./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:52,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:52,483 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:59:52,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:52,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:52,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:52,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:52,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:52,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:59:52,549 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:59:52,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:59:52,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:59:52,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:52,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:52,553 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:52,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:52,554 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:59:52,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:52,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:59:52,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:52,557 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:59:52,558 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:59:52,558 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:59:52,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:59:52,559 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:59:52,559 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:59:52,560 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:59:52,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:52,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:52,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:52,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:59:52,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:59:52,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:52,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:52,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:59:52,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:52,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:59:52,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:59:52,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:59:52,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:59:52,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:59:52,566 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_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2023-11-26 11:59:52,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:59:52,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:59:52,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:59:52,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:59:52,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:59:52,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2023-11-26 11:59:56,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:59:56,365 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:59:56,366 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2023-11-26 11:59:56,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/data/82b68b087/d199b22d7d074cfcb0f0c806874c7c59/FLAG81ba19b60 [2023-11-26 11:59:56,410 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/data/82b68b087/d199b22d7d074cfcb0f0c806874c7c59 [2023-11-26 11:59:56,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:59:56,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:59:56,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:56,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:59:56,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:59:56,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ac7aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56, skipping insertion in model container [2023-11-26 11:59:56,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,505 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:59:56,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:56,976 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:59:57,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:57,118 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:59:57,118 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:59:57,126 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:59:57,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57 WrapperNode [2023-11-26 11:59:57,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:57,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:57,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:59:57,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:59:57,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,209 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 175 [2023-11-26 11:59:57,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:57,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:59:57,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:59:57,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:59:57,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,262 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-26 11:59:57,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:59:57,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:59:57,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:59:57,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:59:57,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:57,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:57,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:57,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:59:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:59:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:59:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:59:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:59:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:59:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:59:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:59:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:59:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:59:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:59:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:59:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:59:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:59:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:59:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:59:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:59:57,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:59:57,454 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:59:57,602 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:59:57,604 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:59:58,090 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:59:58,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:59:58,428 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:59:58,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:58 BoogieIcfgContainer [2023-11-26 11:59:58,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:59:58,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:59:58,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:59:58,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:59:58,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:59:56" (1/3) ... [2023-11-26 11:59:58,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca5d985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:58, skipping insertion in model container [2023-11-26 11:59:58,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (2/3) ... [2023-11-26 11:59:58,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca5d985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:58, skipping insertion in model container [2023-11-26 11:59:58,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:58" (3/3) ... [2023-11-26 11:59:58,445 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-11-26 11:59:58,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:59:58,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-26 11:59:58,467 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:59:58,520 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:59:58,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 94 flow [2023-11-26 11:59:58,601 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2023-11-26 11:59:58,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:59:58,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 2/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-26 11:59:58,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 43 transitions, 94 flow [2023-11-26 11:59:58,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 41 transitions, 88 flow [2023-11-26 11:59:58,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:59:58,640 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;@6ed69c59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:59:58,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 11:59:58,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:59:58,644 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:59:58,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:59:58,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:58,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:59:58,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:59:58,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 13750, now seen corresponding path program 1 times [2023-11-26 11:59:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:58,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053550991] [2023-11-26 11:59:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:58,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:59,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:59,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053550991] [2023-11-26 11:59:59,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053550991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:59,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:59,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:59:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556584908] [2023-11-26 11:59:59,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:59,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:59:59,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:59,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:59:59,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:59:59,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-26 11:59:59,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:59:59,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-26 11:59:59,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:59:59,373 INFO L124 PetriNetUnfolderBase]: 272/597 cut-off events. [2023-11-26 11:59:59,373 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:59:59,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 597 events. 272/597 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3594 event pairs, 208 based on Foata normal form. 42/598 useless extension candidates. Maximal degree in co-relation 1065. Up to 363 conditions per place. [2023-11-26 11:59:59,383 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 27 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-26 11:59:59,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 154 flow [2023-11-26 11:59:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:59:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:59:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-26 11:59:59,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:59:59,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-26 11:59:59,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-26 11:59:59,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:59:59,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-26 11:59:59,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,412 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 88 flow. Second operand 3 states and 86 transitions. [2023-11-26 11:59:59,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 154 flow [2023-11-26 11:59:59,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:59:59,419 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 82 flow [2023-11-26 11:59:59,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-26 11:59:59,425 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2023-11-26 11:59:59,426 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 82 flow [2023-11-26 11:59:59,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:59,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:59:59,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:59:59,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:59:59,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash 13751, now seen corresponding path program 1 times [2023-11-26 11:59:59,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787087603] [2023-11-26 11:59:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:59,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787087603] [2023-11-26 11:59:59,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787087603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:59,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:59,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:59:59,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831648910] [2023-11-26 11:59:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:59,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:59:59,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:59,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:59:59,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:59:59,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43 [2023-11-26 11:59:59,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:59:59,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43 [2023-11-26 11:59:59,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:59:59,821 INFO L124 PetriNetUnfolderBase]: 272/596 cut-off events. [2023-11-26 11:59:59,821 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-26 11:59:59,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 596 events. 272/596 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3593 event pairs, 208 based on Foata normal form. 1/556 useless extension candidates. Maximal degree in co-relation 1086. Up to 362 conditions per place. [2023-11-26 11:59:59,828 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 26 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-26 11:59:59,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 152 flow [2023-11-26 11:59:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:59:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:59:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-26 11:59:59,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:59:59,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-26 11:59:59,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-26 11:59:59,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:59:59,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-26 11:59:59,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,835 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 82 flow. Second operand 3 states and 86 transitions. [2023-11-26 11:59:59,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 152 flow [2023-11-26 11:59:59,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:59:59,839 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 80 flow [2023-11-26 11:59:59,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-11-26 11:59:59,840 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-26 11:59:59,841 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 80 flow [2023-11-26 11:59:59,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:59,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:59:59,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:59:59,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:59:59,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 410013874, now seen corresponding path program 1 times [2023-11-26 11:59:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536207540] [2023-11-26 11:59:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:59,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536207540] [2023-11-26 11:59:59,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536207540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:59,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:59,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:59:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059217482] [2023-11-26 11:59:59,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:59,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:59:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:59:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:59:59,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-26 11:59:59,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:59:59,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-26 11:59:59,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:00,128 INFO L124 PetriNetUnfolderBase]: 274/587 cut-off events. [2023-11-26 12:00:00,128 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-26 12:00:00,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 587 events. 274/587 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3525 event pairs, 215 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 1082. Up to 363 conditions per place. [2023-11-26 12:00:00,134 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 27 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-26 12:00:00,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 152 flow [2023-11-26 12:00:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-26 12:00:00,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2023-11-26 12:00:00,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-26 12:00:00,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-26 12:00:00,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:00,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-26 12:00:00,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,141 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 80 flow. Second operand 3 states and 84 transitions. [2023-11-26 12:00:00,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 152 flow [2023-11-26 12:00:00,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:00,144 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 78 flow [2023-11-26 12:00:00,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-26 12:00:00,145 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-11-26 12:00:00,146 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 78 flow [2023-11-26 12:00:00,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:00,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:00:00,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:00,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:00,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:00,148 INFO L85 PathProgramCache]: Analyzing trace with hash 410013875, now seen corresponding path program 1 times [2023-11-26 12:00:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:00,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639331509] [2023-11-26 12:00:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:00,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:00,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639331509] [2023-11-26 12:00:00,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639331509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:00,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:00,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:00,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020590983] [2023-11-26 12:00:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:00,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:00,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:00,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43 [2023-11-26 12:00:00,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:00,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43 [2023-11-26 12:00:00,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:00,468 INFO L124 PetriNetUnfolderBase]: 272/582 cut-off events. [2023-11-26 12:00:00,468 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 12:00:00,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 582 events. 272/582 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3489 event pairs, 213 based on Foata normal form. 3/552 useless extension candidates. Maximal degree in co-relation 1075. Up to 358 conditions per place. [2023-11-26 12:00:00,474 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 26 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-26 12:00:00,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 148 flow [2023-11-26 12:00:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-26 12:00:00,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 12:00:00,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-26 12:00:00,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-26 12:00:00,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:00,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-26 12:00:00,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,479 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 78 flow. Second operand 3 states and 86 transitions. [2023-11-26 12:00:00,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 148 flow [2023-11-26 12:00:00,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:00,482 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 76 flow [2023-11-26 12:00:00,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-11-26 12:00:00,483 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-11-26 12:00:00,483 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 76 flow [2023-11-26 12:00:00,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:00,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:00,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:00:00,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:00,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -766700666, now seen corresponding path program 1 times [2023-11-26 12:00:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045522947] [2023-11-26 12:00:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:00,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:00,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045522947] [2023-11-26 12:00:00,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045522947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:00,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:00,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:00:00,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146448710] [2023-11-26 12:00:00,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:00,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:00,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:00,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:00,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2023-11-26 12:00:00,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:00,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2023-11-26 12:00:00,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:00,877 INFO L124 PetriNetUnfolderBase]: 230/455 cut-off events. [2023-11-26 12:00:00,877 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-26 12:00:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 455 events. 230/455 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2454 event pairs, 20 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 876. Up to 346 conditions per place. [2023-11-26 12:00:00,882 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 2 changer transitions 2/43 dead transitions. [2023-11-26 12:00:00,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 154 flow [2023-11-26 12:00:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2023-11-26 12:00:00,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2023-11-26 12:00:00,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 90 transitions. [2023-11-26 12:00:00,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 90 transitions. [2023-11-26 12:00:00,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:00,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 90 transitions. [2023-11-26 12:00:00,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,887 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 76 flow. Second operand 3 states and 90 transitions. [2023-11-26 12:00:00,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 154 flow [2023-11-26 12:00:00,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:00,889 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 72 flow [2023-11-26 12:00:00,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-11-26 12:00:00,891 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-26 12:00:00,891 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 72 flow [2023-11-26 12:00:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:00,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:00,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:00,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:00,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:00,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash -541173244, now seen corresponding path program 1 times [2023-11-26 12:00:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954187287] [2023-11-26 12:00:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:01,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954187287] [2023-11-26 12:00:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954187287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:01,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:01,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305791923] [2023-11-26 12:00:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:01,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:01,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:01,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:01,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-26 12:00:01,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:01,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:01,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-26 12:00:01,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:01,673 INFO L124 PetriNetUnfolderBase]: 203/442 cut-off events. [2023-11-26 12:00:01,673 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-26 12:00:01,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 442 events. 203/442 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2412 event pairs, 174 based on Foata normal form. 18/454 useless extension candidates. Maximal degree in co-relation 821. Up to 305 conditions per place. [2023-11-26 12:00:01,677 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 18 selfloop transitions, 2 changer transitions 8/40 dead transitions. [2023-11-26 12:00:01,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 146 flow [2023-11-26 12:00:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-26 12:00:01,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534883720930233 [2023-11-26 12:00:01,680 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-26 12:00:01,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-26 12:00:01,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:01,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-26 12:00:01,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:01,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:01,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:01,685 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 72 flow. Second operand 5 states and 119 transitions. [2023-11-26 12:00:01,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 146 flow [2023-11-26 12:00:01,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:01,688 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 68 flow [2023-11-26 12:00:01,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-11-26 12:00:01,689 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-26 12:00:01,689 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 68 flow [2023-11-26 12:00:01,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:01,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:01,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:01,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:00:01,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:01,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -541171784, now seen corresponding path program 1 times [2023-11-26 12:00:01,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:01,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657449340] [2023-11-26 12:00:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:01,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657449340] [2023-11-26 12:00:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657449340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:02,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:02,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:00:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716658729] [2023-11-26 12:00:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:00:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:02,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:00:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:00:02,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2023-11-26 12:00:02,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:02,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:02,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2023-11-26 12:00:02,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:03,842 INFO L124 PetriNetUnfolderBase]: 1218/2135 cut-off events. [2023-11-26 12:00:03,842 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 12:00:03,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 2135 events. 1218/2135 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12274 event pairs, 113 based on Foata normal form. 0/2065 useless extension candidates. Maximal degree in co-relation 4191. Up to 725 conditions per place. [2023-11-26 12:00:03,853 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 39 selfloop transitions, 5 changer transitions 78/129 dead transitions. [2023-11-26 12:00:03,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 129 transitions, 514 flow [2023-11-26 12:00:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 12:00:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 293 transitions. [2023-11-26 12:00:03,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678294573643411 [2023-11-26 12:00:03,857 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 293 transitions. [2023-11-26 12:00:03,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 293 transitions. [2023-11-26 12:00:03,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:03,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 293 transitions. [2023-11-26 12:00:03,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:03,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:03,861 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:03,863 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 68 flow. Second operand 12 states and 293 transitions. [2023-11-26 12:00:03,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 129 transitions, 514 flow [2023-11-26 12:00:03,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 129 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:03,868 INFO L231 Difference]: Finished difference. Result has 55 places, 31 transitions, 99 flow [2023-11-26 12:00:03,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=99, PETRI_PLACES=55, PETRI_TRANSITIONS=31} [2023-11-26 12:00:03,870 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-26 12:00:03,870 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 31 transitions, 99 flow [2023-11-26 12:00:03,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:03,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:03,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:03,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:00:03,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:03,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:03,874 INFO L85 PathProgramCache]: Analyzing trace with hash -728783169, now seen corresponding path program 1 times [2023-11-26 12:00:03,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:03,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422393021] [2023-11-26 12:00:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:03,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:04,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:04,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422393021] [2023-11-26 12:00:04,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422393021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:04,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:04,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:04,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922992866] [2023-11-26 12:00:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:04,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:04,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:04,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43 [2023-11-26 12:00:04,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 31 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:04,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:04,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43 [2023-11-26 12:00:04,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:04,520 INFO L124 PetriNetUnfolderBase]: 360/773 cut-off events. [2023-11-26 12:00:04,520 INFO L125 PetriNetUnfolderBase]: For 609/613 co-relation queries the response was YES. [2023-11-26 12:00:04,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 773 events. 360/773 cut-off events. For 609/613 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4697 event pairs, 120 based on Foata normal form. 36/786 useless extension candidates. Maximal degree in co-relation 1745. Up to 399 conditions per place. [2023-11-26 12:00:04,528 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 20 selfloop transitions, 2 changer transitions 21/57 dead transitions. [2023-11-26 12:00:04,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 253 flow [2023-11-26 12:00:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:00:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2023-11-26 12:00:04,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913621262458472 [2023-11-26 12:00:04,531 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 178 transitions. [2023-11-26 12:00:04,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 178 transitions. [2023-11-26 12:00:04,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:04,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 178 transitions. [2023-11-26 12:00:04,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:04,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:04,534 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:04,534 INFO L175 Difference]: Start difference. First operand has 55 places, 31 transitions, 99 flow. Second operand 7 states and 178 transitions. [2023-11-26 12:00:04,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 253 flow [2023-11-26 12:00:04,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 229 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:04,549 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 103 flow [2023-11-26 12:00:04,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2023-11-26 12:00:04,553 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-11-26 12:00:04,553 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 103 flow [2023-11-26 12:00:04,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:04,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:04,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:04,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:00:04,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:04,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:04,555 INFO L85 PathProgramCache]: Analyzing trace with hash -522797986, now seen corresponding path program 1 times [2023-11-26 12:00:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:04,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656015634] [2023-11-26 12:00:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656015634] [2023-11-26 12:00:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656015634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:04,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:04,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392142327] [2023-11-26 12:00:04,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:04,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:04,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43 [2023-11-26 12:00:04,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:04,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:04,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43 [2023-11-26 12:00:04,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:05,276 INFO L124 PetriNetUnfolderBase]: 300/649 cut-off events. [2023-11-26 12:00:05,276 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-26 12:00:05,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 649 events. 300/649 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3825 event pairs, 132 based on Foata normal form. 24/651 useless extension candidates. Maximal degree in co-relation 1433. Up to 295 conditions per place. [2023-11-26 12:00:05,283 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 20 selfloop transitions, 2 changer transitions 17/53 dead transitions. [2023-11-26 12:00:05,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 239 flow [2023-11-26 12:00:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:00:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2023-11-26 12:00:05,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780730897009967 [2023-11-26 12:00:05,285 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 174 transitions. [2023-11-26 12:00:05,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 174 transitions. [2023-11-26 12:00:05,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:05,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 174 transitions. [2023-11-26 12:00:05,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:05,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:05,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:05,289 INFO L175 Difference]: Start difference. First operand has 51 places, 31 transitions, 103 flow. Second operand 7 states and 174 transitions. [2023-11-26 12:00:05,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 239 flow [2023-11-26 12:00:05,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 212 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-26 12:00:05,295 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 102 flow [2023-11-26 12:00:05,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2023-11-26 12:00:05,296 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-11-26 12:00:05,297 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 102 flow [2023-11-26 12:00:05,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:05,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:05,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:05,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:00:05,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:05,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1390129378, now seen corresponding path program 1 times [2023-11-26 12:00:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488354018] [2023-11-26 12:00:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:06,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488354018] [2023-11-26 12:00:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488354018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:00:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85476916] [2023-11-26 12:00:06,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:06,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:00:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:00:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:00:06,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-26 12:00:06,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 102 flow. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:06,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:06,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-26 12:00:06,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:07,336 INFO L124 PetriNetUnfolderBase]: 337/716 cut-off events. [2023-11-26 12:00:07,336 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2023-11-26 12:00:07,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 716 events. 337/716 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3996 event pairs, 54 based on Foata normal form. 12/723 useless extension candidates. Maximal degree in co-relation 1602. Up to 465 conditions per place. [2023-11-26 12:00:07,343 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 36 selfloop transitions, 12 changer transitions 17/78 dead transitions. [2023-11-26 12:00:07,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 351 flow [2023-11-26 12:00:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 265 transitions. [2023-11-26 12:00:07,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602536997885835 [2023-11-26 12:00:07,345 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 265 transitions. [2023-11-26 12:00:07,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 265 transitions. [2023-11-26 12:00:07,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:07,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 265 transitions. [2023-11-26 12:00:07,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 24.09090909090909) internal successors, (265), 11 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,349 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,349 INFO L175 Difference]: Start difference. First operand has 51 places, 31 transitions, 102 flow. Second operand 11 states and 265 transitions. [2023-11-26 12:00:07,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 351 flow [2023-11-26 12:00:07,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 319 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-26 12:00:07,355 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 164 flow [2023-11-26 12:00:07,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-26 12:00:07,356 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-11-26 12:00:07,356 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 164 flow [2023-11-26 12:00:07,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:07,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:07,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:00:07,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:07,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash 80088878, now seen corresponding path program 2 times [2023-11-26 12:00:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:07,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803456761] [2023-11-26 12:00:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:08,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:08,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803456761] [2023-11-26 12:00:08,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803456761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:08,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:08,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:00:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828189019] [2023-11-26 12:00:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:08,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:00:08,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:00:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:00:08,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-26 12:00:08,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 164 flow. Second operand has 10 states, 10 states have (on average 17.4) internal successors, (174), 10 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:08,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:08,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-26 12:00:08,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:09,263 INFO L124 PetriNetUnfolderBase]: 546/1041 cut-off events. [2023-11-26 12:00:09,263 INFO L125 PetriNetUnfolderBase]: For 555/558 co-relation queries the response was YES. [2023-11-26 12:00:09,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1041 events. 546/1041 cut-off events. For 555/558 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5407 event pairs, 333 based on Foata normal form. 22/1050 useless extension candidates. Maximal degree in co-relation 2627. Up to 816 conditions per place. [2023-11-26 12:00:09,275 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 41 selfloop transitions, 11 changer transitions 23/86 dead transitions. [2023-11-26 12:00:09,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 462 flow [2023-11-26 12:00:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:00:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2023-11-26 12:00:09,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400516795865633 [2023-11-26 12:00:09,278 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 209 transitions. [2023-11-26 12:00:09,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 209 transitions. [2023-11-26 12:00:09,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:09,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 209 transitions. [2023-11-26 12:00:09,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,282 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,282 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 164 flow. Second operand 9 states and 209 transitions. [2023-11-26 12:00:09,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 462 flow [2023-11-26 12:00:09,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 446 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:09,291 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 257 flow [2023-11-26 12:00:09,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2023-11-26 12:00:09,293 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-26 12:00:09,293 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 257 flow [2023-11-26 12:00:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 10 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:09,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:09,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:00:09,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:09,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:09,295 INFO L85 PathProgramCache]: Analyzing trace with hash -187975925, now seen corresponding path program 1 times [2023-11-26 12:00:09,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:09,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025644557] [2023-11-26 12:00:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:09,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:09,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025644557] [2023-11-26 12:00:09,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025644557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:09,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:09,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:09,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145516043] [2023-11-26 12:00:09,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:09,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:09,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:09,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2023-11-26 12:00:09,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:09,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2023-11-26 12:00:09,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:09,848 INFO L124 PetriNetUnfolderBase]: 428/848 cut-off events. [2023-11-26 12:00:09,849 INFO L125 PetriNetUnfolderBase]: For 399/402 co-relation queries the response was YES. [2023-11-26 12:00:09,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 848 events. 428/848 cut-off events. For 399/402 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4238 event pairs, 94 based on Foata normal form. 63/902 useless extension candidates. Maximal degree in co-relation 2106. Up to 400 conditions per place. [2023-11-26 12:00:09,859 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-11-26 12:00:09,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 313 flow [2023-11-26 12:00:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-26 12:00:09,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2023-11-26 12:00:09,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-26 12:00:09,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-26 12:00:09,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:09,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-26 12:00:09,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,864 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 257 flow. Second operand 4 states and 110 transitions. [2023-11-26 12:00:09,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 313 flow [2023-11-26 12:00:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 274 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-11-26 12:00:09,872 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 161 flow [2023-11-26 12:00:09,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-11-26 12:00:09,874 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-26 12:00:09,874 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 161 flow [2023-11-26 12:00:09,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:09,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:09,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:00:09,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:09,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash -522090648, now seen corresponding path program 1 times [2023-11-26 12:00:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:09,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957815843] [2023-11-26 12:00:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:11,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:11,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957815843] [2023-11-26 12:00:11,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957815843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:11,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:11,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:00:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988720515] [2023-11-26 12:00:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:11,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:00:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:00:11,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:00:11,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-26 12:00:11,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 161 flow. Second operand has 10 states, 10 states have (on average 19.5) internal successors, (195), 10 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:11,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-26 12:00:11,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:11,954 INFO L124 PetriNetUnfolderBase]: 425/992 cut-off events. [2023-11-26 12:00:11,954 INFO L125 PetriNetUnfolderBase]: For 406/456 co-relation queries the response was YES. [2023-11-26 12:00:11,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 992 events. 425/992 cut-off events. For 406/456 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6365 event pairs, 129 based on Foata normal form. 17/971 useless extension candidates. Maximal degree in co-relation 2471. Up to 359 conditions per place. [2023-11-26 12:00:11,961 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 43 selfloop transitions, 14 changer transitions 10/83 dead transitions. [2023-11-26 12:00:11,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 431 flow [2023-11-26 12:00:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:00:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2023-11-26 12:00:11,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58656330749354 [2023-11-26 12:00:11,964 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 227 transitions. [2023-11-26 12:00:11,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 227 transitions. [2023-11-26 12:00:11,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:11,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 227 transitions. [2023-11-26 12:00:11,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 25.22222222222222) internal successors, (227), 9 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,967 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,967 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 161 flow. Second operand 9 states and 227 transitions. [2023-11-26 12:00:11,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 431 flow [2023-11-26 12:00:11,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:11,971 INFO L231 Difference]: Finished difference. Result has 66 places, 47 transitions, 241 flow [2023-11-26 12:00:11,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=241, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2023-11-26 12:00:11,972 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2023-11-26 12:00:11,972 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 241 flow [2023-11-26 12:00:11,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.5) internal successors, (195), 10 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:11,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:11,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:00:11,973 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:11,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1684836812, now seen corresponding path program 2 times [2023-11-26 12:00:11,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:11,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118654328] [2023-11-26 12:00:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118654328] [2023-11-26 12:00:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118654328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:12,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:12,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:12,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787454381] [2023-11-26 12:00:12,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:12,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:12,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:12,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2023-11-26 12:00:12,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:12,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:12,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2023-11-26 12:00:12,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:12,441 INFO L124 PetriNetUnfolderBase]: 433/902 cut-off events. [2023-11-26 12:00:12,441 INFO L125 PetriNetUnfolderBase]: For 1020/1024 co-relation queries the response was YES. [2023-11-26 12:00:12,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 902 events. 433/902 cut-off events. For 1020/1024 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5030 event pairs, 90 based on Foata normal form. 68/962 useless extension candidates. Maximal degree in co-relation 2774. Up to 414 conditions per place. [2023-11-26 12:00:12,447 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 29 selfloop transitions, 6 changer transitions 20/64 dead transitions. [2023-11-26 12:00:12,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 415 flow [2023-11-26 12:00:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2023-11-26 12:00:12,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767441860465117 [2023-11-26 12:00:12,449 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2023-11-26 12:00:12,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2023-11-26 12:00:12,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:12,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2023-11-26 12:00:12,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:12,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:12,451 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:12,451 INFO L175 Difference]: Start difference. First operand has 66 places, 47 transitions, 241 flow. Second operand 5 states and 124 transitions. [2023-11-26 12:00:12,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 415 flow [2023-11-26 12:00:12,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 395 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:12,457 INFO L231 Difference]: Finished difference. Result has 66 places, 35 transitions, 172 flow [2023-11-26 12:00:12,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=66, PETRI_TRANSITIONS=35} [2023-11-26 12:00:12,458 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2023-11-26 12:00:12,458 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 35 transitions, 172 flow [2023-11-26 12:00:12,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:12,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:12,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:12,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:00:12,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 12:00:12,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash 385300372, now seen corresponding path program 1 times [2023-11-26 12:00:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832589569] [2023-11-26 12:00:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832589569] [2023-11-26 12:00:16,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832589569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:16,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:16,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 12:00:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743830427] [2023-11-26 12:00:16,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:00:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:00:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:16,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-26 12:00:16,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 35 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:16,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-26 12:00:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:17,189 INFO L124 PetriNetUnfolderBase]: 47/120 cut-off events. [2023-11-26 12:00:17,189 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-26 12:00:17,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 120 events. 47/120 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 275 event pairs, 6 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 339. Up to 35 conditions per place. [2023-11-26 12:00:17,191 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-11-26 12:00:17,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 44 transitions, 259 flow [2023-11-26 12:00:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:00:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2023-11-26 12:00:17,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49870801033591733 [2023-11-26 12:00:17,194 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 193 transitions. [2023-11-26 12:00:17,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 193 transitions. [2023-11-26 12:00:17,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:17,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 193 transitions. [2023-11-26 12:00:17,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.444444444444443) internal successors, (193), 9 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) [2023-11-26 12:00:17,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:17,197 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:17,198 INFO L175 Difference]: Start difference. First operand has 66 places, 35 transitions, 172 flow. Second operand 9 states and 193 transitions. [2023-11-26 12:00:17,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 44 transitions, 259 flow [2023-11-26 12:00:17,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 192 flow, removed 12 selfloop flow, removed 18 redundant places. [2023-11-26 12:00:17,200 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-11-26 12:00:17,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-11-26 12:00:17,202 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-11-26 12:00:17,202 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-11-26 12:00:17,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:17,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-11-26 12:00:17,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-26 12:00:17,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-26 12:00:17,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-26 12:00:17,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-26 12:00:17,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-11-26 12:00:17,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-11-26 12:00:17,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-11-26 12:00:17,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-11-26 12:00:17,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-11-26 12:00:17,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:00:17,209 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:17,218 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:00:17,218 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:00:17,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:00:17 BasicIcfg [2023-11-26 12:00:17,229 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:00:17,230 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:00:17,230 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:00:17,230 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:00:17,231 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:58" (3/4) ... [2023-11-26 12:00:17,233 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:00:17,237 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 12:00:17,237 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 12:00:17,247 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2023-11-26 12:00:17,248 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-26 12:00:17,248 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 12:00:17,249 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 12:00:17,378 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:00:17,378 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:00:17,378 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:00:17,379 INFO L158 Benchmark]: Toolchain (without parser) took 20964.96ms. Allocated memory was 146.8MB in the beginning and 360.7MB in the end (delta: 213.9MB). Free memory was 100.0MB in the beginning and 175.5MB in the end (delta: -75.5MB). Peak memory consumption was 139.6MB. Max. memory is 16.1GB. [2023-11-26 12:00:17,380 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 146.8MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:17,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.36ms. Allocated memory is still 146.8MB. Free memory was 99.6MB in the beginning and 74.1MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:17,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.92ms. Allocated memory is still 146.8MB. Free memory was 74.1MB in the beginning and 70.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:17,382 INFO L158 Benchmark]: Boogie Preprocessor took 128.84ms. Allocated memory is still 146.8MB. Free memory was 70.7MB in the beginning and 115.3MB in the end (delta: -44.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-11-26 12:00:17,382 INFO L158 Benchmark]: RCFGBuilder took 1089.82ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 115.3MB in the beginning and 119.5MB in the end (delta: -4.3MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2023-11-26 12:00:17,383 INFO L158 Benchmark]: TraceAbstraction took 18796.42ms. Allocated memory was 207.6MB in the beginning and 360.7MB in the end (delta: 153.1MB). Free memory was 119.5MB in the beginning and 180.8MB in the end (delta: -61.2MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. [2023-11-26 12:00:17,383 INFO L158 Benchmark]: Witness Printer took 148.78ms. Allocated memory is still 360.7MB. Free memory was 180.8MB in the beginning and 175.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:17,387 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 146.8MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.36ms. Allocated memory is still 146.8MB. Free memory was 99.6MB in the beginning and 74.1MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.92ms. Allocated memory is still 146.8MB. Free memory was 74.1MB in the beginning and 70.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 128.84ms. Allocated memory is still 146.8MB. Free memory was 70.7MB in the beginning and 115.3MB in the end (delta: -44.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1089.82ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 115.3MB in the beginning and 119.5MB in the end (delta: -4.3MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18796.42ms. Allocated memory was 207.6MB in the beginning and 360.7MB in the end (delta: 153.1MB). Free memory was 119.5MB in the beginning and 180.8MB in the end (delta: -61.2MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. * Witness Printer took 148.78ms. Allocated memory is still 360.7MB. Free memory was 180.8MB in the beginning and 175.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 824]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 61 locations, 10 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: 18.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 529 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 468 mSDsluCounter, 195 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 156 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1833 IncrementalHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 39 mSDtfsCounter, 1833 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=11, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 2133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 12:00:17,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9cdf3c1-08eb-4fcd-a5ab-9c4c04d5fbcd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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