./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC --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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:01:53,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:01:54,001 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 00:01:54,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:01:54,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:01:54,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:01:54,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:01:54,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:01:54,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:01:54,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:01:54,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:01:54,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:01:54,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:01:54,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:01:54,047 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:01:54,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:01:54,048 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:01:54,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:01:54,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:01:54,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:01:54,048 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 00:01:54,048 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 00:01:54,048 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:01:54,049 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:01:54,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:01:54,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:01:54,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:01:54,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:01:54,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:01:54,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:01:54,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:01:54,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:01:54,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:01:54,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:01:54,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:01:54,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:01:54,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:01:54,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:01:54,051 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC 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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-24 00:01:54,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:01:54,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:01:54,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:01:54,366 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:01:54,368 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:01:54,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-24 00:01:57,338 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/data/a9a56ed5a/949fd54365d849059fc0a0c3d3b3776c/FLAG8f49788e2 [2024-11-24 00:01:57,639 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:01:57,644 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-24 00:01:57,659 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/data/a9a56ed5a/949fd54365d849059fc0a0c3d3b3776c/FLAG8f49788e2 [2024-11-24 00:01:57,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/data/a9a56ed5a/949fd54365d849059fc0a0c3d3b3776c [2024-11-24 00:01:57,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:01:57,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:01:57,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:01:57,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:01:57,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:01:57,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:01:57" (1/1) ... [2024-11-24 00:01:57,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30676020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:57, skipping insertion in model container [2024-11-24 00:01:57,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:01:57" (1/1) ... [2024-11-24 00:01:57,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:01:57,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:01:57,961 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:01:57,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:01:58,018 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:01:58,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58 WrapperNode [2024-11-24 00:01:58,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:01:58,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:01:58,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:01:58,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:01:58,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,068 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 94 [2024-11-24 00:01:58,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:01:58,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:01:58,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:01:58,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:01:58,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,101 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:01:58,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,109 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:01:58,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:01:58,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:01:58,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:01:58,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (1/1) ... [2024-11-24 00:01:58,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:01:58,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:01:58,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:01:58,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:01:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:01:58,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 00:01:58,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 00:01:58,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 00:01:58,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 00:01:58,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 00:01:58,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 00:01:58,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-24 00:01:58,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-24 00:01:58,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:01:58,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:01:58,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:01:58,201 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:01:58,290 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:01:58,292 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:01:58,550 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:01:58,551 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:01:58,704 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:01:58,705 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:01:58,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:01:58 BoogieIcfgContainer [2024-11-24 00:01:58,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:01:58,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:01:58,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:01:58,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:01:58,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:01:57" (1/3) ... [2024-11-24 00:01:58,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a0c563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:01:58, skipping insertion in model container [2024-11-24 00:01:58,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:58" (2/3) ... [2024-11-24 00:01:58,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a0c563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:01:58, skipping insertion in model container [2024-11-24 00:01:58,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:01:58" (3/3) ... [2024-11-24 00:01:58,717 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-24 00:01:58,732 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:01:58,733 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 39 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-11-24 00:01:58,734 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:01:58,826 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-24 00:01:58,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-24 00:01:58,918 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-24 00:01:58,922 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 00:01:58,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-24 00:01:58,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-24 00:01:58,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-24 00:01:58,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:01:58,958 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;@314ec7b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:01:58,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-24 00:01:58,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:01:58,980 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-24 00:01:58,981 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 00:01:58,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:01:58,981 INFO L206 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] [2024-11-24 00:01:58,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:01:58,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:01:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2024390961, now seen corresponding path program 1 times [2024-11-24 00:01:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:01:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370318296] [2024-11-24 00:01:58,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:01:59,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:01:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:01:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:01:59,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:01:59,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370318296] [2024-11-24 00:01:59,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370318296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:01:59,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:01:59,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:01:59,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509761409] [2024-11-24 00:01:59,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:01:59,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:01:59,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:01:59,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:01:59,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:01:59,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-24 00:01:59,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:01:59,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:01:59,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-24 00:01:59,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:00,420 INFO L124 PetriNetUnfolderBase]: 4206/5691 cut-off events. [2024-11-24 00:02:00,420 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2024-11-24 00:02:00,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 5691 events. 4206/5691 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24076 event pairs, 1080 based on Foata normal form. 2/5302 useless extension candidates. Maximal degree in co-relation 10316. Up to 4714 conditions per place. [2024-11-24 00:02:00,472 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-24 00:02:00,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-24 00:02:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:02:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:02:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-24 00:02:00,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-24 00:02:00,494 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 81 transitions. [2024-11-24 00:02:00,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-24 00:02:00,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-24 00:02:00,521 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-24 00:02:00,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-24 00:02:00,531 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-24 00:02:00,531 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-24 00:02:00,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:00,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:00,532 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:00,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:02:00,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:00,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash 530523890, now seen corresponding path program 1 times [2024-11-24 00:02:00,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:00,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163192523] [2024-11-24 00:02:00,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:02:00,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:02:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163192523] [2024-11-24 00:02:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163192523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:00,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:02:00,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:02:00,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253258011] [2024-11-24 00:02:00,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:00,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:02:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:00,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:02:00,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:02:00,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:00,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:00,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:00,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:00,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:02,197 INFO L124 PetriNetUnfolderBase]: 9567/12582 cut-off events. [2024-11-24 00:02:02,198 INFO L125 PetriNetUnfolderBase]: For 1506/1506 co-relation queries the response was YES. [2024-11-24 00:02:02,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27992 conditions, 12582 events. 9567/12582 cut-off events. For 1506/1506 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 59805 event pairs, 3002 based on Foata normal form. 0/11905 useless extension candidates. Maximal degree in co-relation 3416. Up to 6920 conditions per place. [2024-11-24 00:02:02,281 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 94 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2024-11-24 00:02:02,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 106 transitions, 491 flow [2024-11-24 00:02:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:02:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:02:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-24 00:02:02,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-24 00:02:02,285 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 133 transitions. [2024-11-24 00:02:02,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 106 transitions, 491 flow [2024-11-24 00:02:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 106 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:02:02,290 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 161 flow [2024-11-24 00:02:02,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-24 00:02:02,291 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-24 00:02:02,291 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 161 flow [2024-11-24 00:02:02,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:02,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:02,291 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:02,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:02:02,292 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:02,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1068312236, now seen corresponding path program 2 times [2024-11-24 00:02:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:02,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833422858] [2024-11-24 00:02:02,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:02:02,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:02,329 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:02:02,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:02,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833422858] [2024-11-24 00:02:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833422858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:02:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071244324] [2024-11-24 00:02:02,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:02:02,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:02:02,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:02:02,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:02:02,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:02:02,573 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:02:02,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:02,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:02:02,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:02:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:02,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:02:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:02,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071244324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:02:02,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:02:02,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-24 00:02:02,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180358379] [2024-11-24 00:02:02,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:02:02,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:02:02,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:02,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:02:02,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:02:02,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:02,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 161 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:02,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:02,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:02,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:04,763 INFO L124 PetriNetUnfolderBase]: 13384/17547 cut-off events. [2024-11-24 00:02:04,764 INFO L125 PetriNetUnfolderBase]: For 6108/6108 co-relation queries the response was YES. [2024-11-24 00:02:04,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45646 conditions, 17547 events. 13384/17547 cut-off events. For 6108/6108 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 87225 event pairs, 1081 based on Foata normal form. 332/17873 useless extension candidates. Maximal degree in co-relation 25859. Up to 3569 conditions per place. [2024-11-24 00:02:04,865 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 239 selfloop transitions, 36 changer transitions 0/277 dead transitions. [2024-11-24 00:02:04,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 277 transitions, 1362 flow [2024-11-24 00:02:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:02:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 00:02:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 360 transitions. [2024-11-24 00:02:04,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-24 00:02:04,868 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 161 flow. Second operand 14 states and 360 transitions. [2024-11-24 00:02:04,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 277 transitions, 1362 flow [2024-11-24 00:02:04,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 277 transitions, 1362 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:02:04,878 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 411 flow [2024-11-24 00:02:04,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=411, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2024-11-24 00:02:04,879 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-24 00:02:04,879 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 411 flow [2024-11-24 00:02:04,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:04,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:04,880 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:04,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:02:05,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:02:05,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:05,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:05,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2060555794, now seen corresponding path program 3 times [2024-11-24 00:02:05,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:05,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046629178] [2024-11-24 00:02:05,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:02:05,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:05,106 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 00:02:05,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:05,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:05,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046629178] [2024-11-24 00:02:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046629178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:05,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:02:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:02:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172780409] [2024-11-24 00:02:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:05,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:02:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:05,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:02:05,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:02:05,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:05,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:05,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:05,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:07,410 INFO L124 PetriNetUnfolderBase]: 19352/25471 cut-off events. [2024-11-24 00:02:07,410 INFO L125 PetriNetUnfolderBase]: For 32999/32999 co-relation queries the response was YES. [2024-11-24 00:02:07,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77847 conditions, 25471 events. 19352/25471 cut-off events. For 32999/32999 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 128720 event pairs, 5926 based on Foata normal form. 62/25517 useless extension candidates. Maximal degree in co-relation 59952. Up to 11589 conditions per place. [2024-11-24 00:02:07,556 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 140 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2024-11-24 00:02:07,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 161 transitions, 1098 flow [2024-11-24 00:02:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:02:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:02:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-24 00:02:07,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-24 00:02:07,560 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 411 flow. Second operand 5 states and 132 transitions. [2024-11-24 00:02:07,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 161 transitions, 1098 flow [2024-11-24 00:02:07,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 161 transitions, 1051 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-24 00:02:07,961 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 510 flow [2024-11-24 00:02:07,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2024-11-24 00:02:07,962 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-11-24 00:02:07,962 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 510 flow [2024-11-24 00:02:07,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:07,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:07,962 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:07,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:02:07,963 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:07,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1270083022, now seen corresponding path program 1 times [2024-11-24 00:02:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:07,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822132086] [2024-11-24 00:02:07,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:02:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:02:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:08,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:08,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822132086] [2024-11-24 00:02:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822132086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:08,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:02:08,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:02:08,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286833559] [2024-11-24 00:02:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:08,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:02:08,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:08,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:02:08,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:02:08,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:08,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:08,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:08,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:08,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:10,146 INFO L124 PetriNetUnfolderBase]: 21250/28067 cut-off events. [2024-11-24 00:02:10,146 INFO L125 PetriNetUnfolderBase]: For 45521/45635 co-relation queries the response was YES. [2024-11-24 00:02:10,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88345 conditions, 28067 events. 21250/28067 cut-off events. For 45521/45635 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 146237 event pairs, 6437 based on Foata normal form. 0/26621 useless extension candidates. Maximal degree in co-relation 78555. Up to 13895 conditions per place. [2024-11-24 00:02:10,281 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 110 selfloop transitions, 15 changer transitions 15/144 dead transitions. [2024-11-24 00:02:10,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 144 transitions, 1012 flow [2024-11-24 00:02:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:02:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:02:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-24 00:02:10,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-24 00:02:10,282 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 510 flow. Second operand 5 states and 131 transitions. [2024-11-24 00:02:10,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 144 transitions, 1012 flow [2024-11-24 00:02:10,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 144 transitions, 972 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-24 00:02:10,696 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 527 flow [2024-11-24 00:02:10,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-11-24 00:02:10,697 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2024-11-24 00:02:10,697 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 527 flow [2024-11-24 00:02:10,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:10,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:10,698 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:10,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:02:10,698 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:10,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1860483778, now seen corresponding path program 2 times [2024-11-24 00:02:10,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:10,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091780534] [2024-11-24 00:02:10,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:02:10,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:10,713 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:02:10,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091780534] [2024-11-24 00:02:10,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091780534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:10,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:02:10,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:02:10,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352802784] [2024-11-24 00:02:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:10,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:02:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:10,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:02:10,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:02:10,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:10,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 527 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:10,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:10,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:10,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:13,969 INFO L124 PetriNetUnfolderBase]: 34221/44469 cut-off events. [2024-11-24 00:02:13,969 INFO L125 PetriNetUnfolderBase]: For 86709/87013 co-relation queries the response was YES. [2024-11-24 00:02:14,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142454 conditions, 44469 events. 34221/44469 cut-off events. For 86709/87013 co-relation queries the response was YES. Maximal size of possible extension queue 1449. Compared 233290 event pairs, 13359 based on Foata normal form. 367/42637 useless extension candidates. Maximal degree in co-relation 119129. Up to 28367 conditions per place. [2024-11-24 00:02:14,299 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 253 selfloop transitions, 7 changer transitions 0/264 dead transitions. [2024-11-24 00:02:14,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 264 transitions, 2336 flow [2024-11-24 00:02:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:02:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:02:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-24 00:02:14,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-11-24 00:02:14,301 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 527 flow. Second operand 5 states and 128 transitions. [2024-11-24 00:02:14,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 264 transitions, 2336 flow [2024-11-24 00:02:14,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 264 transitions, 2236 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-24 00:02:14,648 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 547 flow [2024-11-24 00:02:14,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=547, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-11-24 00:02:14,649 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2024-11-24 00:02:14,649 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 547 flow [2024-11-24 00:02:14,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:14,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:14,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:14,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:02:14,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:14,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 126644926, now seen corresponding path program 4 times [2024-11-24 00:02:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:14,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670813298] [2024-11-24 00:02:14,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:02:14,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:14,669 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:02:14,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:14,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670813298] [2024-11-24 00:02:14,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670813298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:14,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:02:14,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:02:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312119307] [2024-11-24 00:02:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:14,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:02:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:14,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:02:14,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:02:14,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:14,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:14,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:14,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:14,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:18,290 INFO L124 PetriNetUnfolderBase]: 37457/48910 cut-off events. [2024-11-24 00:02:18,290 INFO L125 PetriNetUnfolderBase]: For 94136/96319 co-relation queries the response was YES. [2024-11-24 00:02:18,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167634 conditions, 48910 events. 37457/48910 cut-off events. For 94136/96319 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 263725 event pairs, 9049 based on Foata normal form. 1597/50481 useless extension candidates. Maximal degree in co-relation 149193. Up to 16805 conditions per place. [2024-11-24 00:02:18,563 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 184 selfloop transitions, 45 changer transitions 0/232 dead transitions. [2024-11-24 00:02:18,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 232 transitions, 1680 flow [2024-11-24 00:02:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:02:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:02:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-24 00:02:18,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6394557823129252 [2024-11-24 00:02:18,566 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 547 flow. Second operand 7 states and 188 transitions. [2024-11-24 00:02:18,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 232 transitions, 1680 flow [2024-11-24 00:02:19,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 232 transitions, 1680 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:02:19,013 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 844 flow [2024-11-24 00:02:19,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=844, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-11-24 00:02:19,014 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2024-11-24 00:02:19,014 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 844 flow [2024-11-24 00:02:19,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:19,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:19,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:19,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:02:19,015 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:19,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash -11795494, now seen corresponding path program 3 times [2024-11-24 00:02:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:19,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568766326] [2024-11-24 00:02:19,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:02:19,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:19,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:02:19,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568766326] [2024-11-24 00:02:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568766326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:19,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:02:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:02:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27559159] [2024-11-24 00:02:19,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:19,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:02:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:19,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:02:19,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:02:19,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:19,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 844 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:19,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:19,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:19,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:24,013 INFO L124 PetriNetUnfolderBase]: 43100/56382 cut-off events. [2024-11-24 00:02:24,013 INFO L125 PetriNetUnfolderBase]: For 149138/149742 co-relation queries the response was YES. [2024-11-24 00:02:24,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213256 conditions, 56382 events. 43100/56382 cut-off events. For 149138/149742 co-relation queries the response was YES. Maximal size of possible extension queue 1815. Compared 312593 event pairs, 14275 based on Foata normal form. 104/55022 useless extension candidates. Maximal degree in co-relation 187574. Up to 34274 conditions per place. [2024-11-24 00:02:24,419 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 163 selfloop transitions, 39 changer transitions 2/209 dead transitions. [2024-11-24 00:02:24,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 209 transitions, 1918 flow [2024-11-24 00:02:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:02:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:02:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-24 00:02:24,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-24 00:02:24,420 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 844 flow. Second operand 5 states and 132 transitions. [2024-11-24 00:02:24,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 209 transitions, 1918 flow [2024-11-24 00:02:25,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 209 transitions, 1841 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-11-24 00:02:25,760 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 1112 flow [2024-11-24 00:02:25,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1112, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2024-11-24 00:02:25,761 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-11-24 00:02:25,761 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 1112 flow [2024-11-24 00:02:25,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:25,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:25,762 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:25,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:02:25,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:25,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1075555226, now seen corresponding path program 5 times [2024-11-24 00:02:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640021323] [2024-11-24 00:02:25,763 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:02:25,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:25,778 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:02:25,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:25,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:25,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640021323] [2024-11-24 00:02:25,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640021323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:02:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111664874] [2024-11-24 00:02:25,847 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:02:25,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:02:25,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:02:25,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:02:25,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:02:25,925 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:02:25,925 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:25,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:02:25,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:02:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:25,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:02:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:26,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111664874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:02:26,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:02:26,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-24 00:02:26,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211266984] [2024-11-24 00:02:26,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:02:26,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:02:26,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:26,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:02:26,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:02:26,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-24 00:02:26,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 126 transitions, 1112 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:26,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:26,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-24 00:02:26,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:31,247 INFO L124 PetriNetUnfolderBase]: 45634/59700 cut-off events. [2024-11-24 00:02:31,248 INFO L125 PetriNetUnfolderBase]: For 182396/186256 co-relation queries the response was YES. [2024-11-24 00:02:31,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236810 conditions, 59700 events. 45634/59700 cut-off events. For 182396/186256 co-relation queries the response was YES. Maximal size of possible extension queue 2040. Compared 336177 event pairs, 6365 based on Foata normal form. 1993/61685 useless extension candidates. Maximal degree in co-relation 216063. Up to 14508 conditions per place. [2024-11-24 00:02:31,755 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 217 selfloop transitions, 68 changer transitions 0/288 dead transitions. [2024-11-24 00:02:31,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 288 transitions, 2545 flow [2024-11-24 00:02:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:02:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 00:02:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-11-24 00:02:31,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6101190476190477 [2024-11-24 00:02:31,757 INFO L175 Difference]: Start difference. First operand has 94 places, 126 transitions, 1112 flow. Second operand 8 states and 205 transitions. [2024-11-24 00:02:31,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 288 transitions, 2545 flow [2024-11-24 00:02:33,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 288 transitions, 2498 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-24 00:02:33,454 INFO L231 Difference]: Finished difference. Result has 104 places, 134 transitions, 1360 flow [2024-11-24 00:02:33,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1360, PETRI_PLACES=104, PETRI_TRANSITIONS=134} [2024-11-24 00:02:33,455 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 58 predicate places. [2024-11-24 00:02:33,455 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 134 transitions, 1360 flow [2024-11-24 00:02:33,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:33,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:33,455 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:33,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:02:33,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:02:33,656 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:33,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1513380156, now seen corresponding path program 4 times [2024-11-24 00:02:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:33,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589820167] [2024-11-24 00:02:33,657 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:02:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:33,667 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:02:33,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589820167] [2024-11-24 00:02:33,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589820167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:33,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:02:33,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:02:33,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233293409] [2024-11-24 00:02:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:33,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:02:33,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:33,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:02:33,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:02:33,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-24 00:02:33,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 134 transitions, 1360 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:33,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:33,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-24 00:02:33,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:02:40,563 INFO L124 PetriNetUnfolderBase]: 62421/80960 cut-off events. [2024-11-24 00:02:40,563 INFO L125 PetriNetUnfolderBase]: For 343572/343572 co-relation queries the response was YES. [2024-11-24 00:02:40,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339928 conditions, 80960 events. 62421/80960 cut-off events. For 343572/343572 co-relation queries the response was YES. Maximal size of possible extension queue 2338. Compared 443462 event pairs, 8038 based on Foata normal form. 984/79523 useless extension candidates. Maximal degree in co-relation 313044. Up to 29233 conditions per place. [2024-11-24 00:02:41,018 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 322 selfloop transitions, 67 changer transitions 2/392 dead transitions. [2024-11-24 00:02:41,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 392 transitions, 4543 flow [2024-11-24 00:02:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:02:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:02:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-11-24 00:02:41,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5884353741496599 [2024-11-24 00:02:41,020 INFO L175 Difference]: Start difference. First operand has 104 places, 134 transitions, 1360 flow. Second operand 7 states and 173 transitions. [2024-11-24 00:02:41,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 392 transitions, 4543 flow [2024-11-24 00:02:44,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 392 transitions, 4501 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-11-24 00:02:44,648 INFO L231 Difference]: Finished difference. Result has 114 places, 187 transitions, 2210 flow [2024-11-24 00:02:44,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2210, PETRI_PLACES=114, PETRI_TRANSITIONS=187} [2024-11-24 00:02:44,649 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-11-24 00:02:44,649 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 187 transitions, 2210 flow [2024-11-24 00:02:44,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:44,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:02:44,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:44,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:02:44,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-24 00:02:44,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 724822732, now seen corresponding path program 5 times [2024-11-24 00:02:44,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:44,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793657350] [2024-11-24 00:02:44,651 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:02:44,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:02:44,661 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:02:44,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:02:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793657350] [2024-11-24 00:02:44,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793657350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:02:44,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737716833] [2024-11-24 00:02:44,725 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:02:44,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:02:44,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:02:44,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:02:44,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a1896c-21ea-4013-b3df-709028350c0b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:02:44,799 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:02:44,799 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:02:44,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:02:44,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:02:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:44,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:02:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:02:44,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737716833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:02:44,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:02:44,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-24 00:02:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189273167] [2024-11-24 00:02:44,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:02:44,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:02:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:44,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:02:44,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:02:44,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-24 00:02:44,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 187 transitions, 2210 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:02:44,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:02:44,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-24 00:02:44,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand