./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe021_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe021_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:15:03,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:15:03,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:15:03,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:15:03,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:15:03,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:15:03,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:15:03,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:15:03,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:15:03,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:15:03,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:15:03,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:15:03,861 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:15:03,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:15:03,863 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:15:03,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:15:03,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:15:03,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:15:03,864 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:15:03,865 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:15:03,865 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:15:03,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:15:03,866 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:15:03,867 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:15:03,867 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:15:03,867 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:15:03,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:15:03,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:15:03,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:15:03,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:15:03,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:15:03,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:15:03,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:15:03,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:15:03,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:15:03,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:15:03,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:15:03,872 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:15:03,872 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_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 [2023-11-06 21:15:04,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:15:04,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:15:04,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:15:04,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:15:04,174 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:15:04,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe021_tso.i [2023-11-06 21:15:07,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:15:07,577 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:15:07,578 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/sv-benchmarks/c/pthread-wmm/safe021_tso.i [2023-11-06 21:15:07,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/data/2587cf4f8/dcaf6eef8bb44f42bff41c8c49d2e473/FLAG4f3a71df4 [2023-11-06 21:15:07,623 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/data/2587cf4f8/dcaf6eef8bb44f42bff41c8c49d2e473 [2023-11-06 21:15:07,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:15:07,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:15:07,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:07,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:15:07,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:15:07,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:07" (1/1) ... [2023-11-06 21:15:07,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19055793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:07, skipping insertion in model container [2023-11-06 21:15:07,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:07" (1/1) ... [2023-11-06 21:15:07,694 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:15:08,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:08,118 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:15:08,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:08,242 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:15:08,242 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:15:08,250 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:15:08,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08 WrapperNode [2023-11-06 21:15:08,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:08,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:08,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:15:08,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:15:08,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,332 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-06 21:15:08,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:08,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:15:08,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:15:08,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:15:08,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:15:08,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:15:08,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:15:08,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:15:08,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (1/1) ... [2023-11-06 21:15:08,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:15:08,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:08,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:08,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:15:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:15:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:15:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:15:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:15:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:15:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:15:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:15:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:15:08,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:15:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 21:15:08,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 21:15:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:15:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:15:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:15:08,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:15:08,497 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:15:08,727 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:15:08,729 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:15:09,027 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:15:09,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:15:09,036 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:15:09,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:09 BoogieIcfgContainer [2023-11-06 21:15:09,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:15:09,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:15:09,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:15:09,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:15:09,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:15:07" (1/3) ... [2023-11-06 21:15:09,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4530366c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:09, skipping insertion in model container [2023-11-06 21:15:09,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:08" (2/3) ... [2023-11-06 21:15:09,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4530366c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:09, skipping insertion in model container [2023-11-06 21:15:09,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:09" (3/3) ... [2023-11-06 21:15:09,050 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2023-11-06 21:15:09,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:15:09,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 21:15:09,073 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:15:09,197 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:15:09,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 103 transitions, 218 flow [2023-11-06 21:15:09,322 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2023-11-06 21:15:09,322 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:09,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 3/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-06 21:15:09,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 103 transitions, 218 flow [2023-11-06 21:15:09,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 95 transitions, 199 flow [2023-11-06 21:15:09,338 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:15:09,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 95 transitions, 199 flow [2023-11-06 21:15:09,356 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 95 transitions, 199 flow [2023-11-06 21:15:09,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 199 flow [2023-11-06 21:15:09,387 INFO L124 PetriNetUnfolderBase]: 3/95 cut-off events. [2023-11-06 21:15:09,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 95 events. 3/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-06 21:15:09,391 INFO L119 LiptonReduction]: Number of co-enabled transitions 1800 [2023-11-06 21:15:12,522 INFO L134 LiptonReduction]: Checked pairs total: 3460 [2023-11-06 21:15:12,523 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-06 21:15:12,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:15:12,544 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;@607a7f76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:15:12,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 21:15:12,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:15:12,546 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:15:12,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:12,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:12,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:15:12,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:12,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash 366, now seen corresponding path program 1 times [2023-11-06 21:15:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:12,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71736948] [2023-11-06 21:15:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:12,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:12,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71736948] [2023-11-06 21:15:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71736948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:12,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:12,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:15:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766101526] [2023-11-06 21:15:12,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:12,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:15:12,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:15:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:15:12,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 201 [2023-11-06 21:15:12,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:12,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:12,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 201 [2023-11-06 21:15:12,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:12,832 INFO L124 PetriNetUnfolderBase]: 218/376 cut-off events. [2023-11-06 21:15:12,832 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:15:12,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 376 events. 218/376 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1615 event pairs, 218 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 747. Up to 352 conditions per place. [2023-11-06 21:15:12,838 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-11-06 21:15:12,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2023-11-06 21:15:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:15:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:15:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 214 transitions. [2023-11-06 21:15:12,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323383084577115 [2023-11-06 21:15:12,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 214 transitions. [2023-11-06 21:15:12,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 214 transitions. [2023-11-06 21:15:12,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:12,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 214 transitions. [2023-11-06 21:15:12,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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) [2023-11-06 21:15:12,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-06 21:15:12,881 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-06 21:15:12,883 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 2 states and 214 transitions. [2023-11-06 21:15:12,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2023-11-06 21:15:12,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:15:12,887 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-11-06 21:15:12,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-11-06 21:15:12,894 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-11-06 21:15:12,894 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-11-06 21:15:12,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:12,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:12,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:12,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:15:12,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:12,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1125063233, now seen corresponding path program 1 times [2023-11-06 21:15:12,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:12,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250799286] [2023-11-06 21:15:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:13,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250799286] [2023-11-06 21:15:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250799286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:13,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:13,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:15:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226603267] [2023-11-06 21:15:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:13,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:13,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 201 [2023-11-06 21:15:13,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-11-06 21:15:13,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:13,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 201 [2023-11-06 21:15:13,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:13,605 INFO L124 PetriNetUnfolderBase]: 556/915 cut-off events. [2023-11-06 21:15:13,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:13,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 915 events. 556/915 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4499 event pairs, 177 based on Foata normal form. 0/871 useless extension candidates. Maximal degree in co-relation 1852. Up to 561 conditions per place. [2023-11-06 21:15:13,619 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-11-06 21:15:13,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 126 flow [2023-11-06 21:15:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-11-06 21:15:13,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925373134328358 [2023-11-06 21:15:13,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-11-06 21:15:13,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-11-06 21:15:13,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:13,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-11-06 21:15:13,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-11-06 21:15:13,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-06 21:15:13,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-06 21:15:13,637 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 297 transitions. [2023-11-06 21:15:13,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 126 flow [2023-11-06 21:15:13,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:13,643 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 88 flow [2023-11-06 21:15:13,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-06 21:15:13,644 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-11-06 21:15:13,644 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 88 flow [2023-11-06 21:15:13,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-11-06 21:15:13,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:13,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:13,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:15:13,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:13,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1125063236, now seen corresponding path program 1 times [2023-11-06 21:15:13,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:13,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462662400] [2023-11-06 21:15:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:13,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:14,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462662400] [2023-11-06 21:15:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462662400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703944698] [2023-11-06 21:15:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 201 [2023-11-06 21:15:14,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2023-11-06 21:15:14,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:14,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 201 [2023-11-06 21:15:14,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:14,420 INFO L124 PetriNetUnfolderBase]: 379/669 cut-off events. [2023-11-06 21:15:14,421 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2023-11-06 21:15:14,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 669 events. 379/669 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3294 event pairs, 59 based on Foata normal form. 23/685 useless extension candidates. Maximal degree in co-relation 1722. Up to 452 conditions per place. [2023-11-06 21:15:14,428 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 24 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2023-11-06 21:15:14,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 176 flow [2023-11-06 21:15:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:15:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-11-06 21:15:14,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43084577114427863 [2023-11-06 21:15:14,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-11-06 21:15:14,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-11-06 21:15:14,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:14,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-11-06 21:15:14,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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) [2023-11-06 21:15:14,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:14,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:14,438 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 88 flow. Second operand 5 states and 433 transitions. [2023-11-06 21:15:14,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 176 flow [2023-11-06 21:15:14,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:15:14,444 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 95 flow [2023-11-06 21:15:14,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-06 21:15:14,446 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-06 21:15:14,446 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 95 flow [2023-11-06 21:15:14,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2023-11-06 21:15:14,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:14,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:14,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:15:14,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:14,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash 517220668, now seen corresponding path program 1 times [2023-11-06 21:15:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:14,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604925266] [2023-11-06 21:15:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:14,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:14,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604925266] [2023-11-06 21:15:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604925266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:14,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:14,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195733876] [2023-11-06 21:15:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:14,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:15,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 201 [2023-11-06 21:15:15,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 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) [2023-11-06 21:15:15,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:15,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 201 [2023-11-06 21:15:15,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:15,220 INFO L124 PetriNetUnfolderBase]: 567/996 cut-off events. [2023-11-06 21:15:15,221 INFO L125 PetriNetUnfolderBase]: For 482/489 co-relation queries the response was YES. [2023-11-06 21:15:15,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 996 events. 567/996 cut-off events. For 482/489 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5303 event pairs, 301 based on Foata normal form. 23/955 useless extension candidates. Maximal degree in co-relation 2569. Up to 531 conditions per place. [2023-11-06 21:15:15,230 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 31 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-11-06 21:15:15,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 218 flow [2023-11-06 21:15:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:15:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2023-11-06 21:15:15,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298507462686567 [2023-11-06 21:15:15,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2023-11-06 21:15:15,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2023-11-06 21:15:15,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:15,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2023-11-06 21:15:15,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 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) [2023-11-06 21:15:15,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:15,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:15,239 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 95 flow. Second operand 5 states and 432 transitions. [2023-11-06 21:15:15,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 218 flow [2023-11-06 21:15:15,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:15:15,242 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 110 flow [2023-11-06 21:15:15,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-11-06 21:15:15,243 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-06 21:15:15,243 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 110 flow [2023-11-06 21:15:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 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) [2023-11-06 21:15:15,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:15,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:15,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:15:15,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:15,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 517177885, now seen corresponding path program 1 times [2023-11-06 21:15:15,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:15,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112493436] [2023-11-06 21:15:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:15,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112493436] [2023-11-06 21:15:15,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112493436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:15,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:15,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:15:15,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528852232] [2023-11-06 21:15:15,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:15,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:15,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:15,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:15,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:15,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 201 [2023-11-06 21:15:15,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-06 21:15:15,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:15,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 201 [2023-11-06 21:15:15,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:15,490 INFO L124 PetriNetUnfolderBase]: 538/959 cut-off events. [2023-11-06 21:15:15,490 INFO L125 PetriNetUnfolderBase]: For 490/492 co-relation queries the response was YES. [2023-11-06 21:15:15,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 959 events. 538/959 cut-off events. For 490/492 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5008 event pairs, 312 based on Foata normal form. 6/957 useless extension candidates. Maximal degree in co-relation 2484. Up to 832 conditions per place. [2023-11-06 21:15:15,499 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2023-11-06 21:15:15,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 223 flow [2023-11-06 21:15:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-11-06 21:15:15,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074626865671642 [2023-11-06 21:15:15,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-11-06 21:15:15,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-11-06 21:15:15,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:15,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-11-06 21:15:15,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2023-11-06 21:15:15,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-06 21:15:15,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-06 21:15:15,506 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 110 flow. Second operand 3 states and 306 transitions. [2023-11-06 21:15:15,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 223 flow [2023-11-06 21:15:15,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:15:15,510 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 147 flow [2023-11-06 21:15:15,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-06 21:15:15,511 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-06 21:15:15,511 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 147 flow [2023-11-06 21:15:15,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-06 21:15:15,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:15,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:15:15,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:15,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1146036486, now seen corresponding path program 1 times [2023-11-06 21:15:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:15,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288648780] [2023-11-06 21:15:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288648780] [2023-11-06 21:15:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288648780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:15,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146910166] [2023-11-06 21:15:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:15,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:15:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:15:15,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:15:15,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 201 [2023-11-06 21:15:15,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-11-06 21:15:15,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:15,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 201 [2023-11-06 21:15:15,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:15,946 INFO L124 PetriNetUnfolderBase]: 799/1306 cut-off events. [2023-11-06 21:15:15,946 INFO L125 PetriNetUnfolderBase]: For 945/945 co-relation queries the response was YES. [2023-11-06 21:15:15,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 1306 events. 799/1306 cut-off events. For 945/945 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6239 event pairs, 166 based on Foata normal form. 14/1320 useless extension candidates. Maximal degree in co-relation 3710. Up to 605 conditions per place. [2023-11-06 21:15:15,959 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 43 selfloop transitions, 19 changer transitions 0/62 dead transitions. [2023-11-06 21:15:15,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 62 transitions, 401 flow [2023-11-06 21:15:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:15:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2023-11-06 21:15:15,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845771144278607 [2023-11-06 21:15:15,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2023-11-06 21:15:15,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2023-11-06 21:15:15,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:15,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2023-11-06 21:15:15,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 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) [2023-11-06 21:15:15,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:15,968 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:15,968 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 147 flow. Second operand 5 states and 487 transitions. [2023-11-06 21:15:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 62 transitions, 401 flow [2023-11-06 21:15:15,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:15:15,973 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 300 flow [2023-11-06 21:15:15,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-06 21:15:15,974 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-11-06 21:15:15,974 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 300 flow [2023-11-06 21:15:15,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-11-06 21:15:15,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:15,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:15,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:15:15,976 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:15,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1147356156, now seen corresponding path program 2 times [2023-11-06 21:15:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:15,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22842979] [2023-11-06 21:15:15,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:15,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:16,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:16,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22842979] [2023-11-06 21:15:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22842979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:16,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:16,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368240727] [2023-11-06 21:15:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:16,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:16,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:16,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:16,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 201 [2023-11-06 21:15:16,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-11-06 21:15:16,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:16,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 201 [2023-11-06 21:15:16,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:16,342 INFO L124 PetriNetUnfolderBase]: 851/1408 cut-off events. [2023-11-06 21:15:16,342 INFO L125 PetriNetUnfolderBase]: For 2978/2978 co-relation queries the response was YES. [2023-11-06 21:15:16,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4796 conditions, 1408 events. 851/1408 cut-off events. For 2978/2978 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6929 event pairs, 174 based on Foata normal form. 40/1448 useless extension candidates. Maximal degree in co-relation 4784. Up to 441 conditions per place. [2023-11-06 21:15:16,353 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 33 selfloop transitions, 10 changer transitions 18/61 dead transitions. [2023-11-06 21:15:16,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 498 flow [2023-11-06 21:15:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:15:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2023-11-06 21:15:16,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766169154228856 [2023-11-06 21:15:16,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2023-11-06 21:15:16,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2023-11-06 21:15:16,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:16,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2023-11-06 21:15:16,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2023-11-06 21:15:16,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:16,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:16,362 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 300 flow. Second operand 5 states and 479 transitions. [2023-11-06 21:15:16,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 498 flow [2023-11-06 21:15:16,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:16,372 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 249 flow [2023-11-06 21:15:16,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-11-06 21:15:16,373 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-06 21:15:16,373 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 249 flow [2023-11-06 21:15:16,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-11-06 21:15:16,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:16,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:16,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:15:16,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:16,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 591402370, now seen corresponding path program 1 times [2023-11-06 21:15:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403683266] [2023-11-06 21:15:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:16,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:16,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403683266] [2023-11-06 21:15:16,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403683266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:16,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:16,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:16,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850928036] [2023-11-06 21:15:16,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:16,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:16,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:16,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 21:15:16,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-11-06 21:15:16,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:16,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 21:15:16,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:16,572 INFO L124 PetriNetUnfolderBase]: 277/542 cut-off events. [2023-11-06 21:15:16,572 INFO L125 PetriNetUnfolderBase]: For 2018/2096 co-relation queries the response was YES. [2023-11-06 21:15:16,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 542 events. 277/542 cut-off events. For 2018/2096 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2762 event pairs, 84 based on Foata normal form. 17/533 useless extension candidates. Maximal degree in co-relation 2011. Up to 440 conditions per place. [2023-11-06 21:15:16,578 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 27 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-11-06 21:15:16,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 377 flow [2023-11-06 21:15:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-06 21:15:16,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008291873963516 [2023-11-06 21:15:16,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-06 21:15:16,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-06 21:15:16,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:16,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-06 21:15:16,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:16,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-06 21:15:16,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-06 21:15:16,584 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 249 flow. Second operand 3 states and 302 transitions. [2023-11-06 21:15:16,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 377 flow [2023-11-06 21:15:16,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 320 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-06 21:15:16,591 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 224 flow [2023-11-06 21:15:16,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2023-11-06 21:15:16,592 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-06 21:15:16,592 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 224 flow [2023-11-06 21:15:16,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-11-06 21:15:16,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:16,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:16,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:15:16,593 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:16,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash 645503641, now seen corresponding path program 1 times [2023-11-06 21:15:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:16,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685446149] [2023-11-06 21:15:16,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:16,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:16,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:16,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685446149] [2023-11-06 21:15:16,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685446149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:16,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:16,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:16,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79967914] [2023-11-06 21:15:16,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:15:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:16,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:15:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:15:16,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 21:15:16,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2023-11-06 21:15:16,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:16,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 21:15:16,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:16,799 INFO L124 PetriNetUnfolderBase]: 153/337 cut-off events. [2023-11-06 21:15:16,800 INFO L125 PetriNetUnfolderBase]: For 630/679 co-relation queries the response was YES. [2023-11-06 21:15:16,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 337 events. 153/337 cut-off events. For 630/679 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1584 event pairs, 26 based on Foata normal form. 60/385 useless extension candidates. Maximal degree in co-relation 1303. Up to 164 conditions per place. [2023-11-06 21:15:16,803 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 32 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-11-06 21:15:16,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 399 flow [2023-11-06 21:15:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:15:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:15:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2023-11-06 21:15:16,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987562189054726 [2023-11-06 21:15:16,806 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2023-11-06 21:15:16,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2023-11-06 21:15:16,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:16,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2023-11-06 21:15:16,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 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) [2023-11-06 21:15:16,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-06 21:15:16,810 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-06 21:15:16,810 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 224 flow. Second operand 4 states and 401 transitions. [2023-11-06 21:15:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 399 flow [2023-11-06 21:15:16,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 388 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 21:15:16,815 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 253 flow [2023-11-06 21:15:16,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-11-06 21:15:16,816 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-06 21:15:16,816 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 253 flow [2023-11-06 21:15:16,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2023-11-06 21:15:16,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:16,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:16,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:15:16,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:16,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2112604480, now seen corresponding path program 1 times [2023-11-06 21:15:16,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:16,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935240249] [2023-11-06 21:15:16,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:16,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935240249] [2023-11-06 21:15:17,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935240249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:17,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236004159] [2023-11-06 21:15:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:17,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:17,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 201 [2023-11-06 21:15:17,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2023-11-06 21:15:17,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:17,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 201 [2023-11-06 21:15:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:17,279 INFO L124 PetriNetUnfolderBase]: 145/337 cut-off events. [2023-11-06 21:15:17,279 INFO L125 PetriNetUnfolderBase]: For 897/913 co-relation queries the response was YES. [2023-11-06 21:15:17,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 337 events. 145/337 cut-off events. For 897/913 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1629 event pairs, 20 based on Foata normal form. 14/343 useless extension candidates. Maximal degree in co-relation 1400. Up to 260 conditions per place. [2023-11-06 21:15:17,293 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 28 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-11-06 21:15:17,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 345 flow [2023-11-06 21:15:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:15:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-11-06 21:15:17,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41890547263681593 [2023-11-06 21:15:17,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-11-06 21:15:17,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-11-06 21:15:17,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:17,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-11-06 21:15:17,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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) [2023-11-06 21:15:17,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:17,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:17,301 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 253 flow. Second operand 5 states and 421 transitions. [2023-11-06 21:15:17,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 345 flow [2023-11-06 21:15:17,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 311 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 21:15:17,305 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 211 flow [2023-11-06 21:15:17,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-11-06 21:15:17,306 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-11-06 21:15:17,306 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 211 flow [2023-11-06 21:15:17,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2023-11-06 21:15:17,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:17,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:17,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:15:17,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:17,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:17,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1176228986, now seen corresponding path program 1 times [2023-11-06 21:15:17,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:17,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793478706] [2023-11-06 21:15:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:17,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:17,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793478706] [2023-11-06 21:15:17,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793478706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:17,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:17,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:15:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606526582] [2023-11-06 21:15:17,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:17,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:17,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:17,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 21:15:17,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2023-11-06 21:15:17,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:17,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 21:15:17,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:17,500 INFO L124 PetriNetUnfolderBase]: 115/255 cut-off events. [2023-11-06 21:15:17,500 INFO L125 PetriNetUnfolderBase]: For 520/604 co-relation queries the response was YES. [2023-11-06 21:15:17,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 255 events. 115/255 cut-off events. For 520/604 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1149 event pairs, 17 based on Foata normal form. 78/324 useless extension candidates. Maximal degree in co-relation 983. Up to 97 conditions per place. [2023-11-06 21:15:17,503 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 26 selfloop transitions, 10 changer transitions 1/47 dead transitions. [2023-11-06 21:15:17,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 374 flow [2023-11-06 21:15:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:15:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2023-11-06 21:15:17,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48955223880597015 [2023-11-06 21:15:17,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2023-11-06 21:15:17,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2023-11-06 21:15:17,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:17,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2023-11-06 21:15:17,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 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) [2023-11-06 21:15:17,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:17,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-06 21:15:17,512 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 211 flow. Second operand 5 states and 492 transitions. [2023-11-06 21:15:17,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 374 flow [2023-11-06 21:15:17,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 338 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 21:15:17,515 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 219 flow [2023-11-06 21:15:17,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-11-06 21:15:17,516 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-11-06 21:15:17,516 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 219 flow [2023-11-06 21:15:17,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2023-11-06 21:15:17,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:17,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:17,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:15:17,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:15:17,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash -452497610, now seen corresponding path program 1 times [2023-11-06 21:15:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:17,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457752528] [2023-11-06 21:15:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:17,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:17,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:17,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457752528] [2023-11-06 21:15:17,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457752528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:17,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:17,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157067341] [2023-11-06 21:15:17,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:17,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:15:17,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:17,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:15:17,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:15:17,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 21:15:17,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2023-11-06 21:15:17,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:17,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 21:15:17,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:17,725 INFO L124 PetriNetUnfolderBase]: 146/327 cut-off events. [2023-11-06 21:15:17,726 INFO L125 PetriNetUnfolderBase]: For 882/900 co-relation queries the response was YES. [2023-11-06 21:15:17,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 327 events. 146/327 cut-off events. For 882/900 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1547 event pairs, 27 based on Foata normal form. 3/325 useless extension candidates. Maximal degree in co-relation 1361. Up to 183 conditions per place. [2023-11-06 21:15:17,727 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-11-06 21:15:17,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 458 flow [2023-11-06 21:15:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:15:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:15:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2023-11-06 21:15:17,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925373134328358 [2023-11-06 21:15:17,730 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2023-11-06 21:15:17,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2023-11-06 21:15:17,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:17,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2023-11-06 21:15:17,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-11-06 21:15:17,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-06 21:15:17,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-06 21:15:17,735 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 219 flow. Second operand 4 states and 396 transitions. [2023-11-06 21:15:17,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 458 flow [2023-11-06 21:15:17,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 402 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-06 21:15:17,740 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-11-06 21:15:17,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-11-06 21:15:17,741 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-06 21:15:17,741 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-11-06 21:15:17,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2023-11-06 21:15:17,744 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-06 21:15:17,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-06 21:15:17,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-06 21:15:17,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-06 21:15:17,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-06 21:15:17,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-06 21:15:17,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-06 21:15:17,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-06 21:15:17,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-06 21:15:17,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-06 21:15:17,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-06 21:15:17,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:15:17,747 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:17,750 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:15:17,751 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:15:17,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:15:17 BasicIcfg [2023-11-06 21:15:17,755 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:15:17,755 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:15:17,755 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:15:17,756 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:15:17,756 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:09" (3/4) ... [2023-11-06 21:15:17,758 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:15:17,763 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 21:15:17,763 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 21:15:17,763 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 21:15:17,768 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-06 21:15:17,769 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 21:15:17,769 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:15:17,769 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:15:17,818 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:15:17,819 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:15:17,819 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:15:17,819 INFO L158 Benchmark]: Toolchain (without parser) took 10184.93ms. Allocated memory was 140.5MB in the beginning and 209.7MB in the end (delta: 69.2MB). Free memory was 102.0MB in the beginning and 67.8MB in the end (delta: 34.2MB). Peak memory consumption was 106.6MB. Max. memory is 16.1GB. [2023-11-06 21:15:17,820 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:17,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.93ms. Allocated memory is still 140.5MB. Free memory was 102.0MB in the beginning and 81.4MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:15:17,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.03ms. Allocated memory is still 140.5MB. Free memory was 81.4MB in the beginning and 79.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:15:17,821 INFO L158 Benchmark]: Boogie Preprocessor took 59.77ms. Allocated memory is still 140.5MB. Free memory was 79.2MB in the beginning and 77.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:15:17,822 INFO L158 Benchmark]: RCFGBuilder took 645.51ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 63.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 21:15:17,822 INFO L158 Benchmark]: TraceAbstraction took 8711.85ms. Allocated memory was 140.5MB in the beginning and 209.7MB in the end (delta: 69.2MB). Free memory was 62.2MB in the beginning and 72.0MB in the end (delta: -9.8MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2023-11-06 21:15:17,822 INFO L158 Benchmark]: Witness Printer took 63.74ms. Allocated memory is still 209.7MB. Free memory was 72.0MB in the beginning and 67.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:15:17,824 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.93ms. Allocated memory is still 140.5MB. Free memory was 102.0MB in the beginning and 81.4MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.03ms. Allocated memory is still 140.5MB. Free memory was 81.4MB in the beginning and 79.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.77ms. Allocated memory is still 140.5MB. Free memory was 79.2MB in the beginning and 77.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 645.51ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 63.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8711.85ms. Allocated memory was 140.5MB in the beginning and 209.7MB in the end (delta: 69.2MB). Free memory was 62.2MB in the beginning and 72.0MB in the end (delta: -9.8MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. * Witness Printer took 63.74ms. Allocated memory is still 209.7MB. Free memory was 72.0MB in the beginning and 67.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 102 PlacesBefore, 34 PlacesAfterwards, 95 TransitionsBefore, 25 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 98 TotalNumberOfCompositions, 3460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1915, independent: 1815, independent conditional: 0, independent unconditional: 1815, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1050, independent: 1020, independent conditional: 0, independent unconditional: 1020, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1915, independent: 795, independent conditional: 0, independent unconditional: 795, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 1050, unknown conditional: 0, unknown unconditional: 1050] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 125 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 286 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 940 IncrementalHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 60 mSDtfsCounter, 940 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=6, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:15:17,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdfa2fe-91f0-4bc2-a404-6b6615ff094d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE