./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx --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 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:46,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:46,816 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 21:00:46,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:46,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:46,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:46,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:46,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:46,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:00:46,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:00:46,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:46,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:46,878 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:46,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:46,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:00:46,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:46,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:00:46,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:46,883 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:00:46,883 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:00:46,884 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:00:46,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:00:46,885 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:00:46,885 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:00:46,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:00:46,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:46,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:46,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:46,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:00:46,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:00:46,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:46,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:46,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:00:46,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:00:46,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:00:46,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:00:46,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:00:46,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:00:46,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:00:46,892 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_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2023-11-21 21:00:47,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:47,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:47,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:47,228 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:47,228 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:47,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-21 21:00:50,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:50,599 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:50,600 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-21 21:00:50,618 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/data/43afb1c3f/74fe58990921446982938d1e12bec469/FLAG62a5d3e4f [2023-11-21 21:00:50,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/data/43afb1c3f/74fe58990921446982938d1e12bec469 [2023-11-21 21:00:50,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:50,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:50,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:50,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:50,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:50,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:50" (1/1) ... [2023-11-21 21:00:50,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f45ddcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:50, skipping insertion in model container [2023-11-21 21:00:50,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:50" (1/1) ... [2023-11-21 21:00:50,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:51,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:51,264 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:51,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:51,410 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:51,411 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:51,419 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:51,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51 WrapperNode [2023-11-21 21:00:51,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:51,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:51,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:51,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:51,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,517 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-21 21:00:51,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:51,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:51,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:51,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:51,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:51,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:51,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:51,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:51,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (1/1) ... [2023-11-21 21:00:51,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:51,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:51,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:51,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:00:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 21:00:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:00:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:00:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 21:00:51,706 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 21:00:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 21:00:51,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 21:00:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 21:00:51,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 21:00:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:00:51,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 21:00:51,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:51,712 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 21:00:51,881 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:51,883 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:52,117 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:52,282 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:52,286 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:00:52,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:52 BoogieIcfgContainer [2023-11-21 21:00:52,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:52,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:00:52,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:00:52,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:00:52,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:00:50" (1/3) ... [2023-11-21 21:00:52,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5338789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:52, skipping insertion in model container [2023-11-21 21:00:52,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:51" (2/3) ... [2023-11-21 21:00:52,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5338789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:52, skipping insertion in model container [2023-11-21 21:00:52,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:52" (3/3) ... [2023-11-21 21:00:52,304 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-21 21:00:52,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:00:52,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 21:00:52,328 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:00:52,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 21:00:52,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 52 transitions, 116 flow [2023-11-21 21:00:52,460 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-21 21:00:52,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:00:52,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-11-21 21:00:52,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 52 transitions, 116 flow [2023-11-21 21:00:52,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 48 transitions, 105 flow [2023-11-21 21:00:52,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:00:52,490 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5cf99f98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:00:52,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-21 21:00:52,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:00:52,495 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 21:00:52,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:00:52,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:52,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 21:00:52,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:52,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 7433, now seen corresponding path program 1 times [2023-11-21 21:00:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:52,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998208095] [2023-11-21 21:00:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:52,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:52,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998208095] [2023-11-21 21:00:52,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998208095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:52,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:52,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:00:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017991382] [2023-11-21 21:00:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:52,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:52,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-21 21:00:52,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:52,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:52,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-21 21:00:52,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:53,029 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2023-11-21 21:00:53,029 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 21:00:53,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 247 events. 75/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1346 event pairs, 63 based on Foata normal form. 16/234 useless extension candidates. Maximal degree in co-relation 389. Up to 117 conditions per place. [2023-11-21 21:00:53,038 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-21 21:00:53,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 139 flow [2023-11-21 21:00:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:53,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-21 21:00:53,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-21 21:00:53,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:53,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-21 21:00:53,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,065 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 105 flow. Second operand 3 states and 117 transitions. [2023-11-21 21:00:53,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 139 flow [2023-11-21 21:00:53,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 21:00:53,071 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-21 21:00:53,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-21 21:00:53,077 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-21 21:00:53,077 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-21 21:00:53,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:53,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:53,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 21:00:53,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:00:53,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:53,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 7434, now seen corresponding path program 1 times [2023-11-21 21:00:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013208647] [2023-11-21 21:00:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:53,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:53,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013208647] [2023-11-21 21:00:53,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013208647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:53,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:00:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29796610] [2023-11-21 21:00:53,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:53,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:53,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-21 21:00:53,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-21 21:00:53,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:53,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-21 21:00:53,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:53,375 INFO L124 PetriNetUnfolderBase]: 75/246 cut-off events. [2023-11-21 21:00:53,375 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-21 21:00:53,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 246 events. 75/246 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1342 event pairs, 63 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 397. Up to 116 conditions per place. [2023-11-21 21:00:53,380 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-21 21:00:53,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 136 flow [2023-11-21 21:00:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-21 21:00:53,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-21 21:00:53,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:53,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-21 21:00:53,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,387 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 117 transitions. [2023-11-21 21:00:53,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 136 flow [2023-11-21 21:00:53,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:53,390 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-21 21:00:53,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-21 21:00:53,391 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-21 21:00:53,391 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-21 21:00:53,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-21 21:00:53,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:53,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 21:00:53,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:00:53,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:53,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash 221648202, now seen corresponding path program 1 times [2023-11-21 21:00:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113383603] [2023-11-21 21:00:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113383603] [2023-11-21 21:00:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113383603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108579447] [2023-11-21 21:00:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:53,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:53,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:53,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-21 21:00:53,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-21 21:00:53,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:53,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-21 21:00:53,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:53,654 INFO L124 PetriNetUnfolderBase]: 76/244 cut-off events. [2023-11-21 21:00:53,654 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-21 21:00:53,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 244 events. 76/244 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1312 event pairs, 63 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 398. Up to 116 conditions per place. [2023-11-21 21:00:53,660 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-21 21:00:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 136 flow [2023-11-21 21:00:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 21:00:53,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-21 21:00:53,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 21:00:53,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 21:00:53,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:53,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 21:00:53,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-11-21 21:00:53,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,675 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 115 transitions. [2023-11-21 21:00:53,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 136 flow [2023-11-21 21:00:53,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:53,682 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-21 21:00:53,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-21 21:00:53,685 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-21 21:00:53,686 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-21 21:00:53,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-21 21:00:53,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:53,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 21:00:53,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:00:53,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:53,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash 221648203, now seen corresponding path program 1 times [2023-11-21 21:00:53,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616998520] [2023-11-21 21:00:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:53,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616998520] [2023-11-21 21:00:53,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616998520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:53,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:53,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:53,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242103874] [2023-11-21 21:00:53,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:53,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:53,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:53,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:53,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-21 21:00:53,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:53,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:53,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-21 21:00:53,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:53,973 INFO L124 PetriNetUnfolderBase]: 75/242 cut-off events. [2023-11-21 21:00:53,973 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 21:00:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 242 events. 75/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1348 event pairs, 42 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 395. Up to 113 conditions per place. [2023-11-21 21:00:53,977 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-21 21:00:53,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 132 flow [2023-11-21 21:00:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-21 21:00:53,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-21 21:00:53,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:53,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-21 21:00:53,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-21 21:00:53,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:53,982 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 117 transitions. [2023-11-21 21:00:53,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 132 flow [2023-11-21 21:00:53,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:53,984 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-21 21:00:53,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-21 21:00:53,986 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-21 21:00:53,986 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-21 21:00:53,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:53,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:53,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:53,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:00:53,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:53,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061700, now seen corresponding path program 1 times [2023-11-21 21:00:53,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381288918] [2023-11-21 21:00:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:54,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:54,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381288918] [2023-11-21 21:00:54,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381288918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:54,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:54,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:54,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531760763] [2023-11-21 21:00:54,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:54,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:54,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:54,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:54,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:54,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-21 21:00:54,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:54,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:54,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-21 21:00:54,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:54,145 INFO L124 PetriNetUnfolderBase]: 79/242 cut-off events. [2023-11-21 21:00:54,146 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 21:00:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 242 events. 79/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1303 event pairs, 27 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 403. Up to 112 conditions per place. [2023-11-21 21:00:54,149 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-21 21:00:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 132 flow [2023-11-21 21:00:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 21:00:54,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-21 21:00:54,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 21:00:54,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 21:00:54,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:54,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 21:00:54,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-11-21 21:00:54,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:54,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:54,154 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 115 transitions. [2023-11-21 21:00:54,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 132 flow [2023-11-21 21:00:54,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:54,156 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-21 21:00:54,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-21 21:00:54,157 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-21 21:00:54,157 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-21 21:00:54,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:54,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:54,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:00:54,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061701, now seen corresponding path program 1 times [2023-11-21 21:00:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:54,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201945553] [2023-11-21 21:00:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201945553] [2023-11-21 21:00:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201945553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:54,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:54,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132576276] [2023-11-21 21:00:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:54,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:54,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:54,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:54,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-21 21:00:54,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-21 21:00:54,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:54,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-21 21:00:54,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:54,345 INFO L124 PetriNetUnfolderBase]: 75/234 cut-off events. [2023-11-21 21:00:54,346 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-21 21:00:54,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 234 events. 75/234 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1248 event pairs, 27 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 389. Up to 104 conditions per place. [2023-11-21 21:00:54,350 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-21 21:00:54,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 128 flow [2023-11-21 21:00:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-21 21:00:54,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-21 21:00:54,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-21 21:00:54,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-21 21:00:54,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:54,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-21 21:00:54,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-21 21:00:54,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:54,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-21 21:00:54,358 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 117 transitions. [2023-11-21 21:00:54,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 128 flow [2023-11-21 21:00:54,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:54,361 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-21 21:00:54,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-21 21:00:54,364 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-11-21 21:00:54,365 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-21 21:00:54,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-21 21:00:54,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:54,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:54,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:00:54,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:54,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash -395415043, now seen corresponding path program 1 times [2023-11-21 21:00:54,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387640807] [2023-11-21 21:00:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:54,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:54,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387640807] [2023-11-21 21:00:54,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387640807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:54,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:54,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:00:54,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623746823] [2023-11-21 21:00:54,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:54,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:00:54,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:00:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:00:55,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-21 21:00:55,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 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) [2023-11-21 21:00:55,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:55,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-21 21:00:55,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:55,473 INFO L124 PetriNetUnfolderBase]: 209/558 cut-off events. [2023-11-21 21:00:55,474 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-21 21:00:55,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 558 events. 209/558 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3745 event pairs, 72 based on Foata normal form. 12/547 useless extension candidates. Maximal degree in co-relation 968. Up to 163 conditions per place. [2023-11-21 21:00:55,481 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 34 selfloop transitions, 6 changer transitions 6/67 dead transitions. [2023-11-21 21:00:55,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 248 flow [2023-11-21 21:00:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:00:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 21:00:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 257 transitions. [2023-11-21 21:00:55,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7060439560439561 [2023-11-21 21:00:55,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 257 transitions. [2023-11-21 21:00:55,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 257 transitions. [2023-11-21 21:00:55,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:55,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 257 transitions. [2023-11-21 21:00:55,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 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) [2023-11-21 21:00:55,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 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) [2023-11-21 21:00:55,488 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 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) [2023-11-21 21:00:55,488 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 7 states and 257 transitions. [2023-11-21 21:00:55,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 248 flow [2023-11-21 21:00:55,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:55,492 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 123 flow [2023-11-21 21:00:55,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-11-21 21:00:55,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-11-21 21:00:55,495 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 123 flow [2023-11-21 21:00:55,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 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) [2023-11-21 21:00:55,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:55,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:55,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 21:00:55,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:55,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:55,498 INFO L85 PathProgramCache]: Analyzing trace with hash -395413506, now seen corresponding path program 1 times [2023-11-21 21:00:55,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:55,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443591922] [2023-11-21 21:00:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:55,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:55,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443591922] [2023-11-21 21:00:55,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443591922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:55,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:55,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:00:55,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295792961] [2023-11-21 21:00:55,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:55,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:00:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:00:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:55,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-21 21:00:55,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-21 21:00:55,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:55,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-21 21:00:55,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:56,587 INFO L124 PetriNetUnfolderBase]: 2722/5175 cut-off events. [2023-11-21 21:00:56,587 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2023-11-21 21:00:56,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10075 conditions, 5175 events. 2722/5175 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 42336 event pairs, 630 based on Foata normal form. 0/4926 useless extension candidates. Maximal degree in co-relation 10059. Up to 1471 conditions per place. [2023-11-21 21:00:56,635 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 65 selfloop transitions, 29 changer transitions 6/118 dead transitions. [2023-11-21 21:00:56,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 118 transitions, 528 flow [2023-11-21 21:00:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:00:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 21:00:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 339 transitions. [2023-11-21 21:00:56,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2023-11-21 21:00:56,638 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 339 transitions. [2023-11-21 21:00:56,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 339 transitions. [2023-11-21 21:00:56,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:56,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 339 transitions. [2023-11-21 21:00:56,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.666666666666664) internal successors, (339), 9 states have internal predecessors, (339), 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) [2023-11-21 21:00:56,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-21 21:00:56,642 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-21 21:00:56,642 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 123 flow. Second operand 9 states and 339 transitions. [2023-11-21 21:00:56,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 118 transitions, 528 flow [2023-11-21 21:00:56,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 522 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:56,656 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 360 flow [2023-11-21 21:00:56,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-11-21 21:00:56,659 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-21 21:00:56,659 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 360 flow [2023-11-21 21:00:56,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-21 21:00:56,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:56,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:56,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 21:00:56,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:56,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash 995229616, now seen corresponding path program 1 times [2023-11-21 21:00:56,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:56,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968416656] [2023-11-21 21:00:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:56,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968416656] [2023-11-21 21:00:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968416656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:57,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:00:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248080573] [2023-11-21 21:00:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:00:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:00:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:00:57,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2023-11-21 21:00:57,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 360 flow. Second operand has 9 states, 9 states have (on average 29.555555555555557) internal successors, (266), 9 states have internal predecessors, (266), 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) [2023-11-21 21:00:57,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:57,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2023-11-21 21:00:57,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:58,719 INFO L124 PetriNetUnfolderBase]: 3026/6628 cut-off events. [2023-11-21 21:00:58,720 INFO L125 PetriNetUnfolderBase]: For 10220/10617 co-relation queries the response was YES. [2023-11-21 21:00:58,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17883 conditions, 6628 events. 3026/6628 cut-off events. For 10220/10617 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 64607 event pairs, 1329 based on Foata normal form. 318/6310 useless extension candidates. Maximal degree in co-relation 17859. Up to 2108 conditions per place. [2023-11-21 21:00:58,818 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 39 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2023-11-21 21:00:58,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 576 flow [2023-11-21 21:00:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:00:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 21:00:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2023-11-21 21:00:58,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6394230769230769 [2023-11-21 21:00:58,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2023-11-21 21:00:58,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2023-11-21 21:00:58,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:58,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2023-11-21 21:00:58,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 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) [2023-11-21 21:00:58,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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) [2023-11-21 21:00:58,824 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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) [2023-11-21 21:00:58,824 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 360 flow. Second operand 8 states and 266 transitions. [2023-11-21 21:00:58,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 576 flow [2023-11-21 21:00:58,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 21:00:58,884 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 434 flow [2023-11-21 21:00:58,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-11-21 21:00:58,886 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-11-21 21:00:58,886 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 434 flow [2023-11-21 21:00:58,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.555555555555557) internal successors, (266), 9 states have internal predecessors, (266), 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) [2023-11-21 21:00:58,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:58,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:58,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 21:00:58,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:00:58,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:58,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1175539711, now seen corresponding path program 1 times [2023-11-21 21:00:58,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:58,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777689989] [2023-11-21 21:00:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:58,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:59,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:59,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777689989] [2023-11-21 21:00:59,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777689989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:59,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:59,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:00:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273545651] [2023-11-21 21:00:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:00:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:00:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:59,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-21 21:00:59,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2023-11-21 21:00:59,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:59,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-21 21:00:59,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:00,712 INFO L124 PetriNetUnfolderBase]: 4457/8269 cut-off events. [2023-11-21 21:01:00,712 INFO L125 PetriNetUnfolderBase]: For 15404/15406 co-relation queries the response was YES. [2023-11-21 21:01:00,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26475 conditions, 8269 events. 4457/8269 cut-off events. For 15404/15406 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 73033 event pairs, 372 based on Foata normal form. 182/8377 useless extension candidates. Maximal degree in co-relation 26449. Up to 1679 conditions per place. [2023-11-21 21:01:00,779 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 47 selfloop transitions, 8 changer transitions 113/185 dead transitions. [2023-11-21 21:01:00,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 185 transitions, 1504 flow [2023-11-21 21:01:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 21:01:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-21 21:01:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 435 transitions. [2023-11-21 21:01:00,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2023-11-21 21:01:00,785 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 435 transitions. [2023-11-21 21:01:00,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 435 transitions. [2023-11-21 21:01:00,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:00,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 435 transitions. [2023-11-21 21:01:00,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 36.25) internal successors, (435), 12 states have internal predecessors, (435), 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) [2023-11-21 21:01:00,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 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) [2023-11-21 21:01:00,790 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 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) [2023-11-21 21:01:00,790 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 434 flow. Second operand 12 states and 435 transitions. [2023-11-21 21:01:00,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 185 transitions, 1504 flow [2023-11-21 21:01:00,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 185 transitions, 1454 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-11-21 21:01:00,888 INFO L231 Difference]: Finished difference. Result has 94 places, 51 transitions, 322 flow [2023-11-21 21:01:00,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=322, PETRI_PLACES=94, PETRI_TRANSITIONS=51} [2023-11-21 21:01:00,889 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2023-11-21 21:01:00,889 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 51 transitions, 322 flow [2023-11-21 21:01:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2023-11-21 21:01:00,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:00,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:00,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 21:01:00,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:00,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash 786667155, now seen corresponding path program 1 times [2023-11-21 21:01:00,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:00,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406611799] [2023-11-21 21:01:00,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:00,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406611799] [2023-11-21 21:01:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406611799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:01,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:01,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:01:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197779167] [2023-11-21 21:01:01,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:01,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:01:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:01,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:01:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:01,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-21 21:01:01,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 51 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2023-11-21 21:01:01,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:01,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-21 21:01:01,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:01,937 INFO L124 PetriNetUnfolderBase]: 1948/4153 cut-off events. [2023-11-21 21:01:01,937 INFO L125 PetriNetUnfolderBase]: For 15246/15290 co-relation queries the response was YES. [2023-11-21 21:01:01,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13801 conditions, 4153 events. 1948/4153 cut-off events. For 15246/15290 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34938 event pairs, 404 based on Foata normal form. 128/4197 useless extension candidates. Maximal degree in co-relation 13766. Up to 1223 conditions per place. [2023-11-21 21:01:01,977 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 45 selfloop transitions, 9 changer transitions 40/111 dead transitions. [2023-11-21 21:01:01,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 111 transitions, 946 flow [2023-11-21 21:01:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:01:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 21:01:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 347 transitions. [2023-11-21 21:01:01,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6673076923076923 [2023-11-21 21:01:01,980 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 347 transitions. [2023-11-21 21:01:01,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 347 transitions. [2023-11-21 21:01:01,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:01,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 347 transitions. [2023-11-21 21:01:01,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.7) internal successors, (347), 10 states have internal predecessors, (347), 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) [2023-11-21 21:01:01,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-21 21:01:01,984 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-21 21:01:01,984 INFO L175 Difference]: Start difference. First operand has 94 places, 51 transitions, 322 flow. Second operand 10 states and 347 transitions. [2023-11-21 21:01:01,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 111 transitions, 946 flow [2023-11-21 21:01:02,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 766 flow, removed 51 selfloop flow, removed 9 redundant places. [2023-11-21 21:01:02,065 INFO L231 Difference]: Finished difference. Result has 86 places, 56 transitions, 369 flow [2023-11-21 21:01:02,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=369, PETRI_PLACES=86, PETRI_TRANSITIONS=56} [2023-11-21 21:01:02,066 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2023-11-21 21:01:02,066 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 56 transitions, 369 flow [2023-11-21 21:01:02,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2023-11-21 21:01:02,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:02,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:02,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 21:01:02,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:02,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1881433394, now seen corresponding path program 1 times [2023-11-21 21:01:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411254880] [2023-11-21 21:01:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411254880] [2023-11-21 21:01:02,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411254880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:02,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:02,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:01:02,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218914006] [2023-11-21 21:01:02,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:02,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:01:02,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:01:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:02,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2023-11-21 21:01:02,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 56 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2023-11-21 21:01:02,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:02,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2023-11-21 21:01:02,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:03,024 INFO L124 PetriNetUnfolderBase]: 1691/3634 cut-off events. [2023-11-21 21:01:03,025 INFO L125 PetriNetUnfolderBase]: For 9083/9302 co-relation queries the response was YES. [2023-11-21 21:01:03,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10970 conditions, 3634 events. 1691/3634 cut-off events. For 9083/9302 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 31054 event pairs, 760 based on Foata normal form. 189/3653 useless extension candidates. Maximal degree in co-relation 10933. Up to 1342 conditions per place. [2023-11-21 21:01:03,054 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 28 selfloop transitions, 6 changer transitions 48/112 dead transitions. [2023-11-21 21:01:03,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 808 flow [2023-11-21 21:01:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 21:01:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-21 21:01:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 446 transitions. [2023-11-21 21:01:03,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597633136094675 [2023-11-21 21:01:03,057 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 446 transitions. [2023-11-21 21:01:03,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 446 transitions. [2023-11-21 21:01:03,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:03,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 446 transitions. [2023-11-21 21:01:03,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 34.30769230769231) internal successors, (446), 13 states have internal predecessors, (446), 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) [2023-11-21 21:01:03,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 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) [2023-11-21 21:01:03,061 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 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) [2023-11-21 21:01:03,061 INFO L175 Difference]: Start difference. First operand has 86 places, 56 transitions, 369 flow. Second operand 13 states and 446 transitions. [2023-11-21 21:01:03,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 808 flow [2023-11-21 21:01:03,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 112 transitions, 744 flow, removed 29 selfloop flow, removed 10 redundant places. [2023-11-21 21:01:03,117 INFO L231 Difference]: Finished difference. Result has 93 places, 56 transitions, 375 flow [2023-11-21 21:01:03,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=375, PETRI_PLACES=93, PETRI_TRANSITIONS=56} [2023-11-21 21:01:03,118 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2023-11-21 21:01:03,119 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 56 transitions, 375 flow [2023-11-21 21:01:03,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2023-11-21 21:01:03,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:03,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:03,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 21:01:03,119 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:03,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:03,120 INFO L85 PathProgramCache]: Analyzing trace with hash -360795696, now seen corresponding path program 1 times [2023-11-21 21:01:03,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:03,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720697149] [2023-11-21 21:01:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:03,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:03,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:03,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720697149] [2023-11-21 21:01:03,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720697149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:03,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:03,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:01:03,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288698199] [2023-11-21 21:01:03,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:03,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:01:03,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:03,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:01:03,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:03,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-21 21:01:03,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 56 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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) [2023-11-21 21:01:03,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:03,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-21 21:01:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:03,933 INFO L124 PetriNetUnfolderBase]: 1281/2810 cut-off events. [2023-11-21 21:01:03,933 INFO L125 PetriNetUnfolderBase]: For 8063/8087 co-relation queries the response was YES. [2023-11-21 21:01:03,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9344 conditions, 2810 events. 1281/2810 cut-off events. For 8063/8087 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22863 event pairs, 339 based on Foata normal form. 24/2766 useless extension candidates. Maximal degree in co-relation 9305. Up to 988 conditions per place. [2023-11-21 21:01:03,968 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 44 selfloop transitions, 19 changer transitions 22/102 dead transitions. [2023-11-21 21:01:03,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 102 transitions, 816 flow [2023-11-21 21:01:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:01:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 21:01:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2023-11-21 21:01:03,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2023-11-21 21:01:03,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 340 transitions. [2023-11-21 21:01:03,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 340 transitions. [2023-11-21 21:01:03,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:03,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 340 transitions. [2023-11-21 21:01:03,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2023-11-21 21:01:03,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-21 21:01:03,978 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-21 21:01:03,978 INFO L175 Difference]: Start difference. First operand has 93 places, 56 transitions, 375 flow. Second operand 10 states and 340 transitions. [2023-11-21 21:01:03,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 102 transitions, 816 flow [2023-11-21 21:01:04,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 720 flow, removed 38 selfloop flow, removed 15 redundant places. [2023-11-21 21:01:04,029 INFO L231 Difference]: Finished difference. Result has 86 places, 60 transitions, 476 flow [2023-11-21 21:01:04,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=476, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2023-11-21 21:01:04,030 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2023-11-21 21:01:04,030 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 476 flow [2023-11-21 21:01:04,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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) [2023-11-21 21:01:04,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:04,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:04,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 21:01:04,031 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:04,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash 564117023, now seen corresponding path program 1 times [2023-11-21 21:01:04,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:04,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205743738] [2023-11-21 21:01:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:04,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:04,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:04,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205743738] [2023-11-21 21:01:04,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205743738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:04,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:01:04,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327669643] [2023-11-21 21:01:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:01:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:01:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:01:04,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2023-11-21 21:01:04,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 476 flow. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 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) [2023-11-21 21:01:04,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:04,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2023-11-21 21:01:04,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:04,999 INFO L124 PetriNetUnfolderBase]: 1859/3811 cut-off events. [2023-11-21 21:01:05,000 INFO L125 PetriNetUnfolderBase]: For 14428/14433 co-relation queries the response was YES. [2023-11-21 21:01:05,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12795 conditions, 3811 events. 1859/3811 cut-off events. For 14428/14433 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 31215 event pairs, 484 based on Foata normal form. 91/3871 useless extension candidates. Maximal degree in co-relation 12759. Up to 1054 conditions per place. [2023-11-21 21:01:05,023 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 38 selfloop transitions, 8 changer transitions 52/114 dead transitions. [2023-11-21 21:01:05,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 1073 flow [2023-11-21 21:01:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:01:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 21:01:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2023-11-21 21:01:05,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6452991452991453 [2023-11-21 21:01:05,025 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2023-11-21 21:01:05,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2023-11-21 21:01:05,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:05,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2023-11-21 21:01:05,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 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) [2023-11-21 21:01:05,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-21 21:01:05,029 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-21 21:01:05,029 INFO L175 Difference]: Start difference. First operand has 86 places, 60 transitions, 476 flow. Second operand 9 states and 302 transitions. [2023-11-21 21:01:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 1073 flow [2023-11-21 21:01:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 1014 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-11-21 21:01:05,067 INFO L231 Difference]: Finished difference. Result has 87 places, 45 transitions, 310 flow [2023-11-21 21:01:05,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=310, PETRI_PLACES=87, PETRI_TRANSITIONS=45} [2023-11-21 21:01:05,068 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2023-11-21 21:01:05,068 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 45 transitions, 310 flow [2023-11-21 21:01:05,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 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) [2023-11-21 21:01:05,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:05,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:05,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 21:01:05,069 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:05,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1675371017, now seen corresponding path program 1 times [2023-11-21 21:01:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:05,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850339107] [2023-11-21 21:01:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:05,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850339107] [2023-11-21 21:01:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850339107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:05,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:05,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628709792] [2023-11-21 21:01:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:05,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:01:05,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:01:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:01:05,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-21 21:01:05,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 45 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2023-11-21 21:01:05,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:05,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-21 21:01:05,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:05,394 INFO L124 PetriNetUnfolderBase]: 647/1244 cut-off events. [2023-11-21 21:01:05,395 INFO L125 PetriNetUnfolderBase]: For 1210/1258 co-relation queries the response was YES. [2023-11-21 21:01:05,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 1244 events. 647/1244 cut-off events. For 1210/1258 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7586 event pairs, 180 based on Foata normal form. 53/1242 useless extension candidates. Maximal degree in co-relation 2852. Up to 639 conditions per place. [2023-11-21 21:01:05,404 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 25 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-11-21 21:01:05,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 58 transitions, 403 flow [2023-11-21 21:01:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:01:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 21:01:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2023-11-21 21:01:05,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2023-11-21 21:01:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 152 transitions. [2023-11-21 21:01:05,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 152 transitions. [2023-11-21 21:01:05,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:05,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 152 transitions. [2023-11-21 21:01:05,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2023-11-21 21:01:05,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-11-21 21:01:05,409 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-11-21 21:01:05,409 INFO L175 Difference]: Start difference. First operand has 87 places, 45 transitions, 310 flow. Second operand 4 states and 152 transitions. [2023-11-21 21:01:05,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 58 transitions, 403 flow [2023-11-21 21:01:05,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 333 flow, removed 11 selfloop flow, removed 19 redundant places. [2023-11-21 21:01:05,419 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 282 flow [2023-11-21 21:01:05,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2023-11-21 21:01:05,420 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-11-21 21:01:05,420 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 282 flow [2023-11-21 21:01:05,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2023-11-21 21:01:05,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:05,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:05,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 21:01:05,422 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:05,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash -631153454, now seen corresponding path program 1 times [2023-11-21 21:01:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448346532] [2023-11-21 21:01:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:05,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:05,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:05,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448346532] [2023-11-21 21:01:05,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448346532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:05,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:01:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063700453] [2023-11-21 21:01:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:01:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:01:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:01:05,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-21 21:01:05,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2023-11-21 21:01:05,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:05,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-21 21:01:05,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:05,743 INFO L124 PetriNetUnfolderBase]: 555/1090 cut-off events. [2023-11-21 21:01:05,743 INFO L125 PetriNetUnfolderBase]: For 676/979 co-relation queries the response was YES. [2023-11-21 21:01:05,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 1090 events. 555/1090 cut-off events. For 676/979 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6310 event pairs, 54 based on Foata normal form. 60/1107 useless extension candidates. Maximal degree in co-relation 2730. Up to 424 conditions per place. [2023-11-21 21:01:05,750 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 30 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2023-11-21 21:01:05,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 410 flow [2023-11-21 21:01:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:01:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 21:01:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2023-11-21 21:01:05,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2023-11-21 21:01:05,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 190 transitions. [2023-11-21 21:01:05,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 190 transitions. [2023-11-21 21:01:05,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:05,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 190 transitions. [2023-11-21 21:01:05,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2023-11-21 21:01:05,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 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) [2023-11-21 21:01:05,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 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) [2023-11-21 21:01:05,757 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 282 flow. Second operand 5 states and 190 transitions. [2023-11-21 21:01:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 410 flow [2023-11-21 21:01:05,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:05,761 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 334 flow [2023-11-21 21:01:05,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-11-21 21:01:05,762 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-21 21:01:05,762 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 334 flow [2023-11-21 21:01:05,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2023-11-21 21:01:05,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:05,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:05,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 21:01:05,764 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:05,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2054078627, now seen corresponding path program 1 times [2023-11-21 21:01:05,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:05,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213605976] [2023-11-21 21:01:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:05,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:05,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213605976] [2023-11-21 21:01:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213605976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:05,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:05,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:01:05,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86189386] [2023-11-21 21:01:05,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:01:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:01:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:05,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-21 21:01:05,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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) [2023-11-21 21:01:05,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:05,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-21 21:01:05,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:06,164 INFO L124 PetriNetUnfolderBase]: 419/794 cut-off events. [2023-11-21 21:01:06,164 INFO L125 PetriNetUnfolderBase]: For 1252/1879 co-relation queries the response was YES. [2023-11-21 21:01:06,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 794 events. 419/794 cut-off events. For 1252/1879 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4078 event pairs, 18 based on Foata normal form. 56/811 useless extension candidates. Maximal degree in co-relation 2442. Up to 264 conditions per place. [2023-11-21 21:01:06,169 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 26 selfloop transitions, 11 changer transitions 5/68 dead transitions. [2023-11-21 21:01:06,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 452 flow [2023-11-21 21:01:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:01:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:01:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2023-11-21 21:01:06,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7115384615384616 [2023-11-21 21:01:06,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 222 transitions. [2023-11-21 21:01:06,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 222 transitions. [2023-11-21 21:01:06,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:06,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 222 transitions. [2023-11-21 21:01:06,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 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) [2023-11-21 21:01:06,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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) [2023-11-21 21:01:06,174 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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) [2023-11-21 21:01:06,174 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 334 flow. Second operand 6 states and 222 transitions. [2023-11-21 21:01:06,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 452 flow [2023-11-21 21:01:06,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 426 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-21 21:01:06,180 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 325 flow [2023-11-21 21:01:06,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-11-21 21:01:06,180 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-11-21 21:01:06,181 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 325 flow [2023-11-21 21:01:06,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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) [2023-11-21 21:01:06,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:06,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 21:01:06,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-21 21:01:06,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:06,182 INFO L85 PathProgramCache]: Analyzing trace with hash -780041732, now seen corresponding path program 1 times [2023-11-21 21:01:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:06,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304094233] [2023-11-21 21:01:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:06,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:06,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304094233] [2023-11-21 21:01:06,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304094233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:06,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:06,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:01:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200326661] [2023-11-21 21:01:06,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:06,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:01:06,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:01:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:06,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2023-11-21 21:01:06,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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) [2023-11-21 21:01:06,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:06,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2023-11-21 21:01:06,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:06,549 INFO L124 PetriNetUnfolderBase]: 274/599 cut-off events. [2023-11-21 21:01:06,550 INFO L125 PetriNetUnfolderBase]: For 1360/1454 co-relation queries the response was YES. [2023-11-21 21:01:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 599 events. 274/599 cut-off events. For 1360/1454 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3386 event pairs, 45 based on Foata normal form. 14/536 useless extension candidates. Maximal degree in co-relation 2011. Up to 319 conditions per place. [2023-11-21 21:01:06,553 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-11-21 21:01:06,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 59 transitions, 406 flow [2023-11-21 21:01:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:01:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:01:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2023-11-21 21:01:06,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2023-11-21 21:01:06,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 202 transitions. [2023-11-21 21:01:06,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 202 transitions. [2023-11-21 21:01:06,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:06,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 202 transitions. [2023-11-21 21:01:06,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 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) [2023-11-21 21:01:06,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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) [2023-11-21 21:01:06,558 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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) [2023-11-21 21:01:06,558 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 325 flow. Second operand 6 states and 202 transitions. [2023-11-21 21:01:06,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 59 transitions, 406 flow [2023-11-21 21:01:06,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 340 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-21 21:01:06,566 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2023-11-21 21:01:06,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2023-11-21 21:01:06,567 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-21 21:01:06,567 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2023-11-21 21:01:06,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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) [2023-11-21 21:01:06,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-21 21:01:06,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-21 21:01:06,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-21 21:01:06,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-21 21:01:06,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-21 21:01:06,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-21 21:01:06,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-21 21:01:06,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-21 21:01:06,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-21 21:01:06,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-21 21:01:06,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-21 21:01:06,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 21:01:06,573 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:06,577 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 21:01:06,577 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:01:06,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:01:06 BasicIcfg [2023-11-21 21:01:06,586 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:01:06,586 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:01:06,587 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:01:06,587 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:01:06,587 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:52" (3/4) ... [2023-11-21 21:01:06,589 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 21:01:06,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-21 21:01:06,594 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-21 21:01:06,594 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-21 21:01:06,601 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-21 21:01:06,601 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-21 21:01:06,601 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 21:01:06,602 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-21 21:01:06,690 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:01:06,691 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 21:01:06,691 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:01:06,692 INFO L158 Benchmark]: Toolchain (without parser) took 16054.95ms. Allocated memory was 165.7MB in the beginning and 780.1MB in the end (delta: 614.5MB). Free memory was 117.8MB in the beginning and 204.8MB in the end (delta: -87.0MB). Peak memory consumption was 529.5MB. Max. memory is 16.1GB. [2023-11-21 21:01:06,692 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:01:06,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 783.01ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 96.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 21:01:06,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.19ms. Allocated memory is still 165.7MB. Free memory was 96.8MB in the beginning and 94.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:01:06,693 INFO L158 Benchmark]: Boogie Preprocessor took 73.78ms. Allocated memory is still 165.7MB. Free memory was 94.7MB in the beginning and 93.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:01:06,694 INFO L158 Benchmark]: RCFGBuilder took 696.84ms. Allocated memory is still 165.7MB. Free memory was 93.1MB in the beginning and 130.8MB in the end (delta: -37.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 21:01:06,694 INFO L158 Benchmark]: TraceAbstraction took 14290.90ms. Allocated memory was 165.7MB in the beginning and 780.1MB in the end (delta: 614.5MB). Free memory was 130.8MB in the beginning and 209.0MB in the end (delta: -78.2MB). Peak memory consumption was 535.8MB. Max. memory is 16.1GB. [2023-11-21 21:01:06,695 INFO L158 Benchmark]: Witness Printer took 104.87ms. Allocated memory is still 780.1MB. Free memory was 209.0MB in the beginning and 204.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 21:01:06,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 783.01ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 96.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.19ms. Allocated memory is still 165.7MB. Free memory was 96.8MB in the beginning and 94.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.78ms. Allocated memory is still 165.7MB. Free memory was 94.7MB in the beginning and 93.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.84ms. Allocated memory is still 165.7MB. Free memory was 93.1MB in the beginning and 130.8MB in the end (delta: -37.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 14290.90ms. Allocated memory was 165.7MB in the beginning and 780.1MB in the end (delta: 614.5MB). Free memory was 130.8MB in the beginning and 209.0MB in the end (delta: -78.2MB). Peak memory consumption was 535.8MB. Max. memory is 16.1GB. * Witness Printer took 104.87ms. Allocated memory is still 780.1MB. Free memory was 209.0MB in the beginning and 204.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 75 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 854 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 713 mSDsluCounter, 339 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 249 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2105 IncrementalHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 90 mSDtfsCounter, 2105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=13, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 296 ConstructedInterpolants, 0 QuantifiedInterpolants, 2025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 21:01:06,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_720a24db-bd45-4a23-9a91-723433446534/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE