./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:25:50,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:25:51,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:25:51,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:25:51,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:25:51,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:25:51,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:25:51,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:25:51,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:25:51,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:25:51,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:25:51,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:25:51,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:25:51,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:25:51,042 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:25:51,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:25:51,043 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:25:51,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:25:51,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:25:51,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:25:51,044 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:25:51,045 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:25:51,045 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:25:51,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:25:51,046 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:25:51,048 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:25:51,049 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:25:51,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:25:51,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:25:51,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:25:51,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:25:51,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:25:51,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:25:51,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:25:51,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:25:51,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:25:51,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:25:51,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:25:51,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:25:51,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:25:51,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:25:51,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:25:51,057 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2024-10-11 19:25:51,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:25:51,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:25:51,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:25:51,277 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:25:51,277 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:25:51,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i [2024-10-11 19:25:52,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:25:52,761 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:25:52,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i [2024-10-11 19:25:52,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c3a3d5208/cebeba99f05048b696a3ab0cd1a6c972/FLAGcda829740 [2024-10-11 19:25:53,095 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c3a3d5208/cebeba99f05048b696a3ab0cd1a6c972 [2024-10-11 19:25:53,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:25:53,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:25:53,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:25:53,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:25:53,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:25:53,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4796a69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53, skipping insertion in model container [2024-10-11 19:25:53,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,152 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:25:53,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:25:53,576 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:25:53,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:25:53,676 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:25:53,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53 WrapperNode [2024-10-11 19:25:53,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:25:53,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:25:53,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:25:53,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:25:53,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,739 INFO L138 Inliner]: procedures = 277, calls = 31, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 150 [2024-10-11 19:25:53,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:25:53,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:25:53,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:25:53,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:25:53,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,755 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,791 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 3, 5]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 2 writes are split as follows [0, 2, 0]. [2024-10-11 19:25:53,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:25:53,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:25:53,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:25:53,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:25:53,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (1/1) ... [2024-10-11 19:25:53,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:25:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:25:53,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:25:53,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:25:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 19:25:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 19:25:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 19:25:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 19:25:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:25:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 19:25:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 19:25:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 19:25:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 19:25:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 19:25:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 19:25:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:25:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:25:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:25:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:25:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 19:25:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:25:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:25:53,901 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:25:54,035 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:25:54,037 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:25:54,224 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:25:54,224 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:25:54,377 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:25:54,377 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:25:54,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:25:54 BoogieIcfgContainer [2024-10-11 19:25:54,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:25:54,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:25:54,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:25:54,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:25:54,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:25:53" (1/3) ... [2024-10-11 19:25:54,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2516aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:25:54, skipping insertion in model container [2024-10-11 19:25:54,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:25:53" (2/3) ... [2024-10-11 19:25:54,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2516aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:25:54, skipping insertion in model container [2024-10-11 19:25:54,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:25:54" (3/3) ... [2024-10-11 19:25:54,387 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2024-10-11 19:25:54,402 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:25:54,403 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-11 19:25:54,403 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:25:54,458 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:25:54,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 122 flow [2024-10-11 19:25:54,510 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-10-11 19:25:54,511 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:25:54,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 9/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-10-11 19:25:54,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 122 flow [2024-10-11 19:25:54,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 51 transitions, 114 flow [2024-10-11 19:25:54,534 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:25:54,540 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;@137f6f65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:25:54,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-11 19:25:54,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:25:54,547 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-10-11 19:25:54,547 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:25:54,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:54,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:54,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:54,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1513825994, now seen corresponding path program 1 times [2024-10-11 19:25:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:54,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820514567] [2024-10-11 19:25:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:54,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820514567] [2024-10-11 19:25:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820514567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:25:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328273829] [2024-10-11 19:25:54,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:54,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:25:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:25:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:25:54,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-10-11 19:25:54,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:54,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:54,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-10-11 19:25:54,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:55,194 INFO L124 PetriNetUnfolderBase]: 459/863 cut-off events. [2024-10-11 19:25:55,195 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-11 19:25:55,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 863 events. 459/863 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4264 event pairs, 245 based on Foata normal form. 90/827 useless extension candidates. Maximal degree in co-relation 1557. Up to 520 conditions per place. [2024-10-11 19:25:55,204 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-10-11 19:25:55,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 225 flow [2024-10-11 19:25:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:25:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:25:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-11 19:25:55,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-10-11 19:25:55,219 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 114 flow. Second operand 4 states and 113 transitions. [2024-10-11 19:25:55,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 225 flow [2024-10-11 19:25:55,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 215 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:25:55,227 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 98 flow [2024-10-11 19:25:55,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-10-11 19:25:55,235 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-10-11 19:25:55,235 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 98 flow [2024-10-11 19:25:55,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:55,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:55,236 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:55,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:25:55,236 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:55,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1513825993, now seen corresponding path program 1 times [2024-10-11 19:25:55,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:55,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807634813] [2024-10-11 19:25:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807634813] [2024-10-11 19:25:55,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807634813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:55,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:55,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:25:55,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079612346] [2024-10-11 19:25:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:55,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:25:55,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:25:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:25:55,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-10-11 19:25:55,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:55,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:55,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-10-11 19:25:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:55,721 INFO L124 PetriNetUnfolderBase]: 574/1065 cut-off events. [2024-10-11 19:25:55,722 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-11 19:25:55,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 1065 events. 574/1065 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5035 event pairs, 179 based on Foata normal form. 9/927 useless extension candidates. Maximal degree in co-relation 695. Up to 755 conditions per place. [2024-10-11 19:25:55,729 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 59 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-10-11 19:25:55,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 293 flow [2024-10-11 19:25:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:25:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:25:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-10-11 19:25:55,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-10-11 19:25:55,731 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 98 flow. Second operand 5 states and 143 transitions. [2024-10-11 19:25:55,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 293 flow [2024-10-11 19:25:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:25:55,734 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 128 flow [2024-10-11 19:25:55,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-10-11 19:25:55,734 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-10-11 19:25:55,735 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 128 flow [2024-10-11 19:25:55,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:55,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:55,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:55,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:25:55,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:55,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash 428649340, now seen corresponding path program 1 times [2024-10-11 19:25:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:55,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176558011] [2024-10-11 19:25:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:55,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:55,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176558011] [2024-10-11 19:25:55,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176558011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:55,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:55,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:25:55,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639143124] [2024-10-11 19:25:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:55,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:25:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:25:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:25:55,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-10-11 19:25:55,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:55,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:55,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-10-11 19:25:55,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:56,025 INFO L124 PetriNetUnfolderBase]: 823/1512 cut-off events. [2024-10-11 19:25:56,025 INFO L125 PetriNetUnfolderBase]: For 255/258 co-relation queries the response was YES. [2024-10-11 19:25:56,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 1512 events. 823/1512 cut-off events. For 255/258 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7707 event pairs, 363 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 1126. Up to 857 conditions per place. [2024-10-11 19:25:56,034 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-10-11 19:25:56,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 370 flow [2024-10-11 19:25:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:25:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:25:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-10-11 19:25:56,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 19:25:56,036 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 128 flow. Second operand 4 states and 135 transitions. [2024-10-11 19:25:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 370 flow [2024-10-11 19:25:56,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:25:56,039 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 159 flow [2024-10-11 19:25:56,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-10-11 19:25:56,040 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-10-11 19:25:56,040 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 159 flow [2024-10-11 19:25:56,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:56,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:56,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:56,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:25:56,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:56,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:56,041 INFO L85 PathProgramCache]: Analyzing trace with hash 944670899, now seen corresponding path program 1 times [2024-10-11 19:25:56,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:56,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713846258] [2024-10-11 19:25:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:56,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:56,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713846258] [2024-10-11 19:25:56,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713846258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:56,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:56,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:25:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360849082] [2024-10-11 19:25:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:56,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:25:56,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:25:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:25:56,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-10-11 19:25:56,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:56,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:56,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-10-11 19:25:56,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:56,246 INFO L124 PetriNetUnfolderBase]: 957/1712 cut-off events. [2024-10-11 19:25:56,247 INFO L125 PetriNetUnfolderBase]: For 518/522 co-relation queries the response was YES. [2024-10-11 19:25:56,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 1712 events. 957/1712 cut-off events. For 518/522 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8850 event pairs, 395 based on Foata normal form. 14/1573 useless extension candidates. Maximal degree in co-relation 1265. Up to 1191 conditions per place. [2024-10-11 19:25:56,257 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 55 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-11 19:25:56,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 328 flow [2024-10-11 19:25:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:25:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:25:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-10-11 19:25:56,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-10-11 19:25:56,259 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 159 flow. Second operand 3 states and 103 transitions. [2024-10-11 19:25:56,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 328 flow [2024-10-11 19:25:56,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:25:56,265 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 168 flow [2024-10-11 19:25:56,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-10-11 19:25:56,266 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-10-11 19:25:56,267 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 168 flow [2024-10-11 19:25:56,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:56,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:56,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:56,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:25:56,267 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:56,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 551578351, now seen corresponding path program 1 times [2024-10-11 19:25:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:56,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796844255] [2024-10-11 19:25:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:56,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796844255] [2024-10-11 19:25:56,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796844255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:56,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:56,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:25:56,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235614222] [2024-10-11 19:25:56,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:56,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:25:56,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:25:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:25:56,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-10-11 19:25:56,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:56,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:56,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-10-11 19:25:56,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:56,466 INFO L124 PetriNetUnfolderBase]: 499/1032 cut-off events. [2024-10-11 19:25:56,466 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-10-11 19:25:56,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1032 events. 499/1032 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4789 event pairs, 105 based on Foata normal form. 60/1020 useless extension candidates. Maximal degree in co-relation 989. Up to 634 conditions per place. [2024-10-11 19:25:56,472 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-10-11 19:25:56,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 300 flow [2024-10-11 19:25:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:25:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:25:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-11 19:25:56,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-10-11 19:25:56,473 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 168 flow. Second operand 3 states and 91 transitions. [2024-10-11 19:25:56,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 300 flow [2024-10-11 19:25:56,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 19:25:56,477 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 170 flow [2024-10-11 19:25:56,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-10-11 19:25:56,478 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-10-11 19:25:56,478 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 170 flow [2024-10-11 19:25:56,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:56,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:56,478 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:56,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:25:56,479 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:56,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1443641797, now seen corresponding path program 1 times [2024-10-11 19:25:56,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:56,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725679278] [2024-10-11 19:25:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:56,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725679278] [2024-10-11 19:25:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725679278] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:25:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783396065] [2024-10-11 19:25:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:56,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:25:56,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:25:56,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:25:56,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:25:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:56,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 19:25:56,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:25:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:56,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:25:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:57,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783396065] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:25:57,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:25:57,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-10-11 19:25:57,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575473033] [2024-10-11 19:25:57,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:25:57,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:25:57,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:25:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:25:57,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-11 19:25:57,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 170 flow. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:57,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:57,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-11 19:25:57,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:57,886 INFO L124 PetriNetUnfolderBase]: 1740/3508 cut-off events. [2024-10-11 19:25:57,886 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2024-10-11 19:25:57,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8219 conditions, 3508 events. 1740/3508 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19723 event pairs, 262 based on Foata normal form. 54/3327 useless extension candidates. Maximal degree in co-relation 2561. Up to 699 conditions per place. [2024-10-11 19:25:57,903 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 194 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-10-11 19:25:57,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 231 transitions, 1170 flow [2024-10-11 19:25:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:25:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:25:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-10-11 19:25:57,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-10-11 19:25:57,905 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 170 flow. Second operand 15 states and 425 transitions. [2024-10-11 19:25:57,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 231 transitions, 1170 flow [2024-10-11 19:25:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 231 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:25:57,911 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 417 flow [2024-10-11 19:25:57,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-11 19:25:57,912 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-10-11 19:25:57,912 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 417 flow [2024-10-11 19:25:57,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:57,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:57,912 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:57,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:25:58,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:25:58,117 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:58,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash 193444722, now seen corresponding path program 1 times [2024-10-11 19:25:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076431229] [2024-10-11 19:25:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:58,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:58,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076431229] [2024-10-11 19:25:58,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076431229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:58,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:25:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088601223] [2024-10-11 19:25:58,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:58,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:25:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:25:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:25:58,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-10-11 19:25:58,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:58,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:58,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-10-11 19:25:58,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:58,556 INFO L124 PetriNetUnfolderBase]: 1695/3428 cut-off events. [2024-10-11 19:25:58,556 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-10-11 19:25:58,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8806 conditions, 3428 events. 1695/3428 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19780 event pairs, 958 based on Foata normal form. 0/3314 useless extension candidates. Maximal degree in co-relation 7328. Up to 2028 conditions per place. [2024-10-11 19:25:58,578 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 55 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-10-11 19:25:58,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 591 flow [2024-10-11 19:25:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:25:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:25:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-10-11 19:25:58,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-10-11 19:25:58,580 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 417 flow. Second operand 5 states and 117 transitions. [2024-10-11 19:25:58,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 591 flow [2024-10-11 19:25:58,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 581 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-10-11 19:25:58,592 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 441 flow [2024-10-11 19:25:58,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-10-11 19:25:58,593 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 35 predicate places. [2024-10-11 19:25:58,593 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 441 flow [2024-10-11 19:25:58,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:58,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:58,593 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:58,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:25:58,593 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:58,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 193444723, now seen corresponding path program 1 times [2024-10-11 19:25:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:58,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077679513] [2024-10-11 19:25:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:58,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:58,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077679513] [2024-10-11 19:25:58,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077679513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:58,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:58,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 19:25:58,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771735208] [2024-10-11 19:25:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:58,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 19:25:58,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 19:25:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:25:58,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-11 19:25:58,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 441 flow. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:58,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:58,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-11 19:25:58,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:59,342 INFO L124 PetriNetUnfolderBase]: 1885/3762 cut-off events. [2024-10-11 19:25:59,342 INFO L125 PetriNetUnfolderBase]: For 3007/3007 co-relation queries the response was YES. [2024-10-11 19:25:59,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10016 conditions, 3762 events. 1885/3762 cut-off events. For 3007/3007 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 21550 event pairs, 514 based on Foata normal form. 0/3616 useless extension candidates. Maximal degree in co-relation 8461. Up to 2781 conditions per place. [2024-10-11 19:25:59,371 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 113 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2024-10-11 19:25:59,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 132 transitions, 898 flow [2024-10-11 19:25:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:25:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:25:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-10-11 19:25:59,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2024-10-11 19:25:59,378 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 441 flow. Second operand 8 states and 205 transitions. [2024-10-11 19:25:59,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 132 transitions, 898 flow [2024-10-11 19:25:59,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 852 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:25:59,392 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 476 flow [2024-10-11 19:25:59,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-10-11 19:25:59,393 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 41 predicate places. [2024-10-11 19:25:59,394 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 476 flow [2024-10-11 19:25:59,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:59,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:59,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:59,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:25:59,394 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:25:59,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash 604666711, now seen corresponding path program 1 times [2024-10-11 19:25:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:59,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413125825] [2024-10-11 19:25:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413125825] [2024-10-11 19:25:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413125825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:25:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272229964] [2024-10-11 19:25:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:59,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:25:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:25:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:25:59,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-10-11 19:25:59,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:59,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:59,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-10-11 19:25:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:59,950 INFO L124 PetriNetUnfolderBase]: 2725/5696 cut-off events. [2024-10-11 19:25:59,951 INFO L125 PetriNetUnfolderBase]: For 4048/4048 co-relation queries the response was YES. [2024-10-11 19:25:59,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14627 conditions, 5696 events. 2725/5696 cut-off events. For 4048/4048 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 38070 event pairs, 1359 based on Foata normal form. 137/5631 useless extension candidates. Maximal degree in co-relation 12613. Up to 3244 conditions per place. [2024-10-11 19:25:59,984 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 122 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-10-11 19:25:59,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 1114 flow [2024-10-11 19:25:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:25:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:25:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-10-11 19:25:59,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-10-11 19:25:59,985 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 476 flow. Second operand 3 states and 104 transitions. [2024-10-11 19:25:59,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 1114 flow [2024-10-11 19:26:00,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 1094 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-11 19:26:00,002 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 477 flow [2024-10-11 19:26:00,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-10-11 19:26:00,003 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-10-11 19:26:00,003 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 477 flow [2024-10-11 19:26:00,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:00,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:00,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:26:00,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:26:00,004 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:00,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1060628401, now seen corresponding path program 1 times [2024-10-11 19:26:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:00,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213466256] [2024-10-11 19:26:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:00,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:00,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213466256] [2024-10-11 19:26:00,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213466256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:26:00,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:26:00,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 19:26:00,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015847426] [2024-10-11 19:26:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:26:00,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:26:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:26:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:26:00,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-10-11 19:26:00,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:00,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:00,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-10-11 19:26:00,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:26:01,483 INFO L124 PetriNetUnfolderBase]: 3462/7027 cut-off events. [2024-10-11 19:26:01,487 INFO L125 PetriNetUnfolderBase]: For 5802/5802 co-relation queries the response was YES. [2024-10-11 19:26:01,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19737 conditions, 7027 events. 3462/7027 cut-off events. For 5802/5802 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 44936 event pairs, 786 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 16162. Up to 3938 conditions per place. [2024-10-11 19:26:01,533 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 156 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2024-10-11 19:26:01,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 1281 flow [2024-10-11 19:26:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:26:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:26:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 277 transitions. [2024-10-11 19:26:01,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512962962962963 [2024-10-11 19:26:01,534 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 477 flow. Second operand 10 states and 277 transitions. [2024-10-11 19:26:01,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 1281 flow [2024-10-11 19:26:01,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 178 transitions, 1271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:26:01,553 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 521 flow [2024-10-11 19:26:01,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=521, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-10-11 19:26:01,554 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 51 predicate places. [2024-10-11 19:26:01,555 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 521 flow [2024-10-11 19:26:01,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:01,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:01,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:26:01,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 19:26:01,556 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:01,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:01,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1301296529, now seen corresponding path program 1 times [2024-10-11 19:26:01,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:01,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87245512] [2024-10-11 19:26:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:01,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:01,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:01,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87245512] [2024-10-11 19:26:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87245512] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:26:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315474612] [2024-10-11 19:26:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:01,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:01,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:26:01,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:26:01,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:26:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:01,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:26:01,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:26:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:26:01,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:26:01,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315474612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:26:01,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:26:01,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-11 19:26:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434523969] [2024-10-11 19:26:01,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:26:01,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:26:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:01,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:26:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:26:01,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-10-11 19:26:01,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 521 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:01,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:01,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-10-11 19:26:01,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:26:02,524 INFO L124 PetriNetUnfolderBase]: 3504/7050 cut-off events. [2024-10-11 19:26:02,525 INFO L125 PetriNetUnfolderBase]: For 6713/6713 co-relation queries the response was YES. [2024-10-11 19:26:02,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20237 conditions, 7050 events. 3504/7050 cut-off events. For 6713/6713 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 46039 event pairs, 2843 based on Foata normal form. 19/6839 useless extension candidates. Maximal degree in co-relation 16629. Up to 6094 conditions per place. [2024-10-11 19:26:02,562 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 69 selfloop transitions, 1 changer transitions 2/82 dead transitions. [2024-10-11 19:26:02,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 82 transitions, 661 flow [2024-10-11 19:26:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:26:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:26:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-10-11 19:26:02,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-10-11 19:26:02,566 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 521 flow. Second operand 3 states and 77 transitions. [2024-10-11 19:26:02,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 82 transitions, 661 flow [2024-10-11 19:26:02,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 82 transitions, 643 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-11 19:26:02,588 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 498 flow [2024-10-11 19:26:02,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-10-11 19:26:02,588 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 47 predicate places. [2024-10-11 19:26:02,588 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 498 flow [2024-10-11 19:26:02,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:02,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:02,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:26:02,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:26:02,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:02,793 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:02,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1054932405, now seen corresponding path program 1 times [2024-10-11 19:26:02,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:02,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132722640] [2024-10-11 19:26:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:03,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132722640] [2024-10-11 19:26:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132722640] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:26:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519368909] [2024-10-11 19:26:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:03,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:03,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:26:03,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:26:03,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:26:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:03,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 19:26:03,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:26:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:03,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:26:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:03,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519368909] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:26:03,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:26:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 17 [2024-10-11 19:26:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259655137] [2024-10-11 19:26:03,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:26:03,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 19:26:03,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 19:26:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-10-11 19:26:03,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-11 19:26:03,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 498 flow. Second operand has 19 states, 19 states have (on average 17.94736842105263) internal successors, (341), 19 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:03,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:03,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-11 19:26:03,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:26:06,200 INFO L124 PetriNetUnfolderBase]: 6645/13333 cut-off events. [2024-10-11 19:26:06,200 INFO L125 PetriNetUnfolderBase]: For 13434/13434 co-relation queries the response was YES. [2024-10-11 19:26:06,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38359 conditions, 13333 events. 6645/13333 cut-off events. For 13434/13434 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 92341 event pairs, 671 based on Foata normal form. 518/13489 useless extension candidates. Maximal degree in co-relation 38324. Up to 2269 conditions per place. [2024-10-11 19:26:06,291 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 432 selfloop transitions, 122 changer transitions 0/562 dead transitions. [2024-10-11 19:26:06,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 562 transitions, 3774 flow [2024-10-11 19:26:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-11 19:26:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-11 19:26:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1089 transitions. [2024-10-11 19:26:06,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-10-11 19:26:06,298 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 498 flow. Second operand 44 states and 1089 transitions. [2024-10-11 19:26:06,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 562 transitions, 3774 flow [2024-10-11 19:26:06,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 562 transitions, 3771 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:26:06,348 INFO L231 Difference]: Finished difference. Result has 166 places, 176 transitions, 1733 flow [2024-10-11 19:26:06,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1733, PETRI_PLACES=166, PETRI_TRANSITIONS=176} [2024-10-11 19:26:06,349 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 117 predicate places. [2024-10-11 19:26:06,349 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 176 transitions, 1733 flow [2024-10-11 19:26:06,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.94736842105263) internal successors, (341), 19 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:06,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:06,350 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:26:06,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 19:26:06,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:06,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:06,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash -957330019, now seen corresponding path program 1 times [2024-10-11 19:26:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926557097] [2024-10-11 19:26:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:06,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:26:07,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926557097] [2024-10-11 19:26:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926557097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:26:07,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:26:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 19:26:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293140205] [2024-10-11 19:26:07,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:26:07,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:26:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:26:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:26:07,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-10-11 19:26:07,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 176 transitions, 1733 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:07,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:07,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-10-11 19:26:07,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:26:10,470 INFO L124 PetriNetUnfolderBase]: 10095/20048 cut-off events. [2024-10-11 19:26:10,470 INFO L125 PetriNetUnfolderBase]: For 63653/63653 co-relation queries the response was YES. [2024-10-11 19:26:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70183 conditions, 20048 events. 10095/20048 cut-off events. For 63653/63653 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 144015 event pairs, 2233 based on Foata normal form. 0/19649 useless extension candidates. Maximal degree in co-relation 70117. Up to 3829 conditions per place. [2024-10-11 19:26:10,686 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 149 selfloop transitions, 227 changer transitions 0/386 dead transitions. [2024-10-11 19:26:10,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 386 transitions, 4240 flow [2024-10-11 19:26:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 19:26:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 19:26:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 407 transitions. [2024-10-11 19:26:10,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4433551198257081 [2024-10-11 19:26:10,689 INFO L175 Difference]: Start difference. First operand has 166 places, 176 transitions, 1733 flow. Second operand 17 states and 407 transitions. [2024-10-11 19:26:10,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 386 transitions, 4240 flow [2024-10-11 19:26:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 386 transitions, 3781 flow, removed 227 selfloop flow, removed 1 redundant places. [2024-10-11 19:26:10,971 INFO L231 Difference]: Finished difference. Result has 185 places, 288 transitions, 3236 flow [2024-10-11 19:26:10,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3236, PETRI_PLACES=185, PETRI_TRANSITIONS=288} [2024-10-11 19:26:10,972 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-10-11 19:26:10,972 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 288 transitions, 3236 flow [2024-10-11 19:26:10,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:10,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:10,973 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:26:10,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 19:26:10,973 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:10,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:10,974 INFO L85 PathProgramCache]: Analyzing trace with hash -194492121, now seen corresponding path program 1 times [2024-10-11 19:26:10,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:10,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40187191] [2024-10-11 19:26:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:10,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:11,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:11,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40187191] [2024-10-11 19:26:11,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40187191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:26:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307868156] [2024-10-11 19:26:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:11,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:26:11,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:26:11,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:26:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:11,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 19:26:11,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:26:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:26:11,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:26:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:26:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307868156] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:26:11,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:26:11,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 18 [2024-10-11 19:26:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405123645] [2024-10-11 19:26:11,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:26:11,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 19:26:11,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 19:26:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-10-11 19:26:11,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-11 19:26:11,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 288 transitions, 3236 flow. Second operand has 20 states, 20 states have (on average 18.85) internal successors, (377), 20 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:11,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:11,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-11 19:26:11,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:26:15,829 INFO L124 PetriNetUnfolderBase]: 10283/20115 cut-off events. [2024-10-11 19:26:15,830 INFO L125 PetriNetUnfolderBase]: For 67462/67468 co-relation queries the response was YES. [2024-10-11 19:26:16,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71927 conditions, 20115 events. 10283/20115 cut-off events. For 67462/67468 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 141574 event pairs, 1567 based on Foata normal form. 202/19950 useless extension candidates. Maximal degree in co-relation 71856. Up to 3511 conditions per place. [2024-10-11 19:26:16,082 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 479 selfloop transitions, 201 changer transitions 0/688 dead transitions. [2024-10-11 19:26:16,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 688 transitions, 7510 flow [2024-10-11 19:26:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 19:26:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-11 19:26:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 949 transitions. [2024-10-11 19:26:16,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.474974974974975 [2024-10-11 19:26:16,088 INFO L175 Difference]: Start difference. First operand has 185 places, 288 transitions, 3236 flow. Second operand 37 states and 949 transitions. [2024-10-11 19:26:16,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 688 transitions, 7510 flow [2024-10-11 19:26:16,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 688 transitions, 7071 flow, removed 215 selfloop flow, removed 3 redundant places. [2024-10-11 19:26:16,465 INFO L231 Difference]: Finished difference. Result has 234 places, 328 transitions, 4427 flow [2024-10-11 19:26:16,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4427, PETRI_PLACES=234, PETRI_TRANSITIONS=328} [2024-10-11 19:26:16,466 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 185 predicate places. [2024-10-11 19:26:16,466 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 328 transitions, 4427 flow [2024-10-11 19:26:16,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.85) internal successors, (377), 20 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:16,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:16,467 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:26:16,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 19:26:16,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 19:26:16,668 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:16,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1005798662, now seen corresponding path program 1 times [2024-10-11 19:26:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:16,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261993023] [2024-10-11 19:26:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261993023] [2024-10-11 19:26:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261993023] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:26:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106335994] [2024-10-11 19:26:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:16,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:16,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:26:16,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:26:16,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:26:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:16,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:26:16,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:26:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:16,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:26:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:16,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106335994] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:26:16,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:26:16,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 19:26:16,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979065696] [2024-10-11 19:26:16,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:26:16,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:26:16,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:26:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:26:16,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-10-11 19:26:16,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 328 transitions, 4427 flow. Second operand has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:16,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:16,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-10-11 19:26:16,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:26:25,254 INFO L124 PetriNetUnfolderBase]: 20480/40485 cut-off events. [2024-10-11 19:26:25,254 INFO L125 PetriNetUnfolderBase]: For 245591/245616 co-relation queries the response was YES. [2024-10-11 19:26:25,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159490 conditions, 40485 events. 20480/40485 cut-off events. For 245591/245616 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 307550 event pairs, 6454 based on Foata normal form. 1082/41165 useless extension candidates. Maximal degree in co-relation 159404. Up to 8810 conditions per place. [2024-10-11 19:26:26,007 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 772 selfloop transitions, 193 changer transitions 0/974 dead transitions. [2024-10-11 19:26:26,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 974 transitions, 14863 flow [2024-10-11 19:26:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:26:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:26:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 413 transitions. [2024-10-11 19:26:26,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952861952861953 [2024-10-11 19:26:26,010 INFO L175 Difference]: Start difference. First operand has 234 places, 328 transitions, 4427 flow. Second operand 11 states and 413 transitions. [2024-10-11 19:26:26,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 974 transitions, 14863 flow [2024-10-11 19:26:27,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 974 transitions, 13729 flow, removed 334 selfloop flow, removed 27 redundant places. [2024-10-11 19:26:27,598 INFO L231 Difference]: Finished difference. Result has 226 places, 473 transitions, 6530 flow [2024-10-11 19:26:27,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3732, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6530, PETRI_PLACES=226, PETRI_TRANSITIONS=473} [2024-10-11 19:26:27,599 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 177 predicate places. [2024-10-11 19:26:27,599 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 473 transitions, 6530 flow [2024-10-11 19:26:27,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:27,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:27,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:26:27,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:26:27,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 19:26:27,800 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:27,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -958137939, now seen corresponding path program 1 times [2024-10-11 19:26:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650288839] [2024-10-11 19:26:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650288839] [2024-10-11 19:26:28,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650288839] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:26:28,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823334976] [2024-10-11 19:26:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:28,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:28,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:26:28,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:26:28,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:26:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:28,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-11 19:26:28,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:26:28,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-10-11 19:26:28,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:26:28,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2024-10-11 19:26:29,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-10-11 19:26:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:29,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:26:30,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2024-10-11 19:26:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:30,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823334976] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:26:30,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:26:30,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-10-11 19:26:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065267393] [2024-10-11 19:26:30,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:26:30,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 19:26:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 19:26:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 19:26:31,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-10-11 19:26:31,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 473 transitions, 6530 flow. Second operand has 34 states, 34 states have (on average 18.08823529411765) internal successors, (615), 34 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:31,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:31,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-10-11 19:26:31,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:26:47,128 INFO L124 PetriNetUnfolderBase]: 28354/56085 cut-off events. [2024-10-11 19:26:47,128 INFO L125 PetriNetUnfolderBase]: For 378451/378451 co-relation queries the response was YES. [2024-10-11 19:26:48,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227080 conditions, 56085 events. 28354/56085 cut-off events. For 378451/378451 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 451073 event pairs, 4038 based on Foata normal form. 0/55627 useless extension candidates. Maximal degree in co-relation 226988. Up to 9902 conditions per place. [2024-10-11 19:26:48,325 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 435 selfloop transitions, 623 changer transitions 44/1111 dead transitions. [2024-10-11 19:26:48,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1111 transitions, 14355 flow [2024-10-11 19:26:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-11 19:26:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-10-11 19:26:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1415 transitions. [2024-10-11 19:26:48,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4159318048206937 [2024-10-11 19:26:48,329 INFO L175 Difference]: Start difference. First operand has 226 places, 473 transitions, 6530 flow. Second operand 63 states and 1415 transitions. [2024-10-11 19:26:48,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1111 transitions, 14355 flow [2024-10-11 19:26:51,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1111 transitions, 14145 flow, removed 105 selfloop flow, removed 0 redundant places. [2024-10-11 19:26:51,565 INFO L231 Difference]: Finished difference. Result has 295 places, 698 transitions, 11205 flow [2024-10-11 19:26:51,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6446, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=11205, PETRI_PLACES=295, PETRI_TRANSITIONS=698} [2024-10-11 19:26:51,566 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 246 predicate places. [2024-10-11 19:26:51,566 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 698 transitions, 11205 flow [2024-10-11 19:26:51,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 18.08823529411765) internal successors, (615), 34 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:51,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:26:51,567 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2024-10-11 19:26:51,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 19:26:51,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 19:26:51,768 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-11 19:26:51,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:26:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1471978053, now seen corresponding path program 2 times [2024-10-11 19:26:51,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:26:51,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494204641] [2024-10-11 19:26:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:26:51,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:26:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:26:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:26:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494204641] [2024-10-11 19:26:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494204641] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:26:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470732075] [2024-10-11 19:26:52,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:26:52,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:26:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:26:52,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:26:52,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 19:26:52,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:26:52,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:26:52,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 19:26:52,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:26:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:52,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:26:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:26:52,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470732075] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:26:52,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:26:52,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2024-10-11 19:26:52,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126705836] [2024-10-11 19:26:52,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:26:52,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 19:26:52,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:26:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 19:26:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-10-11 19:26:53,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-11 19:26:53,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 698 transitions, 11205 flow. Second operand has 27 states, 27 states have (on average 19.22222222222222) internal successors, (519), 27 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:26:53,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:26:53,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-11 19:26:53,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand