./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU --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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:16:37,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:16:37,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:16:37,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:16:37,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:16:37,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:16:37,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:16:37,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:16:37,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:16:37,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:16:37,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:16:37,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:16:37,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:16:37,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:16:37,858 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:16:37,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:16:37,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:16:37,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:16:37,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:16:37,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:16:37,860 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:16:37,861 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:16:37,861 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:16:37,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:16:37,862 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:16:37,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:16:37,863 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:16:37,863 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:16:37,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:16:37,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:16:37,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:16:37,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:16:37,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:16:37,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:37,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:16:37,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:16:37,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:16:37,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:16:37,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:16:37,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:16:37,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:16:37,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:16:37,868 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-10-31 22:16:38,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:16:38,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:16:38,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:16:38,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:16:38,286 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:16:38,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c Unable to find full path for "g++" [2024-10-31 22:16:40,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:16:40,554 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:16:40,555 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-10-31 22:16:40,568 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/data/be60fba9c/2f5366419e834091a73fcf20c721c01a/FLAG6f9cd0286 [2024-10-31 22:16:40,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/data/be60fba9c/2f5366419e834091a73fcf20c721c01a [2024-10-31 22:16:40,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:16:40,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:16:40,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:40,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:16:40,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:16:40,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:40" (1/1) ... [2024-10-31 22:16:40,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2932ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:40, skipping insertion in model container [2024-10-31 22:16:40,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:40" (1/1) ... [2024-10-31 22:16:40,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:16:41,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:41,251 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:16:41,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:41,300 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:16:41,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41 WrapperNode [2024-10-31 22:16:41,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:41,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:41,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:16:41,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:16:41,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,339 INFO L138 Inliner]: procedures = 22, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2024-10-31 22:16:41,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:41,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:16:41,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:16:41,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:16:41,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,372 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]. [2024-10-31 22:16:41,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,378 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:16:41,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:16:41,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:16:41,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:16:41,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (1/1) ... [2024-10-31 22:16:41,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:41,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:41,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:16:41,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:16:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:16:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:16:41,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:16:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:16:41,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:16:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:16:41,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:16:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-31 22:16:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-31 22:16:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:16:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:16:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:16:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:16:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:16:41,493 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:16:41,671 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:16:41,674 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:16:41,989 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:16:41,990 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:16:42,164 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:16:42,165 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:16:42,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:42 BoogieIcfgContainer [2024-10-31 22:16:42,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:16:42,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:16:42,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:16:42,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:16:42,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:16:40" (1/3) ... [2024-10-31 22:16:42,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400bcd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:42, skipping insertion in model container [2024-10-31 22:16:42,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:41" (2/3) ... [2024-10-31 22:16:42,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400bcd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:42, skipping insertion in model container [2024-10-31 22:16:42,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:42" (3/3) ... [2024-10-31 22:16:42,183 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-10-31 22:16:42,206 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:16:42,207 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:16:42,207 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:16:42,330 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 22:16:42,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-10-31 22:16:42,409 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-31 22:16:42,409 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:16:42,412 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 46 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. [2024-10-31 22:16:42,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-10-31 22:16:42,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-10-31 22:16:42,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:16:42,442 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;@3ba4c13f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:16:42,442 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-31 22:16:42,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:16:42,462 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-31 22:16:42,463 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:16:42,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:42,464 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:42,465 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)] === [2024-10-31 22:16:42,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112110, now seen corresponding path program 1 times [2024-10-31 22:16:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:42,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334335774] [2024-10-31 22:16:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:42,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334335774] [2024-10-31 22:16:43,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334335774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:43,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:16:43,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777620632] [2024-10-31 22:16:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:43,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:43,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:43,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:43,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-31 22:16:43,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:43,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:43,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-31 22:16:43,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:43,885 INFO L124 PetriNetUnfolderBase]: 3042/4219 cut-off events. [2024-10-31 22:16:43,885 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-10-31 22:16:43,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 4219 events. 3042/4219 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18643 event pairs, 763 based on Foata normal form. 153/4362 useless extension candidates. Maximal degree in co-relation 7613. Up to 3203 conditions per place. [2024-10-31 22:16:43,930 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-10-31 22:16:43,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-10-31 22:16:43,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-31 22:16:43,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-10-31 22:16:43,989 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2024-10-31 22:16:43,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-10-31 22:16:44,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-31 22:16:44,005 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-10-31 22:16:44,010 INFO L260 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} [2024-10-31 22:16:44,015 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-10-31 22:16:44,016 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-10-31 22:16:44,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:44,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:44,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:44,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:16:44,018 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)] === [2024-10-31 22:16:44,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -56319925, now seen corresponding path program 1 times [2024-10-31 22:16:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026721512] [2024-10-31 22:16:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:44,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:44,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:44,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026721512] [2024-10-31 22:16:44,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026721512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:44,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:44,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:44,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813665944] [2024-10-31 22:16:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:44,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:44,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:44,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-31 22:16:44,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:44,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:44,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-31 22:16:44,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:46,134 INFO L124 PetriNetUnfolderBase]: 11992/15976 cut-off events. [2024-10-31 22:16:46,135 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-10-31 22:16:46,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33896 conditions, 15976 events. 11992/15976 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 80196 event pairs, 4358 based on Foata normal form. 0/12611 useless extension candidates. Maximal degree in co-relation 9557. Up to 8661 conditions per place. [2024-10-31 22:16:46,261 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-10-31 22:16:46,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-10-31 22:16:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-31 22:16:46,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-10-31 22:16:46,266 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 134 transitions. [2024-10-31 22:16:46,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-10-31 22:16:46,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:46,273 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-10-31 22:16:46,274 INFO L260 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=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-10-31 22:16:46,275 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-10-31 22:16:46,276 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-10-31 22:16:46,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:46,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:46,276 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:46,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:16:46,277 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)] === [2024-10-31 22:16:46,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1593058387, now seen corresponding path program 2 times [2024-10-31 22:16:46,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:46,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565894492] [2024-10-31 22:16:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:46,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:46,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565894492] [2024-10-31 22:16:46,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565894492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:46,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:16:46,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884420331] [2024-10-31 22:16:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:46,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:46,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:46,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-31 22:16:46,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:46,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:46,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-31 22:16:46,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:49,117 INFO L124 PetriNetUnfolderBase]: 17012/23075 cut-off events. [2024-10-31 22:16:49,117 INFO L125 PetriNetUnfolderBase]: For 10222/10246 co-relation queries the response was YES. [2024-10-31 22:16:49,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59304 conditions, 23075 events. 17012/23075 cut-off events. For 10222/10246 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 128540 event pairs, 1715 based on Foata normal form. 1551/24214 useless extension candidates. Maximal degree in co-relation 34291. Up to 6690 conditions per place. [2024-10-31 22:16:49,305 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 119 selfloop transitions, 23 changer transitions 2/149 dead transitions. [2024-10-31 22:16:49,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 149 transitions, 759 flow [2024-10-31 22:16:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:16:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:16:49,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-10-31 22:16:49,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-10-31 22:16:49,309 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 7 states and 195 transitions. [2024-10-31 22:16:49,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 149 transitions, 759 flow [2024-10-31 22:16:49,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 149 transitions, 759 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:16:49,337 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 355 flow [2024-10-31 22:16:49,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2024-10-31 22:16:49,340 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-31 22:16:49,340 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 355 flow [2024-10-31 22:16:49,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:49,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:49,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:49,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:16:49,343 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)] === [2024-10-31 22:16:49,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1974757833, now seen corresponding path program 3 times [2024-10-31 22:16:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:49,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730794963] [2024-10-31 22:16:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:49,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730794963] [2024-10-31 22:16:49,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730794963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:49,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:49,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:49,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480053325] [2024-10-31 22:16:49,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:49,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:49,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:49,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:49,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-31 22:16:49,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:49,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:49,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-31 22:16:49,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:52,767 INFO L124 PetriNetUnfolderBase]: 22353/30245 cut-off events. [2024-10-31 22:16:52,767 INFO L125 PetriNetUnfolderBase]: For 50715/50791 co-relation queries the response was YES. [2024-10-31 22:16:52,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97912 conditions, 30245 events. 22353/30245 cut-off events. For 50715/50791 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 170809 event pairs, 6669 based on Foata normal form. 556/30192 useless extension candidates. Maximal degree in co-relation 54821. Up to 15431 conditions per place. [2024-10-31 22:16:53,048 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 103 selfloop transitions, 12 changer transitions 9/129 dead transitions. [2024-10-31 22:16:53,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 129 transitions, 891 flow [2024-10-31 22:16:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-31 22:16:53,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-10-31 22:16:53,051 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 355 flow. Second operand 5 states and 134 transitions. [2024-10-31 22:16:53,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 129 transitions, 891 flow [2024-10-31 22:16:53,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 129 transitions, 879 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-31 22:16:53,979 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 440 flow [2024-10-31 22:16:53,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-31 22:16:53,981 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-10-31 22:16:53,981 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 440 flow [2024-10-31 22:16:53,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:53,982 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:53,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:16:53,983 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)] === [2024-10-31 22:16:53,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash -792809255, now seen corresponding path program 1 times [2024-10-31 22:16:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339754751] [2024-10-31 22:16:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:54,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:54,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339754751] [2024-10-31 22:16:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339754751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:54,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:54,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:54,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084352924] [2024-10-31 22:16:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:54,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:54,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:54,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-31 22:16:54,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:54,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:54,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-31 22:16:54,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:57,704 INFO L124 PetriNetUnfolderBase]: 22352/30080 cut-off events. [2024-10-31 22:16:57,705 INFO L125 PetriNetUnfolderBase]: For 91100/91122 co-relation queries the response was YES. [2024-10-31 22:16:57,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110237 conditions, 30080 events. 22352/30080 cut-off events. For 91100/91122 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 166594 event pairs, 7792 based on Foata normal form. 114/29406 useless extension candidates. Maximal degree in co-relation 49240. Up to 15880 conditions per place. [2024-10-31 22:16:57,921 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 71 selfloop transitions, 9 changer transitions 29/114 dead transitions. [2024-10-31 22:16:57,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 876 flow [2024-10-31 22:16:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-31 22:16:57,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-10-31 22:16:57,924 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 440 flow. Second operand 5 states and 129 transitions. [2024-10-31 22:16:57,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 876 flow [2024-10-31 22:16:58,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 812 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:58,319 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 413 flow [2024-10-31 22:16:58,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-10-31 22:16:58,320 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-10-31 22:16:58,321 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 413 flow [2024-10-31 22:16:58,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:58,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:58,321 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:58,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:16:58,322 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)] === [2024-10-31 22:16:58,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash 466724827, now seen corresponding path program 4 times [2024-10-31 22:16:58,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:58,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133695539] [2024-10-31 22:16:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133695539] [2024-10-31 22:16:58,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133695539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:58,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:58,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:16:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780070086] [2024-10-31 22:16:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:58,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:58,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:58,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:58,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-31 22:16:58,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:58,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:58,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-31 22:16:58,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:01,514 INFO L124 PetriNetUnfolderBase]: 21318/28640 cut-off events. [2024-10-31 22:17:01,514 INFO L125 PetriNetUnfolderBase]: For 73864/73934 co-relation queries the response was YES. [2024-10-31 22:17:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100969 conditions, 28640 events. 21318/28640 cut-off events. For 73864/73934 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 156193 event pairs, 6083 based on Foata normal form. 562/28553 useless extension candidates. Maximal degree in co-relation 65055. Up to 10952 conditions per place. [2024-10-31 22:17:01,719 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 105 selfloop transitions, 35 changer transitions 3/148 dead transitions. [2024-10-31 22:17:01,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 1127 flow [2024-10-31 22:17:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-10-31 22:17:01,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-31 22:17:01,721 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 413 flow. Second operand 6 states and 161 transitions. [2024-10-31 22:17:01,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 1127 flow [2024-10-31 22:17:02,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 148 transitions, 1071 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-10-31 22:17:02,205 INFO L231 Difference]: Finished difference. Result has 71 places, 80 transitions, 689 flow [2024-10-31 22:17:02,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=689, PETRI_PLACES=71, PETRI_TRANSITIONS=80} [2024-10-31 22:17:02,206 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-10-31 22:17:02,206 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 80 transitions, 689 flow [2024-10-31 22:17:02,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:02,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:02,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:02,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:17:02,207 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)] === [2024-10-31 22:17:02,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1424088803, now seen corresponding path program 1 times [2024-10-31 22:17:02,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:02,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59289445] [2024-10-31 22:17:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:02,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:02,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:02,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59289445] [2024-10-31 22:17:02,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59289445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:02,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836072904] [2024-10-31 22:17:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:02,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:02,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:02,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:02,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:17:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:02,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:17:02,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:02,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836072904] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:02,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:17:02,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-10-31 22:17:02,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340878711] [2024-10-31 22:17:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:02,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:02,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:02,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-31 22:17:02,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 80 transitions, 689 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:02,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:02,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-31 22:17:02,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:06,278 INFO L124 PetriNetUnfolderBase]: 23390/31593 cut-off events. [2024-10-31 22:17:06,278 INFO L125 PetriNetUnfolderBase]: For 117323/117375 co-relation queries the response was YES. [2024-10-31 22:17:06,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126923 conditions, 31593 events. 23390/31593 cut-off events. For 117323/117375 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 178038 event pairs, 3014 based on Foata normal form. 915/31990 useless extension candidates. Maximal degree in co-relation 84291. Up to 15302 conditions per place. [2024-10-31 22:17:06,466 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 108 selfloop transitions, 21 changer transitions 0/134 dead transitions. [2024-10-31 22:17:06,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 134 transitions, 1364 flow [2024-10-31 22:17:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:17:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-31 22:17:06,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-10-31 22:17:06,468 INFO L175 Difference]: Start difference. First operand has 71 places, 80 transitions, 689 flow. Second operand 4 states and 102 transitions. [2024-10-31 22:17:06,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 134 transitions, 1364 flow [2024-10-31 22:17:07,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 134 transitions, 1268 flow, removed 39 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:07,177 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 737 flow [2024-10-31 22:17:07,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=737, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2024-10-31 22:17:07,178 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-10-31 22:17:07,179 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 737 flow [2024-10-31 22:17:07,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:07,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:07,179 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:07,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:07,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ea002b-97a9-4159-a9ba-9468b69fdd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:17:07,380 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)] === [2024-10-31 22:17:07,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1954935991, now seen corresponding path program 2 times [2024-10-31 22:17:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:07,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007216587] [2024-10-31 22:17:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:07,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:17:07,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:07,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007216587] [2024-10-31 22:17:07,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007216587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:07,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:07,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:07,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980458121] [2024-10-31 22:17:07,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:07,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:17:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:17:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:07,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-31 22:17:07,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 84 transitions, 737 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:07,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:07,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-31 22:17:07,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand