./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu --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 e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:09:39,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:09:39,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:09:39,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:09:39,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:09:39,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:09:39,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:09:39,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:09:39,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:09:39,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:09:39,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:09:39,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:09:39,656 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:09:39,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:09:39,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:09:39,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:09:39,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:09:39,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:09:39,666 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:09:39,666 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:09:39,667 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:09:39,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:09:39,668 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:09:39,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:09:39,669 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:09:39,669 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:09:39,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:09:39,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:09:39,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:09:39,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:09:39,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:09:39,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:09:39,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:09:39,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:09:39,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:09:39,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:09:39,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:09:39,676 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:09:39,676 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_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 [2023-11-19 07:09:39,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:09:40,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:09:40,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:09:40,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:09:40,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:09:40,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-19 07:09:43,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:09:43,440 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:09:43,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-19 07:09:43,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/data/982fe4dc8/0fbbe492376447d594c504dc824b8793/FLAG06a305f71 [2023-11-19 07:09:43,481 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/data/982fe4dc8/0fbbe492376447d594c504dc824b8793 [2023-11-19 07:09:43,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:09:43,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:09:43,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:09:43,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:09:43,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:09:43,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:43" (1/1) ... [2023-11-19 07:09:43,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3629d705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:43, skipping insertion in model container [2023-11-19 07:09:43,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:43" (1/1) ... [2023-11-19 07:09:43,564 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:09:44,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:09:44,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:09:44,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:09:44,263 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:09:44,263 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:09:44,271 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:09:44,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44 WrapperNode [2023-11-19 07:09:44,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:09:44,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:09:44,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:09:44,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:09:44,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,434 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-11-19 07:09:44,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:09:44,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:09:44,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:09:44,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:09:44,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:09:44,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:09:44,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:09:44,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:09:44,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (1/1) ... [2023-11-19 07:09:44,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:09:44,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:44,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:44,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ad92-1f17-4b18-bcbc-af5edbe166a4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:09:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:09:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:09:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:09:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:09:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:09:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:09:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:09:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:09:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:09:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:09:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:09:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:09:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:09:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:09:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:09:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:09:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:09:44,615 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:09:44,815 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:09:44,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:09:45,328 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:09:45,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:09:45,507 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:09:45,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:45 BoogieIcfgContainer [2023-11-19 07:09:45,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:09:45,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:09:45,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:09:45,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:09:45,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:09:43" (1/3) ... [2023-11-19 07:09:45,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20889fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:45, skipping insertion in model container [2023-11-19 07:09:45,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:44" (2/3) ... [2023-11-19 07:09:45,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20889fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:45, skipping insertion in model container [2023-11-19 07:09:45,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:45" (3/3) ... [2023-11-19 07:09:45,523 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2023-11-19 07:09:45,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:09:45,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:09:45,545 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:09:45,624 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:09:45,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 155 transitions, 326 flow [2023-11-19 07:09:45,782 INFO L124 PetriNetUnfolderBase]: 4/151 cut-off events. [2023-11-19 07:09:45,783 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:09:45,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 4/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:09:45,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 155 transitions, 326 flow [2023-11-19 07:09:45,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 151 transitions, 314 flow [2023-11-19 07:09:45,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:09:45,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 151 transitions, 314 flow [2023-11-19 07:09:45,823 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 151 transitions, 314 flow [2023-11-19 07:09:45,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 151 transitions, 314 flow [2023-11-19 07:09:45,868 INFO L124 PetriNetUnfolderBase]: 4/151 cut-off events. [2023-11-19 07:09:45,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:09:45,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 4/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 127 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:09:45,876 INFO L119 LiptonReduction]: Number of co-enabled transitions 4380 [2023-11-19 07:09:52,267 INFO L134 LiptonReduction]: Checked pairs total: 11745 [2023-11-19 07:09:52,267 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-19 07:09:52,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:09:52,294 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;@6b99eada, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:09:52,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:09:52,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:09:52,299 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:09:52,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:09:52,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:09:52,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:09:52,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:09:52,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash 668, now seen corresponding path program 1 times [2023-11-19 07:09:52,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221142391] [2023-11-19 07:09:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:52,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:52,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:52,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221142391] [2023-11-19 07:09:52,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221142391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:09:52,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:09:52,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:09:52,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794822236] [2023-11-19 07:09:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:09:52,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:09:52,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:09:52,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:09:52,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 305 [2023-11-19 07:09:52,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 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) [2023-11-19 07:09:52,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:09:52,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 305 [2023-11-19 07:09:52,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:09:55,183 INFO L124 PetriNetUnfolderBase]: 10487/14083 cut-off events. [2023-11-19 07:09:55,183 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 07:09:55,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28359 conditions, 14083 events. 10487/14083 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 72153 event pairs, 10487 based on Foata normal form. 0/12389 useless extension candidates. Maximal degree in co-relation 28347. Up to 14059 conditions per place. [2023-11-19 07:09:55,378 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-19 07:09:55,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 134 flow [2023-11-19 07:09:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:09:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:09:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 314 transitions. [2023-11-19 07:09:55,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147540983606558 [2023-11-19 07:09:55,401 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 314 transitions. [2023-11-19 07:09:55,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 314 transitions. [2023-11-19 07:09:55,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:09:55,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 314 transitions. [2023-11-19 07:09:55,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 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) [2023-11-19 07:09:55,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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) [2023-11-19 07:09:55,424 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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) [2023-11-19 07:09:55,427 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 314 transitions. [2023-11-19 07:09:55,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 134 flow [2023-11-19 07:09:55,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:09:55,440 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-19 07:09:55,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-19 07:09:55,447 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-19 07:09:55,448 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-19 07:09:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 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) [2023-11-19 07:09:55,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:09:55,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:09:55,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:09:55,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:09:55,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 656510, now seen corresponding path program 1 times [2023-11-19 07:09:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127364850] [2023-11-19 07:09:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:55,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:55,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127364850] [2023-11-19 07:09:55,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127364850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:09:55,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:09:55,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:09:55,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407204714] [2023-11-19 07:09:55,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:09:55,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:09:55,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:09:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:09:55,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 305 [2023-11-19 07:09:55,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-11-19 07:09:55,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:09:55,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 305 [2023-11-19 07:09:55,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:09:57,738 INFO L124 PetriNetUnfolderBase]: 8247/11291 cut-off events. [2023-11-19 07:09:57,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:09:57,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22568 conditions, 11291 events. 8247/11291 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 58450 event pairs, 3119 based on Foata normal form. 0/10519 useless extension candidates. Maximal degree in co-relation 22565. Up to 8863 conditions per place. [2023-11-19 07:09:57,825 INFO L140 encePairwiseOnDemand]: 302/305 looper letters, 47 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-19 07:09:57,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 224 flow [2023-11-19 07:09:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:09:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:09:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-11-19 07:09:57,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060109289617486 [2023-11-19 07:09:57,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-11-19 07:09:57,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-11-19 07:09:57,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:09:57,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-11-19 07:09:57,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-11-19 07:09:57,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-11-19 07:09:57,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-11-19 07:09:57,838 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 463 transitions. [2023-11-19 07:09:57,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 224 flow [2023-11-19 07:09:57,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:09:57,841 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-19 07:09:57,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-19 07:09:57,842 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-19 07:09:57,842 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-19 07:09:57,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-11-19 07:09:57,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:09:57,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:57,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:09:57,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:09:57,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:57,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1098067307, now seen corresponding path program 1 times [2023-11-19 07:09:57,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:57,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484196377] [2023-11-19 07:09:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:57,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484196377] [2023-11-19 07:09:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484196377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:09:58,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:09:58,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:09:58,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809427779] [2023-11-19 07:09:58,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:09:58,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:09:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:58,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:09:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:09:58,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 305 [2023-11-19 07:09:58,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 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) [2023-11-19 07:09:58,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:09:58,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 305 [2023-11-19 07:09:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:01,346 INFO L124 PetriNetUnfolderBase]: 16786/22315 cut-off events. [2023-11-19 07:10:01,346 INFO L125 PetriNetUnfolderBase]: For 1095/1095 co-relation queries the response was YES. [2023-11-19 07:10:01,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46043 conditions, 22315 events. 16786/22315 cut-off events. For 1095/1095 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 107731 event pairs, 8067 based on Foata normal form. 0/21581 useless extension candidates. Maximal degree in co-relation 46039. Up to 19635 conditions per place. [2023-11-19 07:10:01,481 INFO L140 encePairwiseOnDemand]: 297/305 looper letters, 62 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2023-11-19 07:10:01,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 320 flow [2023-11-19 07:10:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:10:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:10:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 711 transitions. [2023-11-19 07:10:01,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662295081967213 [2023-11-19 07:10:01,500 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 711 transitions. [2023-11-19 07:10:01,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 711 transitions. [2023-11-19 07:10:01,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:01,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 711 transitions. [2023-11-19 07:10:01,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 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) [2023-11-19 07:10:01,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:01,509 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:01,510 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 5 states and 711 transitions. [2023-11-19 07:10:01,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 320 flow [2023-11-19 07:10:01,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:10:01,513 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 156 flow [2023-11-19 07:10:01,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-19 07:10:01,515 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2023-11-19 07:10:01,516 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 156 flow [2023-11-19 07:10:01,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 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) [2023-11-19 07:10:01,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:01,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:10:01,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:10:01,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:01,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1098067277, now seen corresponding path program 1 times [2023-11-19 07:10:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:01,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102994118] [2023-11-19 07:10:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:01,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:02,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:02,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102994118] [2023-11-19 07:10:02,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102994118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:02,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:02,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:10:02,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097782574] [2023-11-19 07:10:02,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:02,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:10:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:02,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:10:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:10:02,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 305 [2023-11-19 07:10:02,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 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) [2023-11-19 07:10:02,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:02,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 305 [2023-11-19 07:10:02,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:05,075 INFO L124 PetriNetUnfolderBase]: 10425/14555 cut-off events. [2023-11-19 07:10:05,076 INFO L125 PetriNetUnfolderBase]: For 5348/5718 co-relation queries the response was YES. [2023-11-19 07:10:05,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33896 conditions, 14555 events. 10425/14555 cut-off events. For 5348/5718 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 80920 event pairs, 1900 based on Foata normal form. 1292/15416 useless extension candidates. Maximal degree in co-relation 33889. Up to 9481 conditions per place. [2023-11-19 07:10:05,195 INFO L140 encePairwiseOnDemand]: 299/305 looper letters, 52 selfloop transitions, 6 changer transitions 5/69 dead transitions. [2023-11-19 07:10:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 329 flow [2023-11-19 07:10:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:10:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:10:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 892 transitions. [2023-11-19 07:10:05,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41779859484777515 [2023-11-19 07:10:05,201 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 892 transitions. [2023-11-19 07:10:05,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 892 transitions. [2023-11-19 07:10:05,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:05,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 892 transitions. [2023-11-19 07:10:05,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.42857142857143) internal successors, (892), 7 states have internal predecessors, (892), 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) [2023-11-19 07:10:05,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:05,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:05,214 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 156 flow. Second operand 7 states and 892 transitions. [2023-11-19 07:10:05,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 329 flow [2023-11-19 07:10:05,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:10:05,240 INFO L231 Difference]: Finished difference. Result has 51 places, 33 transitions, 118 flow [2023-11-19 07:10:05,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2023-11-19 07:10:05,242 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-19 07:10:05,242 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 118 flow [2023-11-19 07:10:05,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 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) [2023-11-19 07:10:05,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:05,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:10:05,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:10:05,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:05,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1528122088, now seen corresponding path program 1 times [2023-11-19 07:10:05,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631760006] [2023-11-19 07:10:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:05,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631760006] [2023-11-19 07:10:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631760006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:05,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:05,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:10:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664773935] [2023-11-19 07:10:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:05,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:10:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:10:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:10:05,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 305 [2023-11-19 07:10:05,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 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) [2023-11-19 07:10:05,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:05,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 305 [2023-11-19 07:10:05,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:07,245 INFO L124 PetriNetUnfolderBase]: 9613/13386 cut-off events. [2023-11-19 07:10:07,245 INFO L125 PetriNetUnfolderBase]: For 5607/5881 co-relation queries the response was YES. [2023-11-19 07:10:07,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31263 conditions, 13386 events. 9613/13386 cut-off events. For 5607/5881 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 70168 event pairs, 2833 based on Foata normal form. 702/13733 useless extension candidates. Maximal degree in co-relation 31256. Up to 8103 conditions per place. [2023-11-19 07:10:07,355 INFO L140 encePairwiseOnDemand]: 301/305 looper letters, 35 selfloop transitions, 3 changer transitions 24/68 dead transitions. [2023-11-19 07:10:07,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 320 flow [2023-11-19 07:10:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:10:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:10:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-11-19 07:10:07,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48065573770491804 [2023-11-19 07:10:07,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-11-19 07:10:07,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-11-19 07:10:07,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:07,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-11-19 07:10:07,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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) [2023-11-19 07:10:07,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:07,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:07,370 INFO L175 Difference]: Start difference. First operand has 51 places, 33 transitions, 118 flow. Second operand 5 states and 733 transitions. [2023-11-19 07:10:07,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 320 flow [2023-11-19 07:10:07,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 307 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-19 07:10:07,466 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 121 flow [2023-11-19 07:10:07,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2023-11-19 07:10:07,467 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-19 07:10:07,468 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 121 flow [2023-11-19 07:10:07,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 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) [2023-11-19 07:10:07,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:07,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:10:07,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:10:07,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:07,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1283975154, now seen corresponding path program 1 times [2023-11-19 07:10:07,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:07,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830963252] [2023-11-19 07:10:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:07,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:07,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830963252] [2023-11-19 07:10:07,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830963252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:07,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:07,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:10:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260112091] [2023-11-19 07:10:07,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:07,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:10:07,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:10:07,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:10:07,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2023-11-19 07:10:07,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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) [2023-11-19 07:10:07,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:07,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2023-11-19 07:10:07,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:09,165 INFO L124 PetriNetUnfolderBase]: 6549/9484 cut-off events. [2023-11-19 07:10:09,165 INFO L125 PetriNetUnfolderBase]: For 4278/4517 co-relation queries the response was YES. [2023-11-19 07:10:09,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23079 conditions, 9484 events. 6549/9484 cut-off events. For 4278/4517 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 52848 event pairs, 1305 based on Foata normal form. 664/9887 useless extension candidates. Maximal degree in co-relation 23070. Up to 6101 conditions per place. [2023-11-19 07:10:09,239 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 67 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2023-11-19 07:10:09,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 83 transitions, 411 flow [2023-11-19 07:10:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:10:09,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:10:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2023-11-19 07:10:09,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2023-11-19 07:10:09,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2023-11-19 07:10:09,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2023-11-19 07:10:09,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:09,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2023-11-19 07:10:09,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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) [2023-11-19 07:10:09,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:09,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:09,252 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 121 flow. Second operand 5 states and 732 transitions. [2023-11-19 07:10:09,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 83 transitions, 411 flow [2023-11-19 07:10:09,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 83 transitions, 393 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-19 07:10:09,297 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 186 flow [2023-11-19 07:10:09,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-19 07:10:09,300 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-19 07:10:09,300 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 186 flow [2023-11-19 07:10:09,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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) [2023-11-19 07:10:09,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:09,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:10:09,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:10:09,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:09,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1961276857, now seen corresponding path program 1 times [2023-11-19 07:10:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:09,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232969872] [2023-11-19 07:10:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:09,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:09,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232969872] [2023-11-19 07:10:09,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232969872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:09,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:09,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:10:09,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882238522] [2023-11-19 07:10:09,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:09,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:10:09,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:09,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:10:09,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:10:09,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2023-11-19 07:10:09,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 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) [2023-11-19 07:10:09,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:09,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2023-11-19 07:10:09,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:10,612 INFO L124 PetriNetUnfolderBase]: 4694/7068 cut-off events. [2023-11-19 07:10:10,612 INFO L125 PetriNetUnfolderBase]: For 4021/4236 co-relation queries the response was YES. [2023-11-19 07:10:10,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20581 conditions, 7068 events. 4694/7068 cut-off events. For 4021/4236 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 40637 event pairs, 666 based on Foata normal form. 394/7277 useless extension candidates. Maximal degree in co-relation 20571. Up to 1998 conditions per place. [2023-11-19 07:10:10,666 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 91 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-11-19 07:10:10,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 116 transitions, 648 flow [2023-11-19 07:10:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:10:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:10:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2023-11-19 07:10:10,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810304449648712 [2023-11-19 07:10:10,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2023-11-19 07:10:10,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2023-11-19 07:10:10,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:10,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2023-11-19 07:10:10,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 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) [2023-11-19 07:10:10,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:10,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:10,685 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 186 flow. Second operand 7 states and 1027 transitions. [2023-11-19 07:10:10,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 116 transitions, 648 flow [2023-11-19 07:10:10,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:10:10,723 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 315 flow [2023-11-19 07:10:10,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-19 07:10:10,724 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-11-19 07:10:10,724 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 315 flow [2023-11-19 07:10:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 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) [2023-11-19 07:10:10,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:10,725 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] [2023-11-19 07:10:10,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:10:10,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:10,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:10,726 INFO L85 PathProgramCache]: Analyzing trace with hash -863349013, now seen corresponding path program 1 times [2023-11-19 07:10:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888692132] [2023-11-19 07:10:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:10,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:11,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888692132] [2023-11-19 07:10:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888692132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:11,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:11,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:10:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103623678] [2023-11-19 07:10:11,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:11,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:10:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:11,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:10:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:10:11,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 305 [2023-11-19 07:10:11,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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) [2023-11-19 07:10:11,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:11,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 305 [2023-11-19 07:10:11,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:14,124 INFO L124 PetriNetUnfolderBase]: 10907/16005 cut-off events. [2023-11-19 07:10:14,124 INFO L125 PetriNetUnfolderBase]: For 35285/35285 co-relation queries the response was YES. [2023-11-19 07:10:14,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59453 conditions, 16005 events. 10907/16005 cut-off events. For 35285/35285 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 93974 event pairs, 1164 based on Foata normal form. 96/16101 useless extension candidates. Maximal degree in co-relation 59440. Up to 6930 conditions per place. [2023-11-19 07:10:14,224 INFO L140 encePairwiseOnDemand]: 292/305 looper letters, 140 selfloop transitions, 25 changer transitions 76/241 dead transitions. [2023-11-19 07:10:14,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 241 transitions, 2000 flow [2023-11-19 07:10:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:10:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:10:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1498 transitions. [2023-11-19 07:10:14,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4464977645305514 [2023-11-19 07:10:14,232 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1498 transitions. [2023-11-19 07:10:14,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1498 transitions. [2023-11-19 07:10:14,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:14,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1498 transitions. [2023-11-19 07:10:14,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.1818181818182) internal successors, (1498), 11 states have internal predecessors, (1498), 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) [2023-11-19 07:10:14,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 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) [2023-11-19 07:10:14,249 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 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) [2023-11-19 07:10:14,249 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 315 flow. Second operand 11 states and 1498 transitions. [2023-11-19 07:10:14,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 241 transitions, 2000 flow [2023-11-19 07:10:15,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 241 transitions, 1767 flow, removed 81 selfloop flow, removed 3 redundant places. [2023-11-19 07:10:15,169 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 417 flow [2023-11-19 07:10:15,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=417, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-11-19 07:10:15,170 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-11-19 07:10:15,170 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 417 flow [2023-11-19 07:10:15,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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) [2023-11-19 07:10:15,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:15,171 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] [2023-11-19 07:10:15,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:10:15,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:15,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash -570709965, now seen corresponding path program 2 times [2023-11-19 07:10:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806403984] [2023-11-19 07:10:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:15,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:15,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806403984] [2023-11-19 07:10:15,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806403984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:15,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:15,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:10:15,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331355541] [2023-11-19 07:10:15,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:10:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:10:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:10:15,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2023-11-19 07:10:15,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 417 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 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) [2023-11-19 07:10:15,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:15,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2023-11-19 07:10:15,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:16,499 INFO L124 PetriNetUnfolderBase]: 3548/5616 cut-off events. [2023-11-19 07:10:16,499 INFO L125 PetriNetUnfolderBase]: For 11561/11922 co-relation queries the response was YES. [2023-11-19 07:10:16,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20221 conditions, 5616 events. 3548/5616 cut-off events. For 11561/11922 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 33256 event pairs, 593 based on Foata normal form. 395/5855 useless extension candidates. Maximal degree in co-relation 20201. Up to 1916 conditions per place. [2023-11-19 07:10:16,540 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 121 selfloop transitions, 18 changer transitions 33/184 dead transitions. [2023-11-19 07:10:16,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 184 transitions, 1348 flow [2023-11-19 07:10:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:10:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:10:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1028 transitions. [2023-11-19 07:10:16,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48149882903981267 [2023-11-19 07:10:16,544 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1028 transitions. [2023-11-19 07:10:16,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1028 transitions. [2023-11-19 07:10:16,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:16,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1028 transitions. [2023-11-19 07:10:16,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.85714285714286) internal successors, (1028), 7 states have internal predecessors, (1028), 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) [2023-11-19 07:10:16,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:16,554 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:16,555 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 417 flow. Second operand 7 states and 1028 transitions. [2023-11-19 07:10:16,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 184 transitions, 1348 flow [2023-11-19 07:10:16,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 184 transitions, 1263 flow, removed 42 selfloop flow, removed 7 redundant places. [2023-11-19 07:10:16,589 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 502 flow [2023-11-19 07:10:16,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-11-19 07:10:16,590 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-11-19 07:10:16,590 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 502 flow [2023-11-19 07:10:16,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 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) [2023-11-19 07:10:16,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:16,591 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] [2023-11-19 07:10:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:10:16,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:16,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1706199410, now seen corresponding path program 1 times [2023-11-19 07:10:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:16,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034842704] [2023-11-19 07:10:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:16,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034842704] [2023-11-19 07:10:16,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034842704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:16,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:16,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:10:16,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794276770] [2023-11-19 07:10:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:16,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:10:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:16,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:10:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:10:16,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 305 [2023-11-19 07:10:16,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 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) [2023-11-19 07:10:16,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:16,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 305 [2023-11-19 07:10:16,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:18,498 INFO L124 PetriNetUnfolderBase]: 6214/9486 cut-off events. [2023-11-19 07:10:18,498 INFO L125 PetriNetUnfolderBase]: For 25669/25669 co-relation queries the response was YES. [2023-11-19 07:10:18,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39388 conditions, 9486 events. 6214/9486 cut-off events. For 25669/25669 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 54483 event pairs, 1280 based on Foata normal form. 16/9502 useless extension candidates. Maximal degree in co-relation 39371. Up to 4394 conditions per place. [2023-11-19 07:10:18,567 INFO L140 encePairwiseOnDemand]: 297/305 looper letters, 110 selfloop transitions, 15 changer transitions 74/199 dead transitions. [2023-11-19 07:10:18,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 199 transitions, 1762 flow [2023-11-19 07:10:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:10:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:10:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 984 transitions. [2023-11-19 07:10:18,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46088992974238874 [2023-11-19 07:10:18,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 984 transitions. [2023-11-19 07:10:18,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 984 transitions. [2023-11-19 07:10:18,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:18,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 984 transitions. [2023-11-19 07:10:18,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.57142857142858) internal successors, (984), 7 states have internal predecessors, (984), 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) [2023-11-19 07:10:18,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:18,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 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) [2023-11-19 07:10:18,585 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 502 flow. Second operand 7 states and 984 transitions. [2023-11-19 07:10:18,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 199 transitions, 1762 flow [2023-11-19 07:10:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 199 transitions, 1584 flow, removed 72 selfloop flow, removed 2 redundant places. [2023-11-19 07:10:18,898 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 492 flow [2023-11-19 07:10:18,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-11-19 07:10:18,899 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2023-11-19 07:10:18,900 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 492 flow [2023-11-19 07:10:18,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 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) [2023-11-19 07:10:18,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:18,900 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] [2023-11-19 07:10:18,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:10:18,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:18,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:18,902 INFO L85 PathProgramCache]: Analyzing trace with hash 399565016, now seen corresponding path program 2 times [2023-11-19 07:10:18,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:18,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914971461] [2023-11-19 07:10:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:18,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:19,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:19,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914971461] [2023-11-19 07:10:19,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914971461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:19,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:19,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:10:19,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458928583] [2023-11-19 07:10:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:19,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:10:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:10:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:10:19,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2023-11-19 07:10:19,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 492 flow. Second operand has 7 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 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) [2023-11-19 07:10:19,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:19,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2023-11-19 07:10:19,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:20,769 INFO L124 PetriNetUnfolderBase]: 4114/6439 cut-off events. [2023-11-19 07:10:20,770 INFO L125 PetriNetUnfolderBase]: For 9668/10070 co-relation queries the response was YES. [2023-11-19 07:10:20,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23168 conditions, 6439 events. 4114/6439 cut-off events. For 9668/10070 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 39508 event pairs, 682 based on Foata normal form. 149/6359 useless extension candidates. Maximal degree in co-relation 23147. Up to 2621 conditions per place. [2023-11-19 07:10:20,815 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 91 selfloop transitions, 18 changer transitions 36/155 dead transitions. [2023-11-19 07:10:20,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 155 transitions, 1161 flow [2023-11-19 07:10:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:10:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:10:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1145 transitions. [2023-11-19 07:10:20,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692622950819672 [2023-11-19 07:10:20,821 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1145 transitions. [2023-11-19 07:10:20,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1145 transitions. [2023-11-19 07:10:20,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:20,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1145 transitions. [2023-11-19 07:10:20,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 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) [2023-11-19 07:10:20,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-11-19 07:10:20,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-11-19 07:10:20,833 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 492 flow. Second operand 8 states and 1145 transitions. [2023-11-19 07:10:20,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 155 transitions, 1161 flow [2023-11-19 07:10:21,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 155 transitions, 1097 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-19 07:10:21,072 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 398 flow [2023-11-19 07:10:21,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=398, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2023-11-19 07:10:21,074 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-11-19 07:10:21,074 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 398 flow [2023-11-19 07:10:21,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 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) [2023-11-19 07:10:21,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:21,075 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] [2023-11-19 07:10:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:10:21,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:21,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash -868828322, now seen corresponding path program 1 times [2023-11-19 07:10:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675334759] [2023-11-19 07:10:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:21,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:21,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675334759] [2023-11-19 07:10:21,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675334759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:21,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:21,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:10:21,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734359737] [2023-11-19 07:10:21,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:21,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:10:21,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:10:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:10:21,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2023-11-19 07:10:21,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 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) [2023-11-19 07:10:21,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:21,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2023-11-19 07:10:21,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:22,360 INFO L124 PetriNetUnfolderBase]: 3165/5098 cut-off events. [2023-11-19 07:10:22,360 INFO L125 PetriNetUnfolderBase]: For 12750/12762 co-relation queries the response was YES. [2023-11-19 07:10:22,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20226 conditions, 5098 events. 3165/5098 cut-off events. For 12750/12762 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 30162 event pairs, 539 based on Foata normal form. 10/5102 useless extension candidates. Maximal degree in co-relation 20205. Up to 2327 conditions per place. [2023-11-19 07:10:22,400 INFO L140 encePairwiseOnDemand]: 301/305 looper letters, 77 selfloop transitions, 1 changer transitions 43/128 dead transitions. [2023-11-19 07:10:22,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 128 transitions, 1090 flow [2023-11-19 07:10:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:10:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:10:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 720 transitions. [2023-11-19 07:10:22,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721311475409836 [2023-11-19 07:10:22,404 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 720 transitions. [2023-11-19 07:10:22,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 720 transitions. [2023-11-19 07:10:22,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:22,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 720 transitions. [2023-11-19 07:10:22,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-19 07:10:22,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:22,412 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-11-19 07:10:22,413 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 398 flow. Second operand 5 states and 720 transitions. [2023-11-19 07:10:22,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 128 transitions, 1090 flow [2023-11-19 07:10:22,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 128 transitions, 917 flow, removed 48 selfloop flow, removed 9 redundant places. [2023-11-19 07:10:22,486 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 319 flow [2023-11-19 07:10:22,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-11-19 07:10:22,487 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2023-11-19 07:10:22,487 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 319 flow [2023-11-19 07:10:22,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 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) [2023-11-19 07:10:22,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:22,488 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] [2023-11-19 07:10:22,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:10:22,488 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:22,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1676416304, now seen corresponding path program 2 times [2023-11-19 07:10:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827248978] [2023-11-19 07:10:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:23,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827248978] [2023-11-19 07:10:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827248978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:23,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:23,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:10:23,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754366033] [2023-11-19 07:10:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:23,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:10:23,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:10:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:10:23,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 305 [2023-11-19 07:10:23,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 319 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 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) [2023-11-19 07:10:23,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:23,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 305 [2023-11-19 07:10:23,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:10:25,032 INFO L124 PetriNetUnfolderBase]: 4522/7336 cut-off events. [2023-11-19 07:10:25,032 INFO L125 PetriNetUnfolderBase]: For 12252/12252 co-relation queries the response was YES. [2023-11-19 07:10:25,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26079 conditions, 7336 events. 4522/7336 cut-off events. For 12252/12252 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45937 event pairs, 412 based on Foata normal form. 3/7339 useless extension candidates. Maximal degree in co-relation 26060. Up to 1415 conditions per place. [2023-11-19 07:10:25,057 INFO L140 encePairwiseOnDemand]: 293/305 looper letters, 198 selfloop transitions, 37 changer transitions 104/339 dead transitions. [2023-11-19 07:10:25,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 339 transitions, 2479 flow [2023-11-19 07:10:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:10:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-19 07:10:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2394 transitions. [2023-11-19 07:10:25,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360655737704918 [2023-11-19 07:10:25,067 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2394 transitions. [2023-11-19 07:10:25,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2394 transitions. [2023-11-19 07:10:25,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:10:25,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2394 transitions. [2023-11-19 07:10:25,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.0) internal successors, (2394), 18 states have internal predecessors, (2394), 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) [2023-11-19 07:10:25,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 305.0) internal successors, (5795), 19 states have internal predecessors, (5795), 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) [2023-11-19 07:10:25,085 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 305.0) internal successors, (5795), 19 states have internal predecessors, (5795), 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) [2023-11-19 07:10:25,085 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 319 flow. Second operand 18 states and 2394 transitions. [2023-11-19 07:10:25,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 339 transitions, 2479 flow [2023-11-19 07:10:25,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 339 transitions, 2451 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-19 07:10:25,267 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 588 flow [2023-11-19 07:10:25,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=588, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2023-11-19 07:10:25,268 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2023-11-19 07:10:25,268 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 588 flow [2023-11-19 07:10:25,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 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) [2023-11-19 07:10:25,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:10:25,270 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] [2023-11-19 07:10:25,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:10:25,271 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:10:25,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:10:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1734754646, now seen corresponding path program 3 times [2023-11-19 07:10:25,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:10:25,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978496528] [2023-11-19 07:10:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:10:25,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:10:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:10:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:10:26,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:10:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978496528] [2023-11-19 07:10:26,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978496528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:10:26,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:10:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:10:26,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100880987] [2023-11-19 07:10:26,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:10:26,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:10:26,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:10:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:10:26,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:10:26,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 305 [2023-11-19 07:10:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 588 flow. Second operand has 9 states, 9 states have (on average 132.88888888888889) internal successors, (1196), 9 states have internal predecessors, (1196), 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) [2023-11-19 07:10:26,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:10:26,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 305 [2023-11-19 07:10:26,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand