./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/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_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/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_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/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 f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:08:38,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:08:38,150 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:08:38,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:08:38,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:08:38,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:08:38,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:08:38,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:08:38,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:08:38,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:08:38,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:08:38,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:08:38,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:08:38,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:08:38,211 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:08:38,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:08:38,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:08:38,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:08:38,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:08:38,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:08:38,213 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:08:38,218 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:08:38,219 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:08:38,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:08:38,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:08:38,220 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:08:38,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:08:38,220 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:08:38,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:08:38,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:08:38,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:08:38,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:08:38,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:08:38,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:38,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:08:38,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:08:38,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:08:38,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:08:38,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:08:38,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:08:38,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:08:38,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:08:38,228 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_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2024-10-31 22:08:38,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:08:38,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:08:38,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:08:38,679 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:08:38,680 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:08:38,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/clever.wvr.c Unable to find full path for "g++" [2024-10-31 22:08:40,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:08:41,279 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:08:41,280 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/sv-benchmarks/c/weaver/clever.wvr.c [2024-10-31 22:08:41,292 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/data/5ca0d3d0f/5aeb59f1189c43d1b9dd07260ebf549b/FLAGedd72bef7 [2024-10-31 22:08:41,319 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/data/5ca0d3d0f/5aeb59f1189c43d1b9dd07260ebf549b [2024-10-31 22:08:41,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:08:41,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:08:41,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:41,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:08:41,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:08:41,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41309a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41, skipping insertion in model container [2024-10-31 22:08:41,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:08:41,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:41,674 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:08:41,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:41,727 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:08:41,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41 WrapperNode [2024-10-31 22:08:41,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:41,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:41,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:08:41,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:08:41,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,780 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-10-31 22:08:41,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:41,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:08:41,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:08:41,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:08:41,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,822 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:08:41,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:08:41,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:08:41,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:08:41,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:08:41,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (1/1) ... [2024-10-31 22:08:41,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:41,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:41,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:08:41,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:08:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:08:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:08:41,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:08:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:08:41,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:08:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:08:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:08:41,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:08:41,993 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 22:08:42,154 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:08:42,158 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:08:42,485 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:08:42,485 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:08:42,823 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:08:42,823 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:08:42,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:42 BoogieIcfgContainer [2024-10-31 22:08:42,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:08:42,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:08:42,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:08:42,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:08:42,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:08:41" (1/3) ... [2024-10-31 22:08:42,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a8b6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:42, skipping insertion in model container [2024-10-31 22:08:42,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:41" (2/3) ... [2024-10-31 22:08:42,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a8b6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:42, skipping insertion in model container [2024-10-31 22:08:42,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:42" (3/3) ... [2024-10-31 22:08:42,850 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2024-10-31 22:08:42,871 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:08:42,871 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:08:42,872 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:08:42,926 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:08:42,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 58 flow [2024-10-31 22:08:43,008 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-31 22:08:43,009 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:08:43,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 3/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2024-10-31 22:08:43,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 58 flow [2024-10-31 22:08:43,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 50 flow [2024-10-31 22:08:43,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:08:43,044 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;@736ea1e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:08:43,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:08:43,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:08:43,067 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-10-31 22:08:43,067 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:08:43,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:43,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:43,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:43,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash -806847430, now seen corresponding path program 1 times [2024-10-31 22:08:43,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:43,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464333326] [2024-10-31 22:08:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:43,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:43,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464333326] [2024-10-31 22:08:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464333326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:43,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:43,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:08:43,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337890056] [2024-10-31 22:08:43,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:43,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:08:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:08:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:43,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:43,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 22:08:43,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:43,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:43,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:44,040 INFO L124 PetriNetUnfolderBase]: 106/171 cut-off events. [2024-10-31 22:08:44,040 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-31 22:08:44,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 171 events. 106/171 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 510 event pairs, 19 based on Foata normal form. 2/107 useless extension candidates. Maximal degree in co-relation 318. Up to 110 conditions per place. [2024-10-31 22:08:44,045 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 21 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2024-10-31 22:08:44,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 127 flow [2024-10-31 22:08:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:08:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:08:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-31 22:08:44,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-10-31 22:08:44,065 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 45 transitions. [2024-10-31 22:08:44,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 127 flow [2024-10-31 22:08:44,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:08:44,072 INFO L231 Difference]: Finished difference. Result has 20 places, 19 transitions, 57 flow [2024-10-31 22:08:44,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=20, PETRI_TRANSITIONS=19} [2024-10-31 22:08:44,079 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-10-31 22:08:44,080 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 19 transitions, 57 flow [2024-10-31 22:08:44,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 22:08:44,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:44,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:44,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:08:44,081 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:44,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:44,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1928839812, now seen corresponding path program 1 times [2024-10-31 22:08:44,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:44,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711249382] [2024-10-31 22:08:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:44,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:44,249 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 22:08:44,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:44,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711249382] [2024-10-31 22:08:44,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711249382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:44,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:44,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:44,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706824194] [2024-10-31 22:08:44,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:44,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:44,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:44,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:44,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 22:08:44,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:44,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:44,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:44,418 INFO L124 PetriNetUnfolderBase]: 145/242 cut-off events. [2024-10-31 22:08:44,419 INFO L125 PetriNetUnfolderBase]: For 52/56 co-relation queries the response was YES. [2024-10-31 22:08:44,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 242 events. 145/242 cut-off events. For 52/56 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 807 event pairs, 12 based on Foata normal form. 7/220 useless extension candidates. Maximal degree in co-relation 172. Up to 96 conditions per place. [2024-10-31 22:08:44,424 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 37 selfloop transitions, 7 changer transitions 2/49 dead transitions. [2024-10-31 22:08:44,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 49 transitions, 236 flow [2024-10-31 22:08:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:08:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-10-31 22:08:44,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-10-31 22:08:44,427 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 57 flow. Second operand 5 states and 71 transitions. [2024-10-31 22:08:44,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 49 transitions, 236 flow [2024-10-31 22:08:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:08:44,430 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 105 flow [2024-10-31 22:08:44,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-10-31 22:08:44,431 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2024-10-31 22:08:44,432 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 105 flow [2024-10-31 22:08:44,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 22:08:44,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:44,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:44,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:08:44,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:44,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash -69603818, now seen corresponding path program 2 times [2024-10-31 22:08:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:44,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146762791] [2024-10-31 22:08:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:44,526 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 22:08:44,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:44,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146762791] [2024-10-31 22:08:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146762791] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:44,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:44,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:44,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596694286] [2024-10-31 22:08:44,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:44,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:44,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:44,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:44,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 22:08:44,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:44,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:44,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:44,691 INFO L124 PetriNetUnfolderBase]: 146/238 cut-off events. [2024-10-31 22:08:44,692 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-10-31 22:08:44,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 238 events. 146/238 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 804 event pairs, 14 based on Foata normal form. 4/239 useless extension candidates. Maximal degree in co-relation 306. Up to 103 conditions per place. [2024-10-31 22:08:44,699 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 31 selfloop transitions, 11 changer transitions 5/50 dead transitions. [2024-10-31 22:08:44,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 50 transitions, 299 flow [2024-10-31 22:08:44,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:08:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-10-31 22:08:44,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2024-10-31 22:08:44,703 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 105 flow. Second operand 5 states and 67 transitions. [2024-10-31 22:08:44,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 50 transitions, 299 flow [2024-10-31 22:08:44,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 50 transitions, 299 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:08:44,710 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 170 flow [2024-10-31 22:08:44,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-10-31 22:08:44,714 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 10 predicate places. [2024-10-31 22:08:44,714 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 170 flow [2024-10-31 22:08:44,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 22:08:44,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:44,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:44,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:08:44,716 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:44,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash -43776262, now seen corresponding path program 1 times [2024-10-31 22:08:44,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:44,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294729767] [2024-10-31 22:08:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:44,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:08:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294729767] [2024-10-31 22:08:44,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294729767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:08:44,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723902972] [2024-10-31 22:08:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:44,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:44,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:44,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:08:44,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:08:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:44,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:08:44,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:08:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:08:45,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:08:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:08:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723902972] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:08:45,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:08:45,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-31 22:08:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025756105] [2024-10-31 22:08:45,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:08:45,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:08:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:08:45,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:08:45,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:45,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:45,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:45,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:45,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:45,355 INFO L124 PetriNetUnfolderBase]: 127/223 cut-off events. [2024-10-31 22:08:45,355 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-10-31 22:08:45,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 223 events. 127/223 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 689 event pairs, 2 based on Foata normal form. 18/239 useless extension candidates. Maximal degree in co-relation 498. Up to 91 conditions per place. [2024-10-31 22:08:45,359 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 41 selfloop transitions, 9 changer transitions 3/56 dead transitions. [2024-10-31 22:08:45,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 409 flow [2024-10-31 22:08:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:08:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-10-31 22:08:45,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-31 22:08:45,361 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 170 flow. Second operand 5 states and 70 transitions. [2024-10-31 22:08:45,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 409 flow [2024-10-31 22:08:45,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 56 transitions, 403 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-31 22:08:45,368 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 242 flow [2024-10-31 22:08:45,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-10-31 22:08:45,369 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2024-10-31 22:08:45,369 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 242 flow [2024-10-31 22:08:45,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:45,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:45,370 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:45,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:08:45,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:45,575 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:45,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1256820841, now seen corresponding path program 1 times [2024-10-31 22:08:45,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:45,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883425879] [2024-10-31 22:08:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:45,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:46,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883425879] [2024-10-31 22:08:46,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883425879] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:08:46,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571799502] [2024-10-31 22:08:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:46,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:46,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:08:46,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:08:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:46,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:08:46,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:08:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:46,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:08:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:46,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571799502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:08:46,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:08:46,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-31 22:08:46,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305716335] [2024-10-31 22:08:46,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:08:46,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:08:46,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:08:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:08:46,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:46,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 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 22:08:46,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:46,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:47,351 INFO L124 PetriNetUnfolderBase]: 261/447 cut-off events. [2024-10-31 22:08:47,352 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2024-10-31 22:08:47,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 447 events. 261/447 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1679 event pairs, 10 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 1002. Up to 188 conditions per place. [2024-10-31 22:08:47,357 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 74 selfloop transitions, 23 changer transitions 7/107 dead transitions. [2024-10-31 22:08:47,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 107 transitions, 903 flow [2024-10-31 22:08:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:08:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:08:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-10-31 22:08:47,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-10-31 22:08:47,360 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 242 flow. Second operand 9 states and 128 transitions. [2024-10-31 22:08:47,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 107 transitions, 903 flow [2024-10-31 22:08:47,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 107 transitions, 893 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-31 22:08:47,370 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 485 flow [2024-10-31 22:08:47,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=485, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2024-10-31 22:08:47,371 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 27 predicate places. [2024-10-31 22:08:47,371 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 485 flow [2024-10-31 22:08:47,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 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 22:08:47,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:47,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:47,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:08:47,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:47,576 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:47,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:47,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1202987982, now seen corresponding path program 2 times [2024-10-31 22:08:47,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:47,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894688977] [2024-10-31 22:08:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:47,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:08:47,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:47,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894688977] [2024-10-31 22:08:47,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894688977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:47,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:47,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:47,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459115832] [2024-10-31 22:08:47,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:47,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:47,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:47,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:47,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:47,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 22:08:47,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:47,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:47,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:47,783 INFO L124 PetriNetUnfolderBase]: 247/423 cut-off events. [2024-10-31 22:08:47,784 INFO L125 PetriNetUnfolderBase]: For 1324/1348 co-relation queries the response was YES. [2024-10-31 22:08:47,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 423 events. 247/423 cut-off events. For 1324/1348 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1570 event pairs, 33 based on Foata normal form. 6/426 useless extension candidates. Maximal degree in co-relation 1826. Up to 185 conditions per place. [2024-10-31 22:08:47,788 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 57 selfloop transitions, 13 changer transitions 5/78 dead transitions. [2024-10-31 22:08:47,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 791 flow [2024-10-31 22:08:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:08:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-10-31 22:08:47,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-10-31 22:08:47,790 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 485 flow. Second operand 5 states and 64 transitions. [2024-10-31 22:08:47,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 791 flow [2024-10-31 22:08:47,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 742 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-10-31 22:08:47,799 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 518 flow [2024-10-31 22:08:47,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-10-31 22:08:47,800 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 33 predicate places. [2024-10-31 22:08:47,800 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 518 flow [2024-10-31 22:08:47,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 22:08:47,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:47,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:47,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:08:47,801 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:47,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:47,801 INFO L85 PathProgramCache]: Analyzing trace with hash -818120537, now seen corresponding path program 2 times [2024-10-31 22:08:47,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:47,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072965728] [2024-10-31 22:08:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:47,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:48,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072965728] [2024-10-31 22:08:48,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072965728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:08:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576103984] [2024-10-31 22:08:48,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:08:48,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:48,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:48,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:08:48,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:08:48,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:08:48,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:08:48,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:08:48,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:08:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:48,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:08:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576103984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:08:48,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:08:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-31 22:08:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94043876] [2024-10-31 22:08:48,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:08:48,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:08:48,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:08:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:08:48,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:48,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 518 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 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 22:08:48,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:48,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:48,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:50,093 INFO L124 PetriNetUnfolderBase]: 729/1242 cut-off events. [2024-10-31 22:08:50,093 INFO L125 PetriNetUnfolderBase]: For 4764/4764 co-relation queries the response was YES. [2024-10-31 22:08:50,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5856 conditions, 1242 events. 729/1242 cut-off events. For 4764/4764 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6024 event pairs, 54 based on Foata normal form. 8/1249 useless extension candidates. Maximal degree in co-relation 5138. Up to 333 conditions per place. [2024-10-31 22:08:50,109 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 146 selfloop transitions, 96 changer transitions 12/257 dead transitions. [2024-10-31 22:08:50,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 257 transitions, 2619 flow [2024-10-31 22:08:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:08:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 22:08:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 249 transitions. [2024-10-31 22:08:50,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6657754010695187 [2024-10-31 22:08:50,112 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 518 flow. Second operand 17 states and 249 transitions. [2024-10-31 22:08:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 257 transitions, 2619 flow [2024-10-31 22:08:50,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 257 transitions, 2513 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-10-31 22:08:50,137 INFO L231 Difference]: Finished difference. Result has 82 places, 147 transitions, 1757 flow [2024-10-31 22:08:50,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1757, PETRI_PLACES=82, PETRI_TRANSITIONS=147} [2024-10-31 22:08:50,138 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 59 predicate places. [2024-10-31 22:08:50,139 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 147 transitions, 1757 flow [2024-10-31 22:08:50,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 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 22:08:50,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:50,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:50,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:08:50,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:50,341 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:50,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash 10525621, now seen corresponding path program 3 times [2024-10-31 22:08:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653099289] [2024-10-31 22:08:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:50,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:50,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653099289] [2024-10-31 22:08:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653099289] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:08:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808443391] [2024-10-31 22:08:50,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:08:50,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:50,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:50,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:08:50,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:08:50,794 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-31 22:08:50,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:08:50,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:08:50,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:08:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:51,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:08:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:51,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808443391] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:08:51,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:08:51,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-31 22:08:51,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563263787] [2024-10-31 22:08:51,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:08:51,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:08:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:51,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:08:51,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:08:51,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:51,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 147 transitions, 1757 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 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 22:08:51,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:51,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:51,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:52,370 INFO L124 PetriNetUnfolderBase]: 1487/2540 cut-off events. [2024-10-31 22:08:52,371 INFO L125 PetriNetUnfolderBase]: For 13105/13105 co-relation queries the response was YES. [2024-10-31 22:08:52,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 2540 events. 1487/2540 cut-off events. For 13105/13105 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14237 event pairs, 122 based on Foata normal form. 7/2546 useless extension candidates. Maximal degree in co-relation 11819. Up to 658 conditions per place. [2024-10-31 22:08:52,409 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 189 selfloop transitions, 164 changer transitions 12/368 dead transitions. [2024-10-31 22:08:52,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 368 transitions, 4819 flow [2024-10-31 22:08:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:08:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:08:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-10-31 22:08:52,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528925619834711 [2024-10-31 22:08:52,412 INFO L175 Difference]: Start difference. First operand has 82 places, 147 transitions, 1757 flow. Second operand 11 states and 158 transitions. [2024-10-31 22:08:52,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 368 transitions, 4819 flow [2024-10-31 22:08:52,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 368 transitions, 4462 flow, removed 175 selfloop flow, removed 2 redundant places. [2024-10-31 22:08:52,487 INFO L231 Difference]: Finished difference. Result has 95 places, 258 transitions, 3563 flow [2024-10-31 22:08:52,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3563, PETRI_PLACES=95, PETRI_TRANSITIONS=258} [2024-10-31 22:08:52,488 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 72 predicate places. [2024-10-31 22:08:52,491 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 258 transitions, 3563 flow [2024-10-31 22:08:52,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 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 22:08:52,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:52,492 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:52,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:08:52,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:08:52,692 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:08:52,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash 316240485, now seen corresponding path program 1 times [2024-10-31 22:08:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:52,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097709706] [2024-10-31 22:08:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:52,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:53,217 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 22:08:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097709706] [2024-10-31 22:08:53,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097709706] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:08:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367664296] [2024-10-31 22:08:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:53,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:53,221 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:08:53,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b11dcf-a3a2-49fb-b6b9-5c933bf6ec5e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:08:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:53,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 22:08:53,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:08:54,108 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 22:08:54,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:08:54,774 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 22:08:54,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367664296] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:08:54,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:08:54,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-31 22:08:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730994447] [2024-10-31 22:08:54,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:08:54,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:08:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:08:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:08:54,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-31 22:08:54,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 258 transitions, 3563 flow. Second operand has 19 states, 19 states have (on average 8.157894736842104) internal successors, (155), 19 states have internal predecessors, (155), 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 22:08:54,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:54,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-31 22:08:54,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand