./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_tso.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_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/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_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/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_7b6f587b-849a-4969-885b-32195326706f/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 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:30,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:30,689 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:47:30,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:30,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:30,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:30,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:30,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:30,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:30,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:30,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:30,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:30,748 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:30,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:30,750 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:30,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:30,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:30,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:30,752 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:47:30,753 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:47:30,753 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:47:30,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:30,754 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:47:30,755 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:30,755 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:30,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:30,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:30,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:30,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:30,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:30,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:30,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:30,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:30,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:30,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:30,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:30,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:30,761 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:30,761 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_7b6f587b-849a-4969-885b-32195326706f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 [2023-11-19 07:47:31,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:31,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:31,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:31,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:31,142 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:31,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2023-11-19 07:47:34,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:34,624 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:34,625 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2023-11-19 07:47:34,646 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/data/aedc6e9f3/cfacc688f26b43ffa6ec56a0ed300e18/FLAG58f094c71 [2023-11-19 07:47:34,661 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/data/aedc6e9f3/cfacc688f26b43ffa6ec56a0ed300e18 [2023-11-19 07:47:34,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:34,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:34,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:34,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:34,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:34,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd5cde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34, skipping insertion in model container [2023-11-19 07:47:34,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:35,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:35,292 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:35,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:35,438 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:35,438 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:35,446 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:35,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35 WrapperNode [2023-11-19 07:47:35,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:35,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:35,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:35,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:35,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,533 INFO L138 Inliner]: procedures = 177, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 271 [2023-11-19 07:47:35,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:35,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:35,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:35,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:35,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:35,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:35,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:35,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:35,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:35,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:35,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:35,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f587b-849a-4969-885b-32195326706f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:47:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:47:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:47:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:47:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:35,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:35,704 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 07:47:35,929 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:35,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:36,504 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:36,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:36,851 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:47:36,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:36 BoogieIcfgContainer [2023-11-19 07:47:36,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:36,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:36,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:36,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:36,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:34" (1/3) ... [2023-11-19 07:47:36,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d1d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:36, skipping insertion in model container [2023-11-19 07:47:36,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (2/3) ... [2023-11-19 07:47:36,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d1d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:36, skipping insertion in model container [2023-11-19 07:47:36,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:36" (3/3) ... [2023-11-19 07:47:36,872 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_tso.oepc.i [2023-11-19 07:47:36,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:36,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:47:36,895 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:36,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:47:37,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 174 transitions, 364 flow [2023-11-19 07:47:37,179 INFO L124 PetriNetUnfolderBase]: 5/170 cut-off events. [2023-11-19 07:47:37,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:37,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 170 events. 5/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-11-19 07:47:37,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 174 transitions, 364 flow [2023-11-19 07:47:37,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 170 transitions, 352 flow [2023-11-19 07:47:37,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:37,227 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 170 transitions, 352 flow [2023-11-19 07:47:37,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 170 transitions, 352 flow [2023-11-19 07:47:37,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 170 transitions, 352 flow [2023-11-19 07:47:37,298 INFO L124 PetriNetUnfolderBase]: 5/170 cut-off events. [2023-11-19 07:47:37,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:37,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 170 events. 5/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-11-19 07:47:37,306 INFO L119 LiptonReduction]: Number of co-enabled transitions 4686 [2023-11-19 07:47:46,217 INFO L134 LiptonReduction]: Checked pairs total: 13655 [2023-11-19 07:47:46,217 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-11-19 07:47:46,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:46,242 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;@2e933001, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:46,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 07:47:46,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:46,244 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:47:46,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:46,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:46,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:47:46,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:47:46,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash 882, now seen corresponding path program 1 times [2023-11-19 07:47:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949917366] [2023-11-19 07:47:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:46,415 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 07:47:46,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:46,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949917366] [2023-11-19 07:47:46,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949917366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:46,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:47:46,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849539345] [2023-11-19 07:47:46,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:46,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:46,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 337 [2023-11-19 07:47:46,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 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 07:47:46,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:46,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 337 [2023-11-19 07:47:46,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:50,066 INFO L124 PetriNetUnfolderBase]: 12587/17254 cut-off events. [2023-11-19 07:47:50,066 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-19 07:47:50,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34458 conditions, 17254 events. 12587/17254 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 95667 event pairs, 12587 based on Foata normal form. 0/14345 useless extension candidates. Maximal degree in co-relation 34446. Up to 16853 conditions per place. [2023-11-19 07:47:50,278 INFO L140 encePairwiseOnDemand]: 328/337 looper letters, 30 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2023-11-19 07:47:50,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 140 flow [2023-11-19 07:47:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:47:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 343 transitions. [2023-11-19 07:47:50,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089020771513353 [2023-11-19 07:47:50,302 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 343 transitions. [2023-11-19 07:47:50,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 343 transitions. [2023-11-19 07:47:50,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:50,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 343 transitions. [2023-11-19 07:47:50,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 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 07:47:50,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 07:47:50,321 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 07:47:50,323 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 2 states and 343 transitions. [2023-11-19 07:47:50,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 140 flow [2023-11-19 07:47:50,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:47:50,349 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 76 flow [2023-11-19 07:47:50,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-19 07:47:50,354 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -11 predicate places. [2023-11-19 07:47:50,355 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 76 flow [2023-11-19 07:47:50,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 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 07:47:50,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:50,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:50,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:50,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:47:50,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:50,358 INFO L85 PathProgramCache]: Analyzing trace with hash 833818300, now seen corresponding path program 1 times [2023-11-19 07:47:50,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:50,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462877014] [2023-11-19 07:47:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:50,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:50,795 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 07:47:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:50,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462877014] [2023-11-19 07:47:50,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462877014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:50,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:50,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249469019] [2023-11-19 07:47:50,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:50,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:50,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 337 [2023-11-19 07:47:50,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 07:47:50,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:50,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 337 [2023-11-19 07:47:50,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:53,649 INFO L124 PetriNetUnfolderBase]: 10703/14430 cut-off events. [2023-11-19 07:47:53,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:53,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29091 conditions, 14430 events. 10703/14430 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 81869 event pairs, 1283 based on Foata normal form. 0/12645 useless extension candidates. Maximal degree in co-relation 29088. Up to 12461 conditions per place. [2023-11-19 07:47:53,747 INFO L140 encePairwiseOnDemand]: 334/337 looper letters, 47 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-19 07:47:53,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 216 flow [2023-11-19 07:47:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-11-19 07:47:53,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49752720079129575 [2023-11-19 07:47:53,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-11-19 07:47:53,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-11-19 07:47:53,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:53,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-11-19 07:47:53,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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 07:47:53,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 07:47:53,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 07:47:53,768 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 76 flow. Second operand 3 states and 503 transitions. [2023-11-19 07:47:53,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 216 flow [2023-11-19 07:47:53,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:53,772 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 78 flow [2023-11-19 07:47:53,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2023-11-19 07:47:53,774 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2023-11-19 07:47:53,774 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 78 flow [2023-11-19 07:47:53,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 07:47:53,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:53,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:53,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:47:53,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1859411728, now seen corresponding path program 1 times [2023-11-19 07:47:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:53,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217627565] [2023-11-19 07:47:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,962 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 07:47:53,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:53,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217627565] [2023-11-19 07:47:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217627565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:53,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:53,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107157411] [2023-11-19 07:47:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:53,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:53,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 337 [2023-11-19 07:47:53,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 07:47:53,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:53,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 337 [2023-11-19 07:47:53,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:56,155 INFO L124 PetriNetUnfolderBase]: 8435/12190 cut-off events. [2023-11-19 07:47:56,156 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2023-11-19 07:47:56,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24305 conditions, 12190 events. 8435/12190 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 73552 event pairs, 1631 based on Foata normal form. 0/11349 useless extension candidates. Maximal degree in co-relation 24301. Up to 8965 conditions per place. [2023-11-19 07:47:56,260 INFO L140 encePairwiseOnDemand]: 334/337 looper letters, 43 selfloop transitions, 2 changer transitions 2/51 dead transitions. [2023-11-19 07:47:56,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 212 flow [2023-11-19 07:47:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-11-19 07:47:56,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49554896142433236 [2023-11-19 07:47:56,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-11-19 07:47:56,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-11-19 07:47:56,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:56,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-11-19 07:47:56,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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 07:47:56,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 07:47:56,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 07:47:56,275 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 78 flow. Second operand 3 states and 501 transitions. [2023-11-19 07:47:56,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 212 flow [2023-11-19 07:47:56,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:56,279 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 74 flow [2023-11-19 07:47:56,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-11-19 07:47:56,280 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -11 predicate places. [2023-11-19 07:47:56,281 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 74 flow [2023-11-19 07:47:56,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 07:47:56,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:56,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:56,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:47:56,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,284 INFO L85 PathProgramCache]: Analyzing trace with hash -917427951, now seen corresponding path program 1 times [2023-11-19 07:47:56,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55318297] [2023-11-19 07:47:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:57,173 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 07:47:57,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:57,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55318297] [2023-11-19 07:47:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55318297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:57,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:57,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:57,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130981537] [2023-11-19 07:47:57,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:57,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:57,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:57,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 337 [2023-11-19 07:47:57,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 74 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 07:47:57,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:57,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 337 [2023-11-19 07:47:57,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:00,338 INFO L124 PetriNetUnfolderBase]: 14523/19382 cut-off events. [2023-11-19 07:48:00,338 INFO L125 PetriNetUnfolderBase]: For 954/954 co-relation queries the response was YES. [2023-11-19 07:48:00,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40025 conditions, 19382 events. 14523/19382 cut-off events. For 954/954 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 100344 event pairs, 3439 based on Foata normal form. 0/18901 useless extension candidates. Maximal degree in co-relation 40021. Up to 13041 conditions per place. [2023-11-19 07:48:00,440 INFO L140 encePairwiseOnDemand]: 332/337 looper letters, 74 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-11-19 07:48:00,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 344 flow [2023-11-19 07:48:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 757 transitions. [2023-11-19 07:48:00,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44925816023738874 [2023-11-19 07:48:00,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 757 transitions. [2023-11-19 07:48:00,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 757 transitions. [2023-11-19 07:48:00,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:00,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 757 transitions. [2023-11-19 07:48:00,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 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 07:48:00,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:00,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:00,462 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 74 flow. Second operand 5 states and 757 transitions. [2023-11-19 07:48:00,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 344 flow [2023-11-19 07:48:00,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:00,468 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 107 flow [2023-11-19 07:48:00,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-11-19 07:48:00,470 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2023-11-19 07:48:00,470 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 107 flow [2023-11-19 07:48:00,471 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 07:48:00,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:00,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:00,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:48:00,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:00,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -917427930, now seen corresponding path program 1 times [2023-11-19 07:48:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424540859] [2023-11-19 07:48:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:00,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:01,381 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 07:48:01,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:01,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424540859] [2023-11-19 07:48:01,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424540859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:01,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:01,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:01,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237970135] [2023-11-19 07:48:01,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:01,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:01,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:01,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:01,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 337 [2023-11-19 07:48:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 107 flow. Second operand has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 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 07:48:01,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:01,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 337 [2023-11-19 07:48:01,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:03,447 INFO L124 PetriNetUnfolderBase]: 7699/11045 cut-off events. [2023-11-19 07:48:03,448 INFO L125 PetriNetUnfolderBase]: For 2470/2470 co-relation queries the response was YES. [2023-11-19 07:48:03,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23811 conditions, 11045 events. 7699/11045 cut-off events. For 2470/2470 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 62848 event pairs, 428 based on Foata normal form. 800/11845 useless extension candidates. Maximal degree in co-relation 23804. Up to 6144 conditions per place. [2023-11-19 07:48:03,526 INFO L140 encePairwiseOnDemand]: 331/337 looper letters, 59 selfloop transitions, 5 changer transitions 4/71 dead transitions. [2023-11-19 07:48:03,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 329 flow [2023-11-19 07:48:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 997 transitions. [2023-11-19 07:48:03,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42263671047053836 [2023-11-19 07:48:03,532 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 997 transitions. [2023-11-19 07:48:03,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 997 transitions. [2023-11-19 07:48:03,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:03,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 997 transitions. [2023-11-19 07:48:03,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 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 07:48:03,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 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 07:48:03,545 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 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 07:48:03,545 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 107 flow. Second operand 7 states and 997 transitions. [2023-11-19 07:48:03,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 329 flow [2023-11-19 07:48:03,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:03,550 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 88 flow [2023-11-19 07:48:03,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2023-11-19 07:48:03,551 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2023-11-19 07:48:03,552 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 88 flow [2023-11-19 07:48:03,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 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 07:48:03,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:03,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:03,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:48:03,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:03,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,554 INFO L85 PathProgramCache]: Analyzing trace with hash -145477399, now seen corresponding path program 1 times [2023-11-19 07:48:03,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:03,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690649186] [2023-11-19 07:48:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:04,206 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 07:48:04,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:04,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690649186] [2023-11-19 07:48:04,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690649186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:04,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:04,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829270973] [2023-11-19 07:48:04,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:04,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:04,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 337 [2023-11-19 07:48:04,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 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 07:48:04,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:04,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 337 [2023-11-19 07:48:04,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:06,388 INFO L124 PetriNetUnfolderBase]: 10019/13598 cut-off events. [2023-11-19 07:48:06,389 INFO L125 PetriNetUnfolderBase]: For 2580/2580 co-relation queries the response was YES. [2023-11-19 07:48:06,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29617 conditions, 13598 events. 10019/13598 cut-off events. For 2580/2580 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 66229 event pairs, 2971 based on Foata normal form. 480/14077 useless extension candidates. Maximal degree in co-relation 29610. Up to 8425 conditions per place. [2023-11-19 07:48:06,471 INFO L140 encePairwiseOnDemand]: 333/337 looper letters, 41 selfloop transitions, 2 changer transitions 26/70 dead transitions. [2023-11-19 07:48:06,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 312 flow [2023-11-19 07:48:06,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2023-11-19 07:48:06,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427299703264095 [2023-11-19 07:48:06,476 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2023-11-19 07:48:06,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2023-11-19 07:48:06,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:06,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2023-11-19 07:48:06,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 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 07:48:06,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:06,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:06,485 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 88 flow. Second operand 5 states and 746 transitions. [2023-11-19 07:48:06,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 312 flow [2023-11-19 07:48:06,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 295 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-19 07:48:06,597 INFO L231 Difference]: Finished difference. Result has 49 places, 30 transitions, 85 flow [2023-11-19 07:48:06,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=30} [2023-11-19 07:48:06,600 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2023-11-19 07:48:06,603 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 30 transitions, 85 flow [2023-11-19 07:48:06,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 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 07:48:06,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:06,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:06,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:48:06,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:06,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1563331306, now seen corresponding path program 1 times [2023-11-19 07:48:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:06,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516818588] [2023-11-19 07:48:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:07,080 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 07:48:07,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:07,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516818588] [2023-11-19 07:48:07,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516818588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:07,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:07,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656368542] [2023-11-19 07:48:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:07,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:07,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:07,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 337 [2023-11-19 07:48:07,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 30 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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 07:48:07,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:07,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 337 [2023-11-19 07:48:07,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:08,409 INFO L124 PetriNetUnfolderBase]: 4242/6134 cut-off events. [2023-11-19 07:48:08,410 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-11-19 07:48:08,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13355 conditions, 6134 events. 4242/6134 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32547 event pairs, 864 based on Foata normal form. 384/6435 useless extension candidates. Maximal degree in co-relation 13347. Up to 3969 conditions per place. [2023-11-19 07:48:08,450 INFO L140 encePairwiseOnDemand]: 330/337 looper letters, 41 selfloop transitions, 5 changer transitions 29/79 dead transitions. [2023-11-19 07:48:08,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 342 flow [2023-11-19 07:48:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 802 transitions. [2023-11-19 07:48:08,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47596439169139465 [2023-11-19 07:48:08,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 802 transitions. [2023-11-19 07:48:08,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 802 transitions. [2023-11-19 07:48:08,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:08,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 802 transitions. [2023-11-19 07:48:08,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.4) internal successors, (802), 5 states have internal predecessors, (802), 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 07:48:08,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:08,465 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:08,465 INFO L175 Difference]: Start difference. First operand has 49 places, 30 transitions, 85 flow. Second operand 5 states and 802 transitions. [2023-11-19 07:48:08,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 79 transitions, 342 flow [2023-11-19 07:48:08,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 79 transitions, 334 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:08,482 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 122 flow [2023-11-19 07:48:08,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-11-19 07:48:08,483 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2023-11-19 07:48:08,483 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 122 flow [2023-11-19 07:48:08,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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 07:48:08,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:08,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:08,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:48:08,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:08,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1882806100, now seen corresponding path program 1 times [2023-11-19 07:48:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:08,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077556557] [2023-11-19 07:48:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:08,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:08,982 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 07:48:08,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:08,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077556557] [2023-11-19 07:48:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077556557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578121476] [2023-11-19 07:48:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:08,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:09,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 337 [2023-11-19 07:48:09,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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 07:48:09,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:09,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 337 [2023-11-19 07:48:09,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:10,081 INFO L124 PetriNetUnfolderBase]: 2406/3677 cut-off events. [2023-11-19 07:48:10,081 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2023-11-19 07:48:10,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10017 conditions, 3677 events. 2406/3677 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19278 event pairs, 544 based on Foata normal form. 249/3891 useless extension candidates. Maximal degree in co-relation 10008. Up to 1205 conditions per place. [2023-11-19 07:48:10,105 INFO L140 encePairwiseOnDemand]: 330/337 looper letters, 55 selfloop transitions, 9 changer transitions 29/97 dead transitions. [2023-11-19 07:48:10,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 97 transitions, 498 flow [2023-11-19 07:48:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 965 transitions. [2023-11-19 07:48:10,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772502472799209 [2023-11-19 07:48:10,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 965 transitions. [2023-11-19 07:48:10,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 965 transitions. [2023-11-19 07:48:10,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:10,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 965 transitions. [2023-11-19 07:48:10,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 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 07:48:10,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 07:48:10,122 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 07:48:10,122 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 122 flow. Second operand 6 states and 965 transitions. [2023-11-19 07:48:10,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 97 transitions, 498 flow [2023-11-19 07:48:10,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 97 transitions, 491 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:10,135 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 187 flow [2023-11-19 07:48:10,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-11-19 07:48:10,136 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-11-19 07:48:10,137 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 187 flow [2023-11-19 07:48:10,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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 07:48:10,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:10,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:10,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:48:10,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:10,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash -371133494, now seen corresponding path program 1 times [2023-11-19 07:48:10,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:10,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866599353] [2023-11-19 07:48:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:10,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:10,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866599353] [2023-11-19 07:48:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866599353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:10,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:10,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443056046] [2023-11-19 07:48:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:10,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:10,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 337 [2023-11-19 07:48:10,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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 07:48:10,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:10,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 337 [2023-11-19 07:48:10,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:11,601 INFO L124 PetriNetUnfolderBase]: 1524/2399 cut-off events. [2023-11-19 07:48:11,602 INFO L125 PetriNetUnfolderBase]: For 2039/2039 co-relation queries the response was YES. [2023-11-19 07:48:11,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 2399 events. 1524/2399 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 12048 event pairs, 488 based on Foata normal form. 87/2461 useless extension candidates. Maximal degree in co-relation 7138. Up to 820 conditions per place. [2023-11-19 07:48:11,619 INFO L140 encePairwiseOnDemand]: 330/337 looper letters, 67 selfloop transitions, 13 changer transitions 29/113 dead transitions. [2023-11-19 07:48:11,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 113 transitions, 672 flow [2023-11-19 07:48:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1126 transitions. [2023-11-19 07:48:11,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47732089868588384 [2023-11-19 07:48:11,625 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1126 transitions. [2023-11-19 07:48:11,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1126 transitions. [2023-11-19 07:48:11,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:11,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1126 transitions. [2023-11-19 07:48:11,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.85714285714286) internal successors, (1126), 7 states have internal predecessors, (1126), 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 07:48:11,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 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 07:48:11,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 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 07:48:11,635 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 187 flow. Second operand 7 states and 1126 transitions. [2023-11-19 07:48:11,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 113 transitions, 672 flow [2023-11-19 07:48:11,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 113 transitions, 610 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:11,659 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 237 flow [2023-11-19 07:48:11,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-19 07:48:11,660 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-11-19 07:48:11,661 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 237 flow [2023-11-19 07:48:11,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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 07:48:11,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:11,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:11,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:48:11,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:11,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash 62269260, now seen corresponding path program 1 times [2023-11-19 07:48:11,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:11,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236469085] [2023-11-19 07:48:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:12,118 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 07:48:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:12,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236469085] [2023-11-19 07:48:12,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236469085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:12,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:12,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819676127] [2023-11-19 07:48:12,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:12,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:12,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 337 [2023-11-19 07:48:12,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 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 07:48:12,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:12,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 337 [2023-11-19 07:48:12,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:12,832 INFO L124 PetriNetUnfolderBase]: 2058/3289 cut-off events. [2023-11-19 07:48:12,832 INFO L125 PetriNetUnfolderBase]: For 3631/3631 co-relation queries the response was YES. [2023-11-19 07:48:12,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9493 conditions, 3289 events. 2058/3289 cut-off events. For 3631/3631 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17948 event pairs, 260 based on Foata normal form. 11/3288 useless extension candidates. Maximal degree in co-relation 9481. Up to 1880 conditions per place. [2023-11-19 07:48:12,846 INFO L140 encePairwiseOnDemand]: 333/337 looper letters, 68 selfloop transitions, 2 changer transitions 35/108 dead transitions. [2023-11-19 07:48:12,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 108 transitions, 839 flow [2023-11-19 07:48:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2023-11-19 07:48:12,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46943620178041545 [2023-11-19 07:48:12,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2023-11-19 07:48:12,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2023-11-19 07:48:12,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:12,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2023-11-19 07:48:12,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 07:48:12,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:12,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 07:48:12,857 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 237 flow. Second operand 5 states and 791 transitions. [2023-11-19 07:48:12,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 108 transitions, 839 flow [2023-11-19 07:48:12,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 108 transitions, 691 flow, removed 51 selfloop flow, removed 5 redundant places. [2023-11-19 07:48:12,886 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 198 flow [2023-11-19 07:48:12,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-11-19 07:48:12,887 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-11-19 07:48:12,889 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 198 flow [2023-11-19 07:48:12,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 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 07:48:12,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:12,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:12,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:48:12,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:12,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash -374427242, now seen corresponding path program 2 times [2023-11-19 07:48:12,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:12,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408363770] [2023-11-19 07:48:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:15,855 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 07:48:15,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:15,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408363770] [2023-11-19 07:48:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408363770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:15,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:15,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:48:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420232337] [2023-11-19 07:48:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:15,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:48:15,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:48:15,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:48:15,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 337 [2023-11-19 07:48:16,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 198 flow. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 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 07:48:16,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:16,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 337 [2023-11-19 07:48:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:18,239 INFO L124 PetriNetUnfolderBase]: 4950/7586 cut-off events. [2023-11-19 07:48:18,240 INFO L125 PetriNetUnfolderBase]: For 5789/5789 co-relation queries the response was YES. [2023-11-19 07:48:18,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21678 conditions, 7586 events. 4950/7586 cut-off events. For 5789/5789 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 45596 event pairs, 240 based on Foata normal form. 15/7563 useless extension candidates. Maximal degree in co-relation 21665. Up to 2670 conditions per place. [2023-11-19 07:48:18,283 INFO L140 encePairwiseOnDemand]: 327/337 looper letters, 159 selfloop transitions, 16 changer transitions 25/204 dead transitions. [2023-11-19 07:48:18,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 204 transitions, 1345 flow [2023-11-19 07:48:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:48:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:48:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1504 transitions. [2023-11-19 07:48:18,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44629080118694364 [2023-11-19 07:48:18,292 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1504 transitions. [2023-11-19 07:48:18,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1504 transitions. [2023-11-19 07:48:18,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:18,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1504 transitions. [2023-11-19 07:48:18,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 150.4) internal successors, (1504), 10 states have internal predecessors, (1504), 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 07:48:18,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 337.0) internal successors, (3707), 11 states have internal predecessors, (3707), 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 07:48:18,306 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 337.0) internal successors, (3707), 11 states have internal predecessors, (3707), 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 07:48:18,306 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 198 flow. Second operand 10 states and 1504 transitions. [2023-11-19 07:48:18,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 204 transitions, 1345 flow [2023-11-19 07:48:18,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 204 transitions, 1330 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:18,441 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 312 flow [2023-11-19 07:48:18,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-11-19 07:48:18,442 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-11-19 07:48:18,442 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 312 flow [2023-11-19 07:48:18,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 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 07:48:18,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:18,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:18,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:48:18,444 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-19 07:48:18,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -267116624, now seen corresponding path program 3 times [2023-11-19 07:48:18,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273348003] [2023-11-19 07:48:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms