.1s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 589 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 574 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2731 IncrementalHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 4 mSDtfsCounter, 2731 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 728 GetRequests, 666 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred in iteration=8, InterpolantAutomatonStates: 46, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 928 NumberOfCodeBlocks, 893 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1191 ConstructedInterpolants, 0 QuantifiedInterpolants, 3836 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2845 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 848/1266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 18:25:00,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE