./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/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_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/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_85a057fe-e363-486b-98f5-aa83174183e4/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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:16:32,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:16:32,283 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:16:32,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:16:32,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:16:32,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:16:32,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:16:32,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:16:32,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:16:32,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:16:32,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:16:32,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:16:32,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:16:32,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:16:32,344 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:16:32,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:16:32,345 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:16:32,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:16:32,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:16:32,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:16:32,347 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:16:32,348 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:16:32,348 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:16:32,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:16:32,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:16:32,353 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:16:32,353 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:16:32,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:16:32,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:16:32,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:16:32,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:16:32,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:16:32,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:16:32,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:32,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:16:32,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:16:32,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:16:32,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:16:32,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:16:32,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:16:32,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:16:32,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:16:32,374 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_85a057fe-e363-486b-98f5-aa83174183e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-10-31 22:16:32,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:16:32,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:16:32,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:16:32,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:16:32,710 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:16:32,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread/stack_longer-1.i Unable to find full path for "g++" [2024-10-31 22:16:34,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:16:35,092 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:16:35,093 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-31 22:16:35,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/data/fd1c17d13/3e937d76cfe54879b05c4092f54b6e8d/FLAGf247cf468 [2024-10-31 22:16:35,135 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/data/fd1c17d13/3e937d76cfe54879b05c4092f54b6e8d [2024-10-31 22:16:35,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:16:35,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:16:35,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:35,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:16:35,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:16:35,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:35,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1531fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35, skipping insertion in model container [2024-10-31 22:16:35,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:35,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:16:35,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:35,809 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:16:35,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:35,977 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:16:35,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35 WrapperNode [2024-10-31 22:16:35,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:35,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:35,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:16:35,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:16:35,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,087 INFO L138 Inliner]: procedures = 277, calls = 432, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 556 [2024-10-31 22:16:36,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:36,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:16:36,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:16:36,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:16:36,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,141 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-10-31 22:16:36,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:16:36,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:16:36,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:16:36,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:16:36,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (1/1) ... [2024-10-31 22:16:36,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:36,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:16:36,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:16:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-31 22:16:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-31 22:16:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-31 22:16:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-31 22:16:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:16:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:16:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:16:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:16:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:16:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:16:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:16:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:16:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:16:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:16:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:16:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:16:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:16:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:16:36,364 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 22:16:36,554 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:16:36,557 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:16:37,522 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:16:37,523 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:16:44,056 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:16:44,056 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:16:44,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:44 BoogieIcfgContainer [2024-10-31 22:16:44,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:16:44,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:16:44,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:16:44,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:16:44,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:16:35" (1/3) ... [2024-10-31 22:16:44,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dbbccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:44, skipping insertion in model container [2024-10-31 22:16:44,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:35" (2/3) ... [2024-10-31 22:16:44,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dbbccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:44, skipping insertion in model container [2024-10-31 22:16:44,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:44" (3/3) ... [2024-10-31 22:16:44,071 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-10-31 22:16:44,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:16:44,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-31 22:16:44,093 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:16:44,166 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:16:44,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 55 transitions, 124 flow [2024-10-31 22:16:44,271 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2024-10-31 22:16:44,271 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:16:44,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 9/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 144 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2024-10-31 22:16:44,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 55 transitions, 124 flow [2024-10-31 22:16:44,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 52 transitions, 116 flow [2024-10-31 22:16:44,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:16:44,312 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;@43baffdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:16:44,312 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-31 22:16:44,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:16:44,358 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-31 22:16:44,359 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:16:44,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:44,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:44,360 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:44,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1377655452, now seen corresponding path program 1 times [2024-10-31 22:16:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787759796] [2024-10-31 22:16:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:45,147 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 22:16:45,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:45,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787759796] [2024-10-31 22:16:45,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787759796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:45,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:45,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:16:45,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094631708] [2024-10-31 22:16:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:45,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:45,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:45,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-31 22:16:45,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2024-10-31 22:16:45,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:45,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-31 22:16:45,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:45,624 INFO L124 PetriNetUnfolderBase]: 454/883 cut-off events. [2024-10-31 22:16:45,624 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-31 22:16:45,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 883 events. 454/883 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4518 event pairs, 242 based on Foata normal form. 90/851 useless extension candidates. Maximal degree in co-relation 1570. Up to 512 conditions per place. [2024-10-31 22:16:45,635 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 43 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-10-31 22:16:45,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 227 flow [2024-10-31 22:16:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:16:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:16:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-31 22:16:45,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-10-31 22:16:45,653 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 116 flow. Second operand 4 states and 117 transitions. [2024-10-31 22:16:45,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 227 flow [2024-10-31 22:16:45,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 217 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:45,662 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 100 flow [2024-10-31 22:16:45,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-10-31 22:16:45,671 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2024-10-31 22:16:45,672 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 100 flow [2024-10-31 22:16:45,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2024-10-31 22:16:45,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:45,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:45,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:16:45,675 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:45,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1377655453, now seen corresponding path program 1 times [2024-10-31 22:16:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:45,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125361865] [2024-10-31 22:16:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:46,487 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 22:16:46,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:46,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125361865] [2024-10-31 22:16:46,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125361865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:46,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:46,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216300689] [2024-10-31 22:16:46,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:46,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:46,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:46,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:46,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-31 22:16:46,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:46,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:46,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-31 22:16:46,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:47,018 INFO L124 PetriNetUnfolderBase]: 750/1388 cut-off events. [2024-10-31 22:16:47,019 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-31 22:16:47,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1388 events. 750/1388 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7425 event pairs, 125 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 807. Up to 848 conditions per place. [2024-10-31 22:16:47,028 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 87 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-10-31 22:16:47,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 423 flow [2024-10-31 22:16:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:16:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:16:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-10-31 22:16:47,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-10-31 22:16:47,031 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 100 flow. Second operand 6 states and 194 transitions. [2024-10-31 22:16:47,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 423 flow [2024-10-31 22:16:47,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 108 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:16:47,035 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2024-10-31 22:16:47,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-10-31 22:16:47,036 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-10-31 22:16:47,036 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2024-10-31 22:16:47,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:47,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:47,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:47,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:16:47,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:47,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash -863159117, now seen corresponding path program 1 times [2024-10-31 22:16:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:47,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436899868] [2024-10-31 22:16:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:47,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:47,253 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 22:16:47,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436899868] [2024-10-31 22:16:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436899868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:47,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826219300] [2024-10-31 22:16:47,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:47,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:47,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:47,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:47,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:47,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-31 22:16:47,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:47,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:47,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-31 22:16:47,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:47,578 INFO L124 PetriNetUnfolderBase]: 663/1274 cut-off events. [2024-10-31 22:16:47,579 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-10-31 22:16:47,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1274 events. 663/1274 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6563 event pairs, 176 based on Foata normal form. 34/1197 useless extension candidates. Maximal degree in co-relation 2591. Up to 721 conditions per place. [2024-10-31 22:16:47,588 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 67 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-10-31 22:16:47,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 376 flow [2024-10-31 22:16:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-10-31 22:16:47,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-10-31 22:16:47,592 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 5 states and 160 transitions. [2024-10-31 22:16:47,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 376 flow [2024-10-31 22:16:47,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:47,597 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 161 flow [2024-10-31 22:16:47,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-31 22:16:47,598 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2024-10-31 22:16:47,598 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 161 flow [2024-10-31 22:16:47,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:47,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:47,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:47,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:16:47,600 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:47,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -86512350, now seen corresponding path program 1 times [2024-10-31 22:16:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:47,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55144921] [2024-10-31 22:16:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:47,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:47,758 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 22:16:47,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:47,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55144921] [2024-10-31 22:16:47,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55144921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:47,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:47,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:47,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641347498] [2024-10-31 22:16:47,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:47,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:47,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:47,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-31 22:16:47,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 22:16:47,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:47,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-31 22:16:47,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:48,166 INFO L124 PetriNetUnfolderBase]: 971/1835 cut-off events. [2024-10-31 22:16:48,167 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-10-31 22:16:48,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 1835 events. 971/1835 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9682 event pairs, 464 based on Foata normal form. 0/1713 useless extension candidates. Maximal degree in co-relation 3355. Up to 1051 conditions per place. [2024-10-31 22:16:48,184 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 73 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-10-31 22:16:48,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 429 flow [2024-10-31 22:16:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:16:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:16:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-31 22:16:48,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6318181818181818 [2024-10-31 22:16:48,189 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 161 flow. Second operand 4 states and 139 transitions. [2024-10-31 22:16:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 429 flow [2024-10-31 22:16:48,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:16:48,197 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 197 flow [2024-10-31 22:16:48,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-31 22:16:48,199 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-10-31 22:16:48,200 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 197 flow [2024-10-31 22:16:48,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 22:16:48,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:48,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:48,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:16:48,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:48,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash -426991003, now seen corresponding path program 1 times [2024-10-31 22:16:48,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:48,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695025158] [2024-10-31 22:16:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:48,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:48,352 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 22:16:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:48,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695025158] [2024-10-31 22:16:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695025158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630123026] [2024-10-31 22:16:48,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:48,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:48,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:48,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-31 22:16:48,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 22:16:48,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:48,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-31 22:16:48,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:48,803 INFO L124 PetriNetUnfolderBase]: 1096/2029 cut-off events. [2024-10-31 22:16:48,804 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-10-31 22:16:48,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 2029 events. 1096/2029 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10881 event pairs, 514 based on Foata normal form. 22/1932 useless extension candidates. Maximal degree in co-relation 4011. Up to 1284 conditions per place. [2024-10-31 22:16:48,820 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 62 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-10-31 22:16:48,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 397 flow [2024-10-31 22:16:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-31 22:16:48,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-10-31 22:16:48,821 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 197 flow. Second operand 3 states and 106 transitions. [2024-10-31 22:16:48,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 397 flow [2024-10-31 22:16:48,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 391 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:48,830 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 203 flow [2024-10-31 22:16:48,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-10-31 22:16:48,831 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-10-31 22:16:48,831 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 203 flow [2024-10-31 22:16:48,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 22:16:48,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:48,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:48,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:16:48,832 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:48,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash -401786244, now seen corresponding path program 1 times [2024-10-31 22:16:48,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25343417] [2024-10-31 22:16:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:48,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:49,099 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 22:16:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25343417] [2024-10-31 22:16:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25343417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:49,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:49,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:16:49,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539817334] [2024-10-31 22:16:49,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:49,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:49,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-31 22:16:49,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:49,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:49,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-31 22:16:49,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:49,526 INFO L124 PetriNetUnfolderBase]: 1006/1856 cut-off events. [2024-10-31 22:16:49,526 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-10-31 22:16:49,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4370 conditions, 1856 events. 1006/1856 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9913 event pairs, 361 based on Foata normal form. 14/1750 useless extension candidates. Maximal degree in co-relation 3871. Up to 1410 conditions per place. [2024-10-31 22:16:49,540 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 49 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-31 22:16:49,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 313 flow [2024-10-31 22:16:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-31 22:16:49,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-10-31 22:16:49,542 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 203 flow. Second operand 3 states and 96 transitions. [2024-10-31 22:16:49,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 313 flow [2024-10-31 22:16:49,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 303 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:49,548 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 180 flow [2024-10-31 22:16:49,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-31 22:16:49,551 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-10-31 22:16:49,552 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 180 flow [2024-10-31 22:16:49,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:49,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:49,553 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:49,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:16:49,553 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:49,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1690161877, now seen corresponding path program 1 times [2024-10-31 22:16:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:49,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91407909] [2024-10-31 22:16:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:50,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91407909] [2024-10-31 22:16:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91407909] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:16:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903534212] [2024-10-31 22:16:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:50,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:50,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:16:50,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:16:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:50,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-31 22:16:50,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:16:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:50,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:16:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903534212] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:16:50,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:16:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-10-31 22:16:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479585225] [2024-10-31 22:16:50,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:16:50,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:16:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:16:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:16:51,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-31 22:16:51,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 180 flow. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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 22:16:51,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:51,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-31 22:16:51,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:54,055 INFO L124 PetriNetUnfolderBase]: 4128/7722 cut-off events. [2024-10-31 22:16:54,055 INFO L125 PetriNetUnfolderBase]: For 2485/2485 co-relation queries the response was YES. [2024-10-31 22:16:54,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17864 conditions, 7722 events. 4128/7722 cut-off events. For 2485/2485 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 50393 event pairs, 309 based on Foata normal form. 192/7404 useless extension candidates. Maximal degree in co-relation 7413. Up to 1423 conditions per place. [2024-10-31 22:16:54,135 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 327 selfloop transitions, 45 changer transitions 0/386 dead transitions. [2024-10-31 22:16:54,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 386 transitions, 1892 flow [2024-10-31 22:16:54,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-31 22:16:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-31 22:16:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 685 transitions. [2024-10-31 22:16:54,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2024-10-31 22:16:54,139 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 180 flow. Second operand 20 states and 685 transitions. [2024-10-31 22:16:54,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 386 transitions, 1892 flow [2024-10-31 22:16:54,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 386 transitions, 1850 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:54,159 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 592 flow [2024-10-31 22:16:54,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-10-31 22:16:54,160 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-10-31 22:16:54,161 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 592 flow [2024-10-31 22:16:54,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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 22:16:54,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:54,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:54,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:16:54,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a057fe-e363-486b-98f5-aa83174183e4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:54,363 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:54,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1045251999, now seen corresponding path program 1 times [2024-10-31 22:16:54,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:54,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449292046] [2024-10-31 22:16:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:54,652 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 22:16:54,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:54,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449292046] [2024-10-31 22:16:54,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449292046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:54,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:54,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469674695] [2024-10-31 22:16:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:54,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:54,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-31 22:16:54,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 22:16:54,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:54,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-31 22:16:54,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:55,201 INFO L124 PetriNetUnfolderBase]: 1833/3828 cut-off events. [2024-10-31 22:16:55,201 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-10-31 22:16:55,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9379 conditions, 3828 events. 1833/3828 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 22283 event pairs, 372 based on Foata normal form. 234/3906 useless extension candidates. Maximal degree in co-relation 9177. Up to 2311 conditions per place. [2024-10-31 22:16:55,230 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 70 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-10-31 22:16:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 609 flow [2024-10-31 22:16:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-31 22:16:55,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-10-31 22:16:55,231 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 592 flow. Second operand 3 states and 94 transitions. [2024-10-31 22:16:55,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 609 flow [2024-10-31 22:16:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 561 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-10-31 22:16:55,252 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 389 flow [2024-10-31 22:16:55,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-10-31 22:16:55,253 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2024-10-31 22:16:55,253 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 389 flow [2024-10-31 22:16:55,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 22:16:55,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:55,254 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] [2024-10-31 22:16:55,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:16:55,254 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:55,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1955896385, now seen corresponding path program 1 times [2024-10-31 22:16:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:55,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184686207] [2024-10-31 22:16:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:55,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:55,474 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 22:16:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184686207] [2024-10-31 22:16:55,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184686207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:55,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:55,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:55,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87859213] [2024-10-31 22:16:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:55,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:55,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:55,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:55,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-31 22:16:55,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 22:16:55,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:55,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-31 22:16:55,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:56,136 INFO L124 PetriNetUnfolderBase]: 1838/3730 cut-off events. [2024-10-31 22:16:56,136 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-10-31 22:16:56,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9363 conditions, 3730 events. 1838/3730 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 21409 event pairs, 1002 based on Foata normal form. 0/3605 useless extension candidates. Maximal degree in co-relation 7894. Up to 2166 conditions per place. [2024-10-31 22:16:56,171 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 56 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-10-31 22:16:56,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 565 flow [2024-10-31 22:16:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-31 22:16:56,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44363636363636366 [2024-10-31 22:16:56,173 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 389 flow. Second operand 5 states and 122 transitions. [2024-10-31 22:16:56,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 565 flow [2024-10-31 22:16:56,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:56,185 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 419 flow [2024-10-31 22:16:56,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-10-31 22:16:56,187 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2024-10-31 22:16:56,187 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 419 flow [2024-10-31 22:16:56,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 22:16:56,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:56,187 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] [2024-10-31 22:16:56,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:16:56,188 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:56,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1627591134, now seen corresponding path program 1 times [2024-10-31 22:16:56,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:56,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18631073] [2024-10-31 22:16:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:56,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:56,792 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 22:16:56,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18631073] [2024-10-31 22:16:56,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18631073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:56,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:56,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:56,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134120408] [2024-10-31 22:16:56,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:56,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:56,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:56,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:56,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-31 22:16:56,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 22:16:56,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:56,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-31 22:16:56,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:57,558 INFO L124 PetriNetUnfolderBase]: 1961/3997 cut-off events. [2024-10-31 22:16:57,558 INFO L125 PetriNetUnfolderBase]: For 2197/2197 co-relation queries the response was YES. [2024-10-31 22:16:57,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 3997 events. 1961/3997 cut-off events. For 2197/2197 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23133 event pairs, 481 based on Foata normal form. 0/3837 useless extension candidates. Maximal degree in co-relation 8547. Up to 2936 conditions per place. [2024-10-31 22:16:57,595 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 100 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2024-10-31 22:16:57,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 120 transitions, 781 flow [2024-10-31 22:16:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:16:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:16:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-10-31 22:16:57,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-10-31 22:16:57,597 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 419 flow. Second operand 6 states and 175 transitions. [2024-10-31 22:16:57,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 120 transitions, 781 flow [2024-10-31 22:16:57,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 737 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:57,613 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 438 flow [2024-10-31 22:16:57,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-10-31 22:16:57,613 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2024-10-31 22:16:57,614 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 438 flow [2024-10-31 22:16:57,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 22:16:57,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:57,614 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 22:16:57,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:16:57,614 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:57,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1398831207, now seen corresponding path program 1 times [2024-10-31 22:16:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440875031] [2024-10-31 22:16:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:57,723 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 22:16:57,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440875031] [2024-10-31 22:16:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440875031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:57,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:57,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:57,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568343537] [2024-10-31 22:16:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:57,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:57,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:57,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-31 22:16:57,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 22:16:57,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:57,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-31 22:16:57,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:58,822 INFO L124 PetriNetUnfolderBase]: 2879/6069 cut-off events. [2024-10-31 22:16:58,822 INFO L125 PetriNetUnfolderBase]: For 3032/3032 co-relation queries the response was YES. [2024-10-31 22:16:58,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14999 conditions, 6069 events. 2879/6069 cut-off events. For 3032/3032 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40452 event pairs, 1373 based on Foata normal form. 137/5984 useless extension candidates. Maximal degree in co-relation 12972. Up to 3403 conditions per place. [2024-10-31 22:16:58,874 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 124 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-10-31 22:16:58,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 1046 flow [2024-10-31 22:16:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-10-31 22:16:58,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-10-31 22:16:58,877 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 438 flow. Second operand 3 states and 107 transitions. [2024-10-31 22:16:58,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 1046 flow [2024-10-31 22:16:58,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 140 transitions, 1038 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:58,899 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 445 flow [2024-10-31 22:16:58,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-10-31 22:16:58,900 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-10-31 22:16:58,901 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 445 flow [2024-10-31 22:16:58,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 22:16:58,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:58,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:58,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:16:58,903 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:16:58,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1278407692, now seen corresponding path program 1 times [2024-10-31 22:16:58,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:58,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684954473] [2024-10-31 22:16:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:58,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:59,096 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 22:16:59,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:59,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684954473] [2024-10-31 22:16:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684954473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:59,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:59,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:59,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540233375] [2024-10-31 22:16:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:59,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:59,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:59,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-31 22:16:59,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 22:16:59,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:59,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-31 22:16:59,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:00,172 INFO L124 PetriNetUnfolderBase]: 3194/6487 cut-off events. [2024-10-31 22:17:00,172 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2024-10-31 22:17:00,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17920 conditions, 6487 events. 3194/6487 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 42407 event pairs, 475 based on Foata normal form. 105/6410 useless extension candidates. Maximal degree in co-relation 14840. Up to 2632 conditions per place. [2024-10-31 22:17:00,228 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 109 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2024-10-31 22:17:00,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 930 flow [2024-10-31 22:17:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:17:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:17:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-10-31 22:17:00,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5527272727272727 [2024-10-31 22:17:00,230 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 445 flow. Second operand 5 states and 152 transitions. [2024-10-31 22:17:00,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 930 flow [2024-10-31 22:17:00,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 923 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:00,257 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 519 flow [2024-10-31 22:17:00,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-10-31 22:17:00,260 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-10-31 22:17:00,262 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 519 flow [2024-10-31 22:17:00,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 22:17:00,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:00,262 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] [2024-10-31 22:17:00,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:17:00,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-31 22:17:00,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash -920671726, now seen corresponding path program 1 times [2024-10-31 22:17:00,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:00,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352396615] [2024-10-31 22:17:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat