./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-2.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_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI --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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:46:58,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:46:58,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:46:58,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:46:58,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:46:59,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:46:59,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:46:59,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:46:59,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:46:59,028 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:46:59,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:46:59,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:46:59,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:46:59,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:46:59,034 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:46:59,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:46:59,035 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:46:59,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:46:59,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:46:59,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:46:59,037 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:46:59,038 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:46:59,039 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:46:59,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:46:59,040 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:46:59,040 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:46:59,041 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:46:59,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:46:59,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:46:59,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:46:59,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:46:59,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:46:59,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:59,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:46:59,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:46:59,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:46:59,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:46:59,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:46:59,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:46:59,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:46:59,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:46:59,048 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_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2023-11-24 21:46:59,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:46:59,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:46:59,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:46:59,413 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:46:59,413 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:46:59,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread/triangular-2.i [2023-11-24 21:47:02,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:47:02,891 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:47:02,892 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/sv-benchmarks/c/pthread/triangular-2.i [2023-11-24 21:47:02,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data/bfabd8a3f/a7f9f234a24f45a9b86d6f289c0cf086/FLAG659a6d44c [2023-11-24 21:47:02,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data/bfabd8a3f/a7f9f234a24f45a9b86d6f289c0cf086 [2023-11-24 21:47:02,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:47:02,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:47:02,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:02,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:47:02,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:47:02,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:02" (1/1) ... [2023-11-24 21:47:02,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a8a2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:02, skipping insertion in model container [2023-11-24 21:47:02,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:02" (1/1) ... [2023-11-24 21:47:03,029 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:47:03,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:03,524 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:47:03,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:03,638 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:47:03,638 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:47:03,647 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:47:03,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03 WrapperNode [2023-11-24 21:47:03,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:03,649 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:03,649 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:47:03,649 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:47:03,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,704 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-24 21:47:03,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:03,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:47:03,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:47:03,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:47:03,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,737 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]. [2023-11-24 21:47:03,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:47:03,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:47:03,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:47:03,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:47:03,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (1/1) ... [2023-11-24 21:47:03,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:03,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:47:03,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:47:03,841 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-24 21:47:03,841 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-24 21:47:03,841 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-24 21:47:03,842 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-24 21:47:03,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:47:03,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:47:03,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:47:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:47:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:47:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:47:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:47:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:47:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:47:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:47:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:47:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:47:03,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:47:03,846 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:47:04,004 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:47:04,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:47:04,177 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:47:04,344 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:47:04,344 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 21:47:04,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:04 BoogieIcfgContainer [2023-11-24 21:47:04,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:47:04,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:47:04,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:47:04,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:47:04,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:47:02" (1/3) ... [2023-11-24 21:47:04,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d888fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:04, skipping insertion in model container [2023-11-24 21:47:04,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:03" (2/3) ... [2023-11-24 21:47:04,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d888fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:04, skipping insertion in model container [2023-11-24 21:47:04,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:04" (3/3) ... [2023-11-24 21:47:04,365 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-11-24 21:47:04,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:47:04,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 21:47:04,400 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:47:04,443 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:47:04,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-24 21:47:04,517 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-24 21:47:04,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:04,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-24 21:47:04,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-24 21:47:04,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-24 21:47:04,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:47:04,545 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;@48467d66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:47:04,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-24 21:47:04,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:47:04,550 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:47:04,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:04,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:04,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:47:04,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:04,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:04,558 INFO L85 PathProgramCache]: Analyzing trace with hash 6737, now seen corresponding path program 1 times [2023-11-24 21:47:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087577539] [2023-11-24 21:47:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:04,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:04,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087577539] [2023-11-24 21:47:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087577539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:04,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:04,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856678603] [2023-11-24 21:47:04,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:04,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:05,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:05,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-24 21:47:05,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:05,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-24 21:47:05,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:05,190 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-24 21:47:05,190 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:47:05,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-24 21:47:05,196 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-24 21:47:05,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-24 21:47:05,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:05,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-24 21:47:05,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-24 21:47:05,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-24 21:47:05,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-24 21:47:05,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:05,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-24 21:47:05,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,225 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-24 21:47:05,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-24 21:47:05,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:05,231 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-24 21:47:05,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-24 21:47:05,238 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-24 21:47:05,238 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-24 21:47:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:05,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:47:05,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:47:05,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:05,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 6738, now seen corresponding path program 1 times [2023-11-24 21:47:05,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650376570] [2023-11-24 21:47:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:05,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:05,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:05,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650376570] [2023-11-24 21:47:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650376570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:05,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:05,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918975809] [2023-11-24 21:47:05,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:05,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:05,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:05,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:05,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:47:05,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:05,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:47:05,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:05,494 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-24 21:47:05,494 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:05,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-24 21:47:05,498 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-24 21:47:05,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-24 21:47:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:05,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-24 21:47:05,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-24 21:47:05,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-24 21:47:05,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-24 21:47:05,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:05,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-24 21:47:05,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,504 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-24 21:47:05,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-24 21:47:05,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:05,507 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-24 21:47:05,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-24 21:47:05,511 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-24 21:47:05,511 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-24 21:47:05,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:05,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:47:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:47:05,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:05,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash 200868327, now seen corresponding path program 1 times [2023-11-24 21:47:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:05,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940402925] [2023-11-24 21:47:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:05,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:05,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:05,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940402925] [2023-11-24 21:47:05,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940402925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:05,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:05,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:05,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001164906] [2023-11-24 21:47:05,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:05,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:05,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:47:05,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:05,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:47:05,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:05,687 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-24 21:47:05,687 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:05,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-24 21:47:05,690 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-24 21:47:05,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-24 21:47:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-24 21:47:05,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-24 21:47:05,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-24 21:47:05,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-24 21:47:05,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:05,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-24 21:47:05,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,695 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-24 21:47:05,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-24 21:47:05,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:05,697 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-24 21:47:05,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-24 21:47:05,698 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-24 21:47:05,698 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-24 21:47:05,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:05,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:47:05,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:47:05,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:05,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash 200868326, now seen corresponding path program 1 times [2023-11-24 21:47:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:05,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963361358] [2023-11-24 21:47:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963361358] [2023-11-24 21:47:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963361358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034865171] [2023-11-24 21:47:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:05,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-24 21:47:05,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:05,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-24 21:47:05,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:05,872 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-24 21:47:05,872 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:05,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-24 21:47:05,875 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-24 21:47:05,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-24 21:47:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-24 21:47:05,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-24 21:47:05,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-24 21:47:05,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-24 21:47:05,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:05,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-24 21:47:05,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,895 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-24 21:47:05,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-24 21:47:05,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:05,902 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-24 21:47:05,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-24 21:47:05,904 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-24 21:47:05,904 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-24 21:47:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:05,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:05,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:47:05,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:05,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1605654404, now seen corresponding path program 1 times [2023-11-24 21:47:05,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:05,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977647343] [2023-11-24 21:47:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:05,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:06,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977647343] [2023-11-24 21:47:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977647343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179320546] [2023-11-24 21:47:06,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:06,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:06,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:47:06,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:06,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:47:06,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:06,278 INFO L124 PetriNetUnfolderBase]: 70/154 cut-off events. [2023-11-24 21:47:06,283 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:06,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 154 events. 70/154 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 550 event pairs, 32 based on Foata normal form. 9/148 useless extension candidates. Maximal degree in co-relation 277. Up to 86 conditions per place. [2023-11-24 21:47:06,288 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 11 selfloop transitions, 1 changer transitions 7/30 dead transitions. [2023-11-24 21:47:06,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 106 flow [2023-11-24 21:47:06,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-24 21:47:06,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-24 21:47:06,291 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-24 21:47:06,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-24 21:47:06,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:06,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-24 21:47:06,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:06,295 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:06,295 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 88 transitions. [2023-11-24 21:47:06,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 106 flow [2023-11-24 21:47:06,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:06,299 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 52 flow [2023-11-24 21:47:06,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-24 21:47:06,303 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-24 21:47:06,303 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 52 flow [2023-11-24 21:47:06,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:06,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:47:06,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:06,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1605653309, now seen corresponding path program 1 times [2023-11-24 21:47:06,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948806392] [2023-11-24 21:47:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:06,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:06,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948806392] [2023-11-24 21:47:06,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948806392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:06,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:47:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722687478] [2023-11-24 21:47:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:47:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:47:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:47:06,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:06,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:06,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:06,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:06,730 INFO L124 PetriNetUnfolderBase]: 273/483 cut-off events. [2023-11-24 21:47:06,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:06,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 483 events. 273/483 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1906 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 917. Up to 181 conditions per place. [2023-11-24 21:47:06,734 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 4 changer transitions 20/55 dead transitions. [2023-11-24 21:47:06,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 214 flow [2023-11-24 21:47:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:47:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:47:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2023-11-24 21:47:06,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-24 21:47:06,738 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 129 transitions. [2023-11-24 21:47:06,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 129 transitions. [2023-11-24 21:47:06,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:06,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 129 transitions. [2023-11-24 21:47:06,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,745 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,745 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 6 states and 129 transitions. [2023-11-24 21:47:06,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 214 flow [2023-11-24 21:47:06,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:47:06,748 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 78 flow [2023-11-24 21:47:06,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-24 21:47:06,751 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-24 21:47:06,751 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 78 flow [2023-11-24 21:47:06,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:06,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:47:06,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:06,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash -204762607, now seen corresponding path program 1 times [2023-11-24 21:47:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041220696] [2023-11-24 21:47:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:06,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:06,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041220696] [2023-11-24 21:47:06,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041220696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:06,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:06,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:47:06,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962904645] [2023-11-24 21:47:06,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:06,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:47:06,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:06,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:47:06,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:06,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:06,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:06,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:06,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:06,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:07,188 INFO L124 PetriNetUnfolderBase]: 382/711 cut-off events. [2023-11-24 21:47:07,188 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2023-11-24 21:47:07,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 711 events. 382/711 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3123 event pairs, 65 based on Foata normal form. 33/743 useless extension candidates. Maximal degree in co-relation 1598. Up to 246 conditions per place. [2023-11-24 21:47:07,195 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 9 changer transitions 20/81 dead transitions. [2023-11-24 21:47:07,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 81 transitions, 386 flow [2023-11-24 21:47:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:47:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:47:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2023-11-24 21:47:07,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-24 21:47:07,197 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 189 transitions. [2023-11-24 21:47:07,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 189 transitions. [2023-11-24 21:47:07,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:07,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 189 transitions. [2023-11-24 21:47:07,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.0) internal successors, (189), 9 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,200 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,200 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 78 flow. Second operand 9 states and 189 transitions. [2023-11-24 21:47:07,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 81 transitions, 386 flow [2023-11-24 21:47:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 81 transitions, 370 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:07,206 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 163 flow [2023-11-24 21:47:07,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-11-24 21:47:07,207 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-24 21:47:07,207 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 163 flow [2023-11-24 21:47:07,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:07,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:07,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:47:07,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:07,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1564829837, now seen corresponding path program 2 times [2023-11-24 21:47:07,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:07,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671252284] [2023-11-24 21:47:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:07,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671252284] [2023-11-24 21:47:07,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671252284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:07,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:07,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:47:07,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160645322] [2023-11-24 21:47:07,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:07,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:47:07,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:07,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:47:07,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:07,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:07,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:07,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:07,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:07,590 INFO L124 PetriNetUnfolderBase]: 328/618 cut-off events. [2023-11-24 21:47:07,590 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2023-11-24 21:47:07,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 618 events. 328/618 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2626 event pairs, 65 based on Foata normal form. 57/674 useless extension candidates. Maximal degree in co-relation 1730. Up to 234 conditions per place. [2023-11-24 21:47:07,596 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 9 changer transitions 28/81 dead transitions. [2023-11-24 21:47:07,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 81 transitions, 503 flow [2023-11-24 21:47:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:47:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:47:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2023-11-24 21:47:07,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2023-11-24 21:47:07,598 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 167 transitions. [2023-11-24 21:47:07,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 167 transitions. [2023-11-24 21:47:07,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:07,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 167 transitions. [2023-11-24 21:47:07,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,601 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,601 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 163 flow. Second operand 8 states and 167 transitions. [2023-11-24 21:47:07,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 81 transitions, 503 flow [2023-11-24 21:47:07,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 495 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:07,608 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 217 flow [2023-11-24 21:47:07,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2023-11-24 21:47:07,609 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-11-24 21:47:07,609 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 217 flow [2023-11-24 21:47:07,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:07,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:07,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:47:07,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:07,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1376396266, now seen corresponding path program 1 times [2023-11-24 21:47:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815027750] [2023-11-24 21:47:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815027750] [2023-11-24 21:47:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815027750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:47:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495554990] [2023-11-24 21:47:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:07,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:47:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:47:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:47:07,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:07,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:07,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:07,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:08,158 INFO L124 PetriNetUnfolderBase]: 337/630 cut-off events. [2023-11-24 21:47:08,159 INFO L125 PetriNetUnfolderBase]: For 1703/1715 co-relation queries the response was YES. [2023-11-24 21:47:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 630 events. 337/630 cut-off events. For 1703/1715 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2667 event pairs, 68 based on Foata normal form. 30/659 useless extension candidates. Maximal degree in co-relation 1933. Up to 237 conditions per place. [2023-11-24 21:47:08,166 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 16 changer transitions 24/92 dead transitions. [2023-11-24 21:47:08,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 614 flow [2023-11-24 21:47:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:47:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:47:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-24 21:47:08,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792207792207792 [2023-11-24 21:47:08,168 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-24 21:47:08,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-24 21:47:08,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:08,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-24 21:47:08,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,172 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,172 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 217 flow. Second operand 11 states and 223 transitions. [2023-11-24 21:47:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 614 flow [2023-11-24 21:47:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 92 transitions, 547 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-11-24 21:47:08,182 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 286 flow [2023-11-24 21:47:08,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=286, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-11-24 21:47:08,183 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-11-24 21:47:08,183 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 286 flow [2023-11-24 21:47:08,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:08,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:08,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:47:08,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:08,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash 312700604, now seen corresponding path program 2 times [2023-11-24 21:47:08,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:08,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049646682] [2023-11-24 21:47:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:08,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:08,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049646682] [2023-11-24 21:47:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049646682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:08,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:08,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:47:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111963066] [2023-11-24 21:47:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:08,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:47:08,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:47:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:47:08,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:08,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:08,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:08,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:08,666 INFO L124 PetriNetUnfolderBase]: 508/942 cut-off events. [2023-11-24 21:47:08,667 INFO L125 PetriNetUnfolderBase]: For 3228/3246 co-relation queries the response was YES. [2023-11-24 21:47:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 942 events. 508/942 cut-off events. For 3228/3246 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4345 event pairs, 53 based on Foata normal form. 45/984 useless extension candidates. Maximal degree in co-relation 3063. Up to 253 conditions per place. [2023-11-24 21:47:08,678 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 57 selfloop transitions, 20 changer transitions 23/106 dead transitions. [2023-11-24 21:47:08,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 778 flow [2023-11-24 21:47:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:47:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:47:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-24 21:47:08,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948051948051948 [2023-11-24 21:47:08,680 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-24 21:47:08,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-24 21:47:08,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:08,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-24 21:47:08,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,683 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,683 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 286 flow. Second operand 11 states and 229 transitions. [2023-11-24 21:47:08,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 778 flow [2023-11-24 21:47:08,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 712 flow, removed 27 selfloop flow, removed 4 redundant places. [2023-11-24 21:47:08,697 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 383 flow [2023-11-24 21:47:08,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=383, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2023-11-24 21:47:08,698 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-11-24 21:47:08,698 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 383 flow [2023-11-24 21:47:08,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:08,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:08,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:47:08,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:08,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1152289066, now seen corresponding path program 3 times [2023-11-24 21:47:08,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:08,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221085652] [2023-11-24 21:47:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:08,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:08,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221085652] [2023-11-24 21:47:08,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221085652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:08,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:08,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:47:08,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981422742] [2023-11-24 21:47:08,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:08,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:47:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:47:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:47:08,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:08,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:08,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:08,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:09,191 INFO L124 PetriNetUnfolderBase]: 481/897 cut-off events. [2023-11-24 21:47:09,191 INFO L125 PetriNetUnfolderBase]: For 5148/5166 co-relation queries the response was YES. [2023-11-24 21:47:09,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 897 events. 481/897 cut-off events. For 5148/5166 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4091 event pairs, 59 based on Foata normal form. 63/957 useless extension candidates. Maximal degree in co-relation 3369. Up to 154 conditions per place. [2023-11-24 21:47:09,201 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 45 selfloop transitions, 25 changer transitions 33/109 dead transitions. [2023-11-24 21:47:09,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 971 flow [2023-11-24 21:47:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:47:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:47:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2023-11-24 21:47:09,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.587012987012987 [2023-11-24 21:47:09,203 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 226 transitions. [2023-11-24 21:47:09,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 226 transitions. [2023-11-24 21:47:09,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:09,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 226 transitions. [2023-11-24 21:47:09,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.545454545454547) internal successors, (226), 11 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:09,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:09,206 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:09,207 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 383 flow. Second operand 11 states and 226 transitions. [2023-11-24 21:47:09,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 971 flow [2023-11-24 21:47:09,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 900 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-24 21:47:09,229 INFO L231 Difference]: Finished difference. Result has 77 places, 51 transitions, 482 flow [2023-11-24 21:47:09,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=482, PETRI_PLACES=77, PETRI_TRANSITIONS=51} [2023-11-24 21:47:09,230 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2023-11-24 21:47:09,230 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 51 transitions, 482 flow [2023-11-24 21:47:09,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:09,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:09,231 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:09,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:47:09,232 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:09,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash -112936374, now seen corresponding path program 1 times [2023-11-24 21:47:09,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:09,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735306092] [2023-11-24 21:47:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:09,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:09,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735306092] [2023-11-24 21:47:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735306092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:47:09,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105598766] [2023-11-24 21:47:09,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:09,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:47:09,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:09,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:47:09,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:47:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:09,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:09,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:09,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:09,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105598766] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:09,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:47:09,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-24 21:47:09,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998279384] [2023-11-24 21:47:09,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:09,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:47:09,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:47:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:47:09,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:09,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 51 transitions, 482 flow. Second operand has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:09,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:09,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:09,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:10,474 INFO L124 PetriNetUnfolderBase]: 589/1107 cut-off events. [2023-11-24 21:47:10,474 INFO L125 PetriNetUnfolderBase]: For 10463/10481 co-relation queries the response was YES. [2023-11-24 21:47:10,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 1107 events. 589/1107 cut-off events. For 10463/10481 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4796 event pairs, 149 based on Foata normal form. 81/1187 useless extension candidates. Maximal degree in co-relation 4716. Up to 522 conditions per place. [2023-11-24 21:47:10,485 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 67 selfloop transitions, 17 changer transitions 67/157 dead transitions. [2023-11-24 21:47:10,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 157 transitions, 1554 flow [2023-11-24 21:47:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 21:47:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-24 21:47:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 383 transitions. [2023-11-24 21:47:10,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759398496240602 [2023-11-24 21:47:10,488 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 383 transitions. [2023-11-24 21:47:10,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 383 transitions. [2023-11-24 21:47:10,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:10,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 383 transitions. [2023-11-24 21:47:10,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 20.157894736842106) internal successors, (383), 19 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:10,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:10,493 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:10,493 INFO L175 Difference]: Start difference. First operand has 77 places, 51 transitions, 482 flow. Second operand 19 states and 383 transitions. [2023-11-24 21:47:10,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 157 transitions, 1554 flow [2023-11-24 21:47:10,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 157 transitions, 1455 flow, removed 33 selfloop flow, removed 8 redundant places. [2023-11-24 21:47:10,521 INFO L231 Difference]: Finished difference. Result has 97 places, 57 transitions, 611 flow [2023-11-24 21:47:10,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=611, PETRI_PLACES=97, PETRI_TRANSITIONS=57} [2023-11-24 21:47:10,522 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2023-11-24 21:47:10,522 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 57 transitions, 611 flow [2023-11-24 21:47:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:10,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:10,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:10,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:10,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 21:47:10,730 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:10,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:10,730 INFO L85 PathProgramCache]: Analyzing trace with hash -849015018, now seen corresponding path program 2 times [2023-11-24 21:47:10,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:10,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171458884] [2023-11-24 21:47:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:10,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171458884] [2023-11-24 21:47:10,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171458884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:47:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854120528] [2023-11-24 21:47:10,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:47:10,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:47:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:10,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:47:10,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:47:11,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:47:11,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:11,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:11,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:11,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854120528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:11,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:47:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-24 21:47:11,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219357138] [2023-11-24 21:47:11,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:11,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:47:11,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:47:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:47:11,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:11,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 57 transitions, 611 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:11,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:11,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:11,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:12,198 INFO L124 PetriNetUnfolderBase]: 877/1635 cut-off events. [2023-11-24 21:47:12,198 INFO L125 PetriNetUnfolderBase]: For 36551/36569 co-relation queries the response was YES. [2023-11-24 21:47:12,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9243 conditions, 1635 events. 877/1635 cut-off events. For 36551/36569 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7950 event pairs, 68 based on Foata normal form. 90/1724 useless extension candidates. Maximal degree in co-relation 9200. Up to 312 conditions per place. [2023-11-24 21:47:12,219 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 88 selfloop transitions, 47 changer transitions 80/221 dead transitions. [2023-11-24 21:47:12,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 221 transitions, 2813 flow [2023-11-24 21:47:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 21:47:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-24 21:47:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 550 transitions. [2023-11-24 21:47:12,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.582010582010582 [2023-11-24 21:47:12,224 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 550 transitions. [2023-11-24 21:47:12,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 550 transitions. [2023-11-24 21:47:12,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:12,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 550 transitions. [2023-11-24 21:47:12,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 20.37037037037037) internal successors, (550), 27 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,231 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,231 INFO L175 Difference]: Start difference. First operand has 97 places, 57 transitions, 611 flow. Second operand 27 states and 550 transitions. [2023-11-24 21:47:12,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 221 transitions, 2813 flow [2023-11-24 21:47:12,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 221 transitions, 2269 flow, removed 261 selfloop flow, removed 12 redundant places. [2023-11-24 21:47:12,289 INFO L231 Difference]: Finished difference. Result has 123 places, 73 transitions, 1014 flow [2023-11-24 21:47:12,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1014, PETRI_PLACES=123, PETRI_TRANSITIONS=73} [2023-11-24 21:47:12,291 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 87 predicate places. [2023-11-24 21:47:12,291 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 73 transitions, 1014 flow [2023-11-24 21:47:12,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:12,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:12,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 21:47:12,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 21:47:12,498 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:12,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash -842807811, now seen corresponding path program 1 times [2023-11-24 21:47:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:12,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406348618] [2023-11-24 21:47:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406348618] [2023-11-24 21:47:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406348618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:47:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721430836] [2023-11-24 21:47:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:12,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:47:12,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:12,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:47:12,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:47:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:12,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:47:12,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:12,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:13,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721430836] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:13,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:47:13,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-11-24 21:47:13,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269395353] [2023-11-24 21:47:13,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:13,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 21:47:13,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 21:47:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-24 21:47:13,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:13,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 73 transitions, 1014 flow. Second operand has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:13,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:13,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:13,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:14,084 INFO L124 PetriNetUnfolderBase]: 1111/2104 cut-off events. [2023-11-24 21:47:14,084 INFO L125 PetriNetUnfolderBase]: For 86450/86456 co-relation queries the response was YES. [2023-11-24 21:47:14,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14615 conditions, 2104 events. 1111/2104 cut-off events. For 86450/86456 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11023 event pairs, 153 based on Foata normal form. 69/2170 useless extension candidates. Maximal degree in co-relation 14560. Up to 490 conditions per place. [2023-11-24 21:47:14,120 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 99 selfloop transitions, 51 changer transitions 67/223 dead transitions. [2023-11-24 21:47:14,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 223 transitions, 3626 flow [2023-11-24 21:47:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-24 21:47:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-24 21:47:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 509 transitions. [2023-11-24 21:47:14,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5817142857142857 [2023-11-24 21:47:14,125 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 509 transitions. [2023-11-24 21:47:14,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 509 transitions. [2023-11-24 21:47:14,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:14,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 509 transitions. [2023-11-24 21:47:14,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 20.36) internal successors, (509), 25 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,138 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,138 INFO L175 Difference]: Start difference. First operand has 123 places, 73 transitions, 1014 flow. Second operand 25 states and 509 transitions. [2023-11-24 21:47:14,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 223 transitions, 3626 flow [2023-11-24 21:47:14,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 223 transitions, 3046 flow, removed 274 selfloop flow, removed 15 redundant places. [2023-11-24 21:47:14,397 INFO L231 Difference]: Finished difference. Result has 139 places, 84 transitions, 1300 flow [2023-11-24 21:47:14,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1300, PETRI_PLACES=139, PETRI_TRANSITIONS=84} [2023-11-24 21:47:14,399 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 103 predicate places. [2023-11-24 21:47:14,399 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 84 transitions, 1300 flow [2023-11-24 21:47:14,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:14,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:14,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:14,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 21:47:14,606 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:14,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash 329646449, now seen corresponding path program 2 times [2023-11-24 21:47:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544637934] [2023-11-24 21:47:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:14,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:14,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544637934] [2023-11-24 21:47:14,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544637934] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:47:14,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285268472] [2023-11-24 21:47:14,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:47:14,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:47:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:14,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:47:14,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:47:14,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:47:14,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:14,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:47:14,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:15,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:15,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285268472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:15,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:47:15,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-24 21:47:15,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820993899] [2023-11-24 21:47:15,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:15,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 21:47:15,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:15,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 21:47:15,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:47:15,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:15,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 84 transitions, 1300 flow. Second operand has 16 states, 16 states have (on average 15.0625) internal successors, (241), 16 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:15,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:15,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:15,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:16,444 INFO L124 PetriNetUnfolderBase]: 1192/2279 cut-off events. [2023-11-24 21:47:16,445 INFO L125 PetriNetUnfolderBase]: For 130360/130366 co-relation queries the response was YES. [2023-11-24 21:47:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16888 conditions, 2279 events. 1192/2279 cut-off events. For 130360/130366 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11983 event pairs, 65 based on Foata normal form. 132/2408 useless extension candidates. Maximal degree in co-relation 16826. Up to 480 conditions per place. [2023-11-24 21:47:16,491 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 86 selfloop transitions, 74 changer transitions 89/255 dead transitions. [2023-11-24 21:47:16,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 255 transitions, 4848 flow [2023-11-24 21:47:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-24 21:47:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-24 21:47:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 529 transitions. [2023-11-24 21:47:16,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813186813186814 [2023-11-24 21:47:16,494 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 529 transitions. [2023-11-24 21:47:16,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 529 transitions. [2023-11-24 21:47:16,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:16,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 529 transitions. [2023-11-24 21:47:16,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 20.346153846153847) internal successors, (529), 26 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:16,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 35.0) internal successors, (945), 27 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:16,499 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 35.0) internal successors, (945), 27 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:16,500 INFO L175 Difference]: Start difference. First operand has 139 places, 84 transitions, 1300 flow. Second operand 26 states and 529 transitions. [2023-11-24 21:47:16,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 255 transitions, 4848 flow [2023-11-24 21:47:16,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 255 transitions, 4109 flow, removed 336 selfloop flow, removed 18 redundant places. [2023-11-24 21:47:16,809 INFO L231 Difference]: Finished difference. Result has 156 places, 103 transitions, 1857 flow [2023-11-24 21:47:16,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1857, PETRI_PLACES=156, PETRI_TRANSITIONS=103} [2023-11-24 21:47:16,812 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 120 predicate places. [2023-11-24 21:47:16,812 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 103 transitions, 1857 flow [2023-11-24 21:47:16,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.0625) internal successors, (241), 16 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:16,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:16,813 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:16,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:17,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 21:47:17,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:17,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 892975757, now seen corresponding path program 3 times [2023-11-24 21:47:17,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:17,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833368172] [2023-11-24 21:47:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833368172] [2023-11-24 21:47:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833368172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:47:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10377618] [2023-11-24 21:47:17,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:47:17,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:47:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:17,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:47:17,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:47:17,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 21:47:17,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:17,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:47:17,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:17,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:17,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10377618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:17,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:47:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 18 [2023-11-24 21:47:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413221416] [2023-11-24 21:47:17,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:17,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-24 21:47:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-24 21:47:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-24 21:47:17,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:17,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 103 transitions, 1857 flow. Second operand has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:17,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:17,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:17,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:19,288 INFO L124 PetriNetUnfolderBase]: 1426/2663 cut-off events. [2023-11-24 21:47:19,288 INFO L125 PetriNetUnfolderBase]: For 187469/187475 co-relation queries the response was YES. [2023-11-24 21:47:19,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21522 conditions, 2663 events. 1426/2663 cut-off events. For 187469/187475 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13616 event pairs, 40 based on Foata normal form. 60/2722 useless extension candidates. Maximal degree in co-relation 21452. Up to 558 conditions per place. [2023-11-24 21:47:19,331 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 114 selfloop transitions, 98 changer transitions 91/309 dead transitions. [2023-11-24 21:47:19,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 309 transitions, 6137 flow [2023-11-24 21:47:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-24 21:47:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-24 21:47:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 689 transitions. [2023-11-24 21:47:19,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789915966386555 [2023-11-24 21:47:19,334 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 689 transitions. [2023-11-24 21:47:19,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 689 transitions. [2023-11-24 21:47:19,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:19,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 689 transitions. [2023-11-24 21:47:19,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 20.264705882352942) internal successors, (689), 34 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 35.0) internal successors, (1225), 35 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,340 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 35.0) internal successors, (1225), 35 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,341 INFO L175 Difference]: Start difference. First operand has 156 places, 103 transitions, 1857 flow. Second operand 34 states and 689 transitions. [2023-11-24 21:47:19,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 309 transitions, 6137 flow [2023-11-24 21:47:19,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 309 transitions, 5148 flow, removed 468 selfloop flow, removed 17 redundant places. [2023-11-24 21:47:19,841 INFO L231 Difference]: Finished difference. Result has 181 places, 125 transitions, 2430 flow [2023-11-24 21:47:19,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2430, PETRI_PLACES=181, PETRI_TRANSITIONS=125} [2023-11-24 21:47:19,842 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 145 predicate places. [2023-11-24 21:47:19,843 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 125 transitions, 2430 flow [2023-11-24 21:47:19,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:19,843 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:19,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 21:47:20,050 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:20,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash -660601420, now seen corresponding path program 4 times [2023-11-24 21:47:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162011618] [2023-11-24 21:47:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:47:20,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:47:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:47:20,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:47:20,133 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:47:20,135 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-24 21:47:20,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-24 21:47:20,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-24 21:47:20,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-24 21:47:20,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-24 21:47:20,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-24 21:47:20,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-24 21:47:20,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-24 21:47:20,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:47:20,139 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:20,145 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:47:20,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:47:20,223 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-24 21:47:20,224 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-24 21:47:20,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:47:20 BasicIcfg [2023-11-24 21:47:20,257 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:47:20,258 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:47:20,258 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:47:20,258 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:47:20,259 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:04" (3/4) ... [2023-11-24 21:47:20,261 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:47:20,262 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:47:20,263 INFO L158 Benchmark]: Toolchain (without parser) took 17319.31ms. Allocated memory was 163.6MB in the beginning and 302.0MB in the end (delta: 138.4MB). Free memory was 116.0MB in the beginning and 160.1MB in the end (delta: -44.1MB). Peak memory consumption was 96.9MB. Max. memory is 16.1GB. [2023-11-24 21:47:20,263 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:47:20,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.77ms. Allocated memory is still 163.6MB. Free memory was 115.8MB in the beginning and 96.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:47:20,264 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.61ms. Allocated memory is still 163.6MB. Free memory was 96.1MB in the beginning and 94.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:47:20,264 INFO L158 Benchmark]: Boogie Preprocessor took 51.89ms. Allocated memory is still 163.6MB. Free memory was 94.0MB in the beginning and 91.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:47:20,265 INFO L158 Benchmark]: RCFGBuilder took 587.53ms. Allocated memory was 163.6MB in the beginning and 209.7MB in the end (delta: 46.1MB). Free memory was 91.9MB in the beginning and 176.4MB in the end (delta: -84.4MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-11-24 21:47:20,265 INFO L158 Benchmark]: TraceAbstraction took 15908.95ms. Allocated memory was 209.7MB in the beginning and 302.0MB in the end (delta: 92.3MB). Free memory was 175.7MB in the beginning and 160.1MB in the end (delta: 15.5MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. [2023-11-24 21:47:20,265 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 302.0MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:47:20,267 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.77ms. Allocated memory is still 163.6MB. Free memory was 115.8MB in the beginning and 96.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.61ms. Allocated memory is still 163.6MB. Free memory was 96.1MB in the beginning and 94.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.89ms. Allocated memory is still 163.6MB. Free memory was 94.0MB in the beginning and 91.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.53ms. Allocated memory was 163.6MB in the beginning and 209.7MB in the end (delta: 46.1MB). Free memory was 91.9MB in the beginning and 176.4MB in the end (delta: -84.4MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15908.95ms. Allocated memory was 209.7MB in the beginning and 302.0MB in the end (delta: 92.3MB). Free memory was 175.7MB in the beginning and 160.1MB in the end (delta: 15.5MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 302.0MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, condJ=1, i=15, id1={5:0}, id2={3:0}, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 44 locations, 8 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: 15.7s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1759 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1694 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3144 IncrementalHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 25 mSDtfsCounter, 3144 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2430occurred in iteration=16, InterpolantAutomatonStates: 203, 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, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 474 ConstructedInterpolants, 0 QuantifiedInterpolants, 1933 SizeOfPredicates, 27 NumberOfNonLiveVariables, 660 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 0/126 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:47:20,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI --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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:47:23,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:47:23,377 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:47:23,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:47:23,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:47:23,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:47:23,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:47:23,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:47:23,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:47:23,451 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:47:23,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:47:23,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:47:23,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:47:23,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:47:23,455 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:47:23,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:47:23,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:47:23,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:47:23,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:47:23,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:47:23,460 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:47:23,460 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:47:23,461 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:47:23,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:47:23,462 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:47:23,462 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:47:23,463 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:47:23,463 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:47:23,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:47:23,464 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:47:23,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:47:23,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:47:23,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:47:23,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:47:23,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:23,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:47:23,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:47:23,469 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:47:23,470 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:47:23,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:47:23,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:47:23,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:47:23,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:47:23,471 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:47:23,472 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_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2023-11-24 21:47:23,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:47:23,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:47:23,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:47:23,965 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:47:23,965 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:47:23,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread/triangular-2.i [2023-11-24 21:47:27,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:47:27,529 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:47:27,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/sv-benchmarks/c/pthread/triangular-2.i [2023-11-24 21:47:27,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data/676f5cde7/45d590c88c4b42babd7e29e8d7a975fa/FLAG17b70e208 [2023-11-24 21:47:27,573 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/data/676f5cde7/45d590c88c4b42babd7e29e8d7a975fa [2023-11-24 21:47:27,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:47:27,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:47:27,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:27,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:47:27,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:47:27,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:27" (1/1) ... [2023-11-24 21:47:27,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318b8eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:27, skipping insertion in model container [2023-11-24 21:47:27,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:27" (1/1) ... [2023-11-24 21:47:27,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:47:28,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:28,138 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:47:28,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:28,266 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:47:28,267 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:47:28,275 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:47:28,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28 WrapperNode [2023-11-24 21:47:28,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:28,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:28,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:47:28,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:47:28,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,351 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-24 21:47:28,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:28,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:47:28,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:47:28,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:47:28,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,406 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]. [2023-11-24 21:47:28,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:47:28,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:47:28,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:47:28,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:47:28,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (1/1) ... [2023-11-24 21:47:28,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:28,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:47:28,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:47:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-24 21:47:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-24 21:47:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-24 21:47:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-24 21:47:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:47:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:47:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:47:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:47:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:47:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:47:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:47:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:47:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:47:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:47:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:47:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:47:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:47:28,576 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:47:28,758 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:47:28,761 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:47:29,038 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:47:29,266 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:47:29,266 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 21:47:29,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:29 BoogieIcfgContainer [2023-11-24 21:47:29,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:47:29,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:47:29,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:47:29,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:47:29,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:47:27" (1/3) ... [2023-11-24 21:47:29,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a10975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:29, skipping insertion in model container [2023-11-24 21:47:29,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:28" (2/3) ... [2023-11-24 21:47:29,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a10975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:29, skipping insertion in model container [2023-11-24 21:47:29,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:29" (3/3) ... [2023-11-24 21:47:29,282 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-11-24 21:47:29,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:47:29,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 21:47:29,304 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:47:29,369 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:47:29,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-24 21:47:29,458 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-24 21:47:29,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:29,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-24 21:47:29,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-24 21:47:29,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-24 21:47:29,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:47:29,498 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;@31632a2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:47:29,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-24 21:47:29,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:47:29,504 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:47:29,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:29,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:29,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:47:29,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:29,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash 6801, now seen corresponding path program 1 times [2023-11-24 21:47:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:29,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958410458] [2023-11-24 21:47:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:29,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:29,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:29,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:29,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:47:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:29,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:47:29,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:29,783 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:47:29,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-24 21:47:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:29,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:29,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958410458] [2023-11-24 21:47:29,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958410458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:29,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:29,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:29,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345614475] [2023-11-24 21:47:29,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:29,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:29,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:29,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-24 21:47:29,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:29,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:29,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-24 21:47:29,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:30,101 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-24 21:47:30,101 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:47:30,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-24 21:47:30,109 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-24 21:47:30,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-24 21:47:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-24 21:47:30,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-24 21:47:30,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-24 21:47:30,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-24 21:47:30,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:30,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-24 21:47:30,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,142 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-24 21:47:30,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-24 21:47:30,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:30,149 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-24 21:47:30,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-24 21:47:30,155 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-24 21:47:30,156 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-24 21:47:30,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:30,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:47:30,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-24 21:47:30,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:30,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:30,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:30,360 INFO L85 PathProgramCache]: Analyzing trace with hash 6802, now seen corresponding path program 1 times [2023-11-24 21:47:30,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:30,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038652165] [2023-11-24 21:47:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:30,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:30,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:30,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:30,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:47:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:30,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:47:30,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:47:30,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-24 21:47:30,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-24 21:47:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:30,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:30,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038652165] [2023-11-24 21:47:30,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038652165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042256920] [2023-11-24 21:47:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:30,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:30,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:47:30,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:30,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:47:30,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:30,724 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-24 21:47:30,724 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:30,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-24 21:47:30,727 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-24 21:47:30,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-24 21:47:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-24 21:47:30,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-24 21:47:30,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-24 21:47:30,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-24 21:47:30,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:30,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-24 21:47:30,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,734 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-24 21:47:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-24 21:47:30,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:30,736 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-24 21:47:30,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-24 21:47:30,738 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-24 21:47:30,738 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-24 21:47:30,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:30,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:30,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:47:30,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:30,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:30,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:30,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 202776937, now seen corresponding path program 1 times [2023-11-24 21:47:30,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:30,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680628471] [2023-11-24 21:47:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:30,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:30,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:30,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:47:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:31,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:47:31,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:31,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:47:31,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:47:31,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:47:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:31,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:31,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680628471] [2023-11-24 21:47:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680628471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:31,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:31,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:31,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535493113] [2023-11-24 21:47:31,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:31,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:31,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:31,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:47:31,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:31,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:47:31,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:31,223 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-24 21:47:31,223 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:31,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-24 21:47:31,226 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-24 21:47:31,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-24 21:47:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-24 21:47:31,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-24 21:47:31,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-24 21:47:31,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-24 21:47:31,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:31,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-24 21:47:31,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,232 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-24 21:47:31,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-24 21:47:31,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:31,235 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-24 21:47:31,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-24 21:47:31,238 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-24 21:47:31,238 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-24 21:47:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:31,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:47:31,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:31,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:31,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:31,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash 202776936, now seen corresponding path program 1 times [2023-11-24 21:47:31,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:31,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602337899] [2023-11-24 21:47:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:31,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:31,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:47:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:31,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:31,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:31,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:47:31,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:47:31,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:47:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:31,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:31,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:31,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602337899] [2023-11-24 21:47:31,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602337899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:31,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:31,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:31,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212891261] [2023-11-24 21:47:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:31,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:31,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:31,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-24 21:47:31,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:31,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-24 21:47:31,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:31,748 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-24 21:47:31,748 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:31,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-24 21:47:31,751 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-24 21:47:31,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-24 21:47:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-24 21:47:31,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-24 21:47:31,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-24 21:47:31,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-24 21:47:31,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:31,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-24 21:47:31,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,756 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-24 21:47:31,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-24 21:47:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:31,758 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-24 21:47:31,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-24 21:47:31,759 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-24 21:47:31,759 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-24 21:47:31,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:31,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:31,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:31,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:31,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:31,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 665434620, now seen corresponding path program 1 times [2023-11-24 21:47:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:31,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402010700] [2023-11-24 21:47:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:31,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:31,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:31,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:31,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:47:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:32,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:32,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:32,308 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1))))) is different from true [2023-11-24 21:47:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:32,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:32,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402010700] [2023-11-24 21:47:32,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402010700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:32,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:32,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:32,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363455392] [2023-11-24 21:47:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:32,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:32,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:32,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:32,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:32,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:32,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:32,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:32,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:32,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:32,410 INFO L124 PetriNetUnfolderBase]: 97/205 cut-off events. [2023-11-24 21:47:32,411 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:47:32,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 205 events. 97/205 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 750 event pairs, 34 based on Foata normal form. 9/196 useless extension candidates. Maximal degree in co-relation 374. Up to 93 conditions per place. [2023-11-24 21:47:32,413 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 20 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2023-11-24 21:47:32,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 138 flow [2023-11-24 21:47:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:32,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:32,416 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:32,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:32,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:32,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:32,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:32,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:32,419 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:32,419 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:32,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 138 flow [2023-11-24 21:47:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:32,421 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 103 flow [2023-11-24 21:47:32,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-11-24 21:47:32,422 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-24 21:47:32,423 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 103 flow [2023-11-24 21:47:32,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:32,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:32,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:32,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:32,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:32,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:32,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash 665435715, now seen corresponding path program 1 times [2023-11-24 21:47:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049319556] [2023-11-24 21:47:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:32,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:32,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:32,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:47:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:32,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:47:32,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:32,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:32,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:32,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049319556] [2023-11-24 21:47:32,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049319556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:32,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:32,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:47:32,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619586085] [2023-11-24 21:47:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:32,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:47:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:47:32,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:47:32,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:32,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:32,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:32,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:32,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:33,201 INFO L124 PetriNetUnfolderBase]: 476/836 cut-off events. [2023-11-24 21:47:33,202 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-24 21:47:33,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 836 events. 476/836 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3864 event pairs, 49 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 2074. Up to 420 conditions per place. [2023-11-24 21:47:33,236 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 68 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2023-11-24 21:47:33,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 88 transitions, 463 flow [2023-11-24 21:47:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:47:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:47:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2023-11-24 21:47:33,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2023-11-24 21:47:33,239 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 174 transitions. [2023-11-24 21:47:33,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 174 transitions. [2023-11-24 21:47:33,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:33,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 174 transitions. [2023-11-24 21:47:33,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.75) internal successors, (174), 8 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) [2023-11-24 21:47:33,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:33,242 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:33,242 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 103 flow. Second operand 8 states and 174 transitions. [2023-11-24 21:47:33,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 88 transitions, 463 flow [2023-11-24 21:47:33,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 88 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:33,247 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 191 flow [2023-11-24 21:47:33,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-24 21:47:33,248 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-24 21:47:33,248 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 191 flow [2023-11-24 21:47:33,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:33,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:33,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:33,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:33,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:33,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:33,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash -846362831, now seen corresponding path program 1 times [2023-11-24 21:47:33,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:33,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720932151] [2023-11-24 21:47:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:33,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:33,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:33,455 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:33,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:47:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:33,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:33,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:33,757 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-24 21:47:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:33,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:33,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720932151] [2023-11-24 21:47:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720932151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:33,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:33,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913464049] [2023-11-24 21:47:33,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:33,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:33,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:33,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:33,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:33,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:33,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:33,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:33,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:33,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:33,943 INFO L124 PetriNetUnfolderBase]: 292/590 cut-off events. [2023-11-24 21:47:33,943 INFO L125 PetriNetUnfolderBase]: For 341/435 co-relation queries the response was YES. [2023-11-24 21:47:33,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 590 events. 292/590 cut-off events. For 341/435 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3105 event pairs, 81 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 1622. Up to 307 conditions per place. [2023-11-24 21:47:33,951 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 21 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-11-24 21:47:33,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 301 flow [2023-11-24 21:47:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:33,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:33,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:33,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:33,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:33,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:33,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:33,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:33,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:33,955 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 191 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:33,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 301 flow [2023-11-24 21:47:33,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:47:33,960 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 258 flow [2023-11-24 21:47:33,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-24 21:47:33,961 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-24 21:47:33,962 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 258 flow [2023-11-24 21:47:33,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:33,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:33,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:33,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-24 21:47:34,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:34,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -846362676, now seen corresponding path program 1 times [2023-11-24 21:47:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:34,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271389927] [2023-11-24 21:47:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:34,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:34,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:34,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:34,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:47:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:34,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:34,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:34,459 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1))))) is different from true [2023-11-24 21:47:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:34,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:34,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:34,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271389927] [2023-11-24 21:47:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271389927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:34,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64811024] [2023-11-24 21:47:34,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:34,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:34,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:34,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:34,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:34,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:34,658 INFO L124 PetriNetUnfolderBase]: 302/616 cut-off events. [2023-11-24 21:47:34,658 INFO L125 PetriNetUnfolderBase]: For 686/882 co-relation queries the response was YES. [2023-11-24 21:47:34,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 616 events. 302/616 cut-off events. For 686/882 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3280 event pairs, 81 based on Foata normal form. 12/577 useless extension candidates. Maximal degree in co-relation 2084. Up to 323 conditions per place. [2023-11-24 21:47:34,667 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 26 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2023-11-24 21:47:34,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 396 flow [2023-11-24 21:47:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:34,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:34,669 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:34,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:34,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:34,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:34,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:34,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:34,672 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:34,673 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 258 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:34,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 396 flow [2023-11-24 21:47:34,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:34,680 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 320 flow [2023-11-24 21:47:34,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-11-24 21:47:34,684 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-24 21:47:34,684 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 320 flow [2023-11-24 21:47:34,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:34,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:34,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:34,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:34,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:34,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:34,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1571463786, now seen corresponding path program 1 times [2023-11-24 21:47:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113028964] [2023-11-24 21:47:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:34,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:34,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:34,891 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:34,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:47:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:34,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:47:34,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:35,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:35,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113028964] [2023-11-24 21:47:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113028964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:35,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:35,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:47:35,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804008517] [2023-11-24 21:47:35,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:35,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:35,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:35,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-24 21:47:35,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:35,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-24 21:47:35,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:35,172 INFO L124 PetriNetUnfolderBase]: 331/649 cut-off events. [2023-11-24 21:47:35,173 INFO L125 PetriNetUnfolderBase]: For 1270/1667 co-relation queries the response was YES. [2023-11-24 21:47:35,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 649 events. 331/649 cut-off events. For 1270/1667 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3400 event pairs, 62 based on Foata normal form. 42/622 useless extension candidates. Maximal degree in co-relation 2601. Up to 358 conditions per place. [2023-11-24 21:47:35,183 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 37 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-11-24 21:47:35,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 517 flow [2023-11-24 21:47:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-24 21:47:35,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-24 21:47:35,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-24 21:47:35,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-24 21:47:35,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:35,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-24 21:47:35,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,187 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 320 flow. Second operand 3 states and 77 transitions. [2023-11-24 21:47:35,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 517 flow [2023-11-24 21:47:35,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:35,194 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 358 flow [2023-11-24 21:47:35,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-11-24 21:47:35,195 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-24 21:47:35,195 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 358 flow [2023-11-24 21:47:35,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:35,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:35,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:35,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:35,399 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:35,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash 92591260, now seen corresponding path program 1 times [2023-11-24 21:47:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345085997] [2023-11-24 21:47:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:35,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:35,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:35,405 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:35,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:47:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:35,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:47:35,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:35,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:35,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345085997] [2023-11-24 21:47:35,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345085997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:35,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:35,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:47:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012419657] [2023-11-24 21:47:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:35,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-24 21:47:35,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:35,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-24 21:47:35,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:35,680 INFO L124 PetriNetUnfolderBase]: 347/749 cut-off events. [2023-11-24 21:47:35,680 INFO L125 PetriNetUnfolderBase]: For 1923/2279 co-relation queries the response was YES. [2023-11-24 21:47:35,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 749 events. 347/749 cut-off events. For 1923/2279 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4468 event pairs, 73 based on Foata normal form. 50/749 useless extension candidates. Maximal degree in co-relation 3083. Up to 380 conditions per place. [2023-11-24 21:47:35,692 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-24 21:47:35,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 569 flow [2023-11-24 21:47:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-24 21:47:35,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-24 21:47:35,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-24 21:47:35,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-24 21:47:35,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:35,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-24 21:47:35,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,695 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 358 flow. Second operand 3 states and 75 transitions. [2023-11-24 21:47:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 569 flow [2023-11-24 21:47:35,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:47:35,703 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 398 flow [2023-11-24 21:47:35,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2023-11-24 21:47:35,704 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-11-24 21:47:35,704 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 398 flow [2023-11-24 21:47:35,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:35,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:35,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:35,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-24 21:47:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:35,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:35,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash -467443401, now seen corresponding path program 1 times [2023-11-24 21:47:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:35,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70252621] [2023-11-24 21:47:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:35,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:35,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:35,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:35,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:47:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:36,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:36,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:36,185 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-24 21:47:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:36,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:36,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70252621] [2023-11-24 21:47:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70252621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:36,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659935683] [2023-11-24 21:47:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:36,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:36,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:36,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:36,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:36,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:36,361 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 25#L696-5true, 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-24 21:47:36,361 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is not cut-off event [2023-11-24 21:47:36,362 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-24 21:47:36,362 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is not cut-off event [2023-11-24 21:47:36,362 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-24 21:47:36,369 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [9#t1EXITtrue, 33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-24 21:47:36,369 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is not cut-off event [2023-11-24 21:47:36,369 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-24 21:47:36,370 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-24 21:47:36,370 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-24 21:47:36,383 INFO L124 PetriNetUnfolderBase]: 360/741 cut-off events. [2023-11-24 21:47:36,383 INFO L125 PetriNetUnfolderBase]: For 2171/2616 co-relation queries the response was YES. [2023-11-24 21:47:36,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 741 events. 360/741 cut-off events. For 2171/2616 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4178 event pairs, 106 based on Foata normal form. 7/667 useless extension candidates. Maximal degree in co-relation 3270. Up to 377 conditions per place. [2023-11-24 21:47:36,396 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 28 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2023-11-24 21:47:36,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 589 flow [2023-11-24 21:47:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:36,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:36,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:36,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:36,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:36,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:36,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:36,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:36,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:36,401 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 398 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:36,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 589 flow [2023-11-24 21:47:36,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:47:36,408 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 470 flow [2023-11-24 21:47:36,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-11-24 21:47:36,409 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-11-24 21:47:36,410 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 470 flow [2023-11-24 21:47:36,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:36,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:36,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:36,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-24 21:47:36,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:36,613 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:36,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 626340986, now seen corresponding path program 1 times [2023-11-24 21:47:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819383932] [2023-11-24 21:47:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:36,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:36,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:36,615 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:36,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 21:47:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:36,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:47:36,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:36,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:36,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:36,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819383932] [2023-11-24 21:47:36,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819383932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:36,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:36,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:47:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077535139] [2023-11-24 21:47:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:36,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:47:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:47:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:36,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:36,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:36,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:36,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:36,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:37,167 INFO L124 PetriNetUnfolderBase]: 711/1258 cut-off events. [2023-11-24 21:47:37,167 INFO L125 PetriNetUnfolderBase]: For 5229/5319 co-relation queries the response was YES. [2023-11-24 21:47:37,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 1258 events. 711/1258 cut-off events. For 5229/5319 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6528 event pairs, 57 based on Foata normal form. 24/1260 useless extension candidates. Maximal degree in co-relation 5853. Up to 585 conditions per place. [2023-11-24 21:47:37,185 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 90 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2023-11-24 21:47:37,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 119 transitions, 1178 flow [2023-11-24 21:47:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:47:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:47:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2023-11-24 21:47:37,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-24 21:47:37,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 168 transitions. [2023-11-24 21:47:37,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 168 transitions. [2023-11-24 21:47:37,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:37,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 168 transitions. [2023-11-24 21:47:37,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:37,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:37,190 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:37,190 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 470 flow. Second operand 8 states and 168 transitions. [2023-11-24 21:47:37,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 119 transitions, 1178 flow [2023-11-24 21:47:37,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 119 transitions, 1149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:37,205 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 604 flow [2023-11-24 21:47:37,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2023-11-24 21:47:37,206 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-11-24 21:47:37,206 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 604 flow [2023-11-24 21:47:37,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:37,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:37,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:37,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:37,410 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:37,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash 43846129, now seen corresponding path program 1 times [2023-11-24 21:47:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:37,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946768200] [2023-11-24 21:47:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:37,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:37,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:37,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 21:47:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:37,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:47:37,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:37,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:37,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946768200] [2023-11-24 21:47:37,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946768200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:37,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:47:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172390094] [2023-11-24 21:47:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:37,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:47:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:47:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:37,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:37,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:37,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:37,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:37,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:38,143 INFO L124 PetriNetUnfolderBase]: 1066/1862 cut-off events. [2023-11-24 21:47:38,143 INFO L125 PetriNetUnfolderBase]: For 9510/9640 co-relation queries the response was YES. [2023-11-24 21:47:38,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1862 events. 1066/1862 cut-off events. For 9510/9640 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10374 event pairs, 165 based on Foata normal form. 40/1871 useless extension candidates. Maximal degree in co-relation 9505. Up to 895 conditions per place. [2023-11-24 21:47:38,171 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 148 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2023-11-24 21:47:38,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 188 transitions, 2046 flow [2023-11-24 21:47:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:47:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:47:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2023-11-24 21:47:38,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2023-11-24 21:47:38,173 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 216 transitions. [2023-11-24 21:47:38,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 216 transitions. [2023-11-24 21:47:38,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:38,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 216 transitions. [2023-11-24 21:47:38,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:38,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:38,176 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:38,176 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 604 flow. Second operand 10 states and 216 transitions. [2023-11-24 21:47:38,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 188 transitions, 2046 flow [2023-11-24 21:47:38,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 188 transitions, 2040 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-24 21:47:38,204 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 950 flow [2023-11-24 21:47:38,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=950, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2023-11-24 21:47:38,205 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-11-24 21:47:38,205 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 950 flow [2023-11-24 21:47:38,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:38,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:38,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:38,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:38,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:38,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:38,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash 958131919, now seen corresponding path program 2 times [2023-11-24 21:47:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:38,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121460529] [2023-11-24 21:47:38,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:47:38,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:38,411 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:38,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 21:47:38,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 21:47:38,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:38,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:47:38,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:38,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:38,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:38,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121460529] [2023-11-24 21:47:38,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121460529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:38,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:47:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563176077] [2023-11-24 21:47:38,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:38,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:47:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:47:38,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:38,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:47:38,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 950 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:38,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:38,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:47:38,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:39,362 INFO L124 PetriNetUnfolderBase]: 1367/2362 cut-off events. [2023-11-24 21:47:39,362 INFO L125 PetriNetUnfolderBase]: For 17556/17750 co-relation queries the response was YES. [2023-11-24 21:47:39,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13580 conditions, 2362 events. 1367/2362 cut-off events. For 17556/17750 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13592 event pairs, 182 based on Foata normal form. 54/2371 useless extension candidates. Maximal degree in co-relation 13540. Up to 1195 conditions per place. [2023-11-24 21:47:39,401 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 154 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2023-11-24 21:47:39,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 201 transitions, 2401 flow [2023-11-24 21:47:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:47:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:47:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2023-11-24 21:47:39,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-24 21:47:39,404 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 210 transitions. [2023-11-24 21:47:39,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 210 transitions. [2023-11-24 21:47:39,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:39,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 210 transitions. [2023-11-24 21:47:39,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:39,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:39,407 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:39,407 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 950 flow. Second operand 10 states and 210 transitions. [2023-11-24 21:47:39,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 201 transitions, 2401 flow [2023-11-24 21:47:39,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 201 transitions, 2273 flow, removed 64 selfloop flow, removed 0 redundant places. [2023-11-24 21:47:39,474 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1255 flow [2023-11-24 21:47:39,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1255, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2023-11-24 21:47:39,475 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-11-24 21:47:39,475 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1255 flow [2023-11-24 21:47:39,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:39,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:39,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:39,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-24 21:47:39,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:39,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:39,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:39,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1255130824, now seen corresponding path program 1 times [2023-11-24 21:47:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:39,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751452924] [2023-11-24 21:47:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:39,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:39,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:39,679 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:39,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-24 21:47:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:39,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:39,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:39,988 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ bv0 1))))) is different from true [2023-11-24 21:47:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:40,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:40,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:40,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751452924] [2023-11-24 21:47:40,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751452924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:40,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:40,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101482317] [2023-11-24 21:47:40,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:40,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:40,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:40,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1255 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:40,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:40,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:40,325 INFO L124 PetriNetUnfolderBase]: 747/1569 cut-off events. [2023-11-24 21:47:40,325 INFO L125 PetriNetUnfolderBase]: For 10012/10952 co-relation queries the response was YES. [2023-11-24 21:47:40,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8759 conditions, 1569 events. 747/1569 cut-off events. For 10012/10952 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10394 event pairs, 156 based on Foata normal form. 126/1569 useless extension candidates. Maximal degree in co-relation 8709. Up to 872 conditions per place. [2023-11-24 21:47:40,356 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 39 selfloop transitions, 13 changer transitions 0/131 dead transitions. [2023-11-24 21:47:40,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 1499 flow [2023-11-24 21:47:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:40,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:40,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:40,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:40,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:40,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:40,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:40,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:40,360 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:40,360 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1255 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:40,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 1499 flow [2023-11-24 21:47:40,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 1442 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-24 21:47:40,427 INFO L231 Difference]: Finished difference. Result has 99 places, 122 transitions, 1298 flow [2023-11-24 21:47:40,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1298, PETRI_PLACES=99, PETRI_TRANSITIONS=122} [2023-11-24 21:47:40,428 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2023-11-24 21:47:40,429 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 122 transitions, 1298 flow [2023-11-24 21:47:40,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:40,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:40,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:40,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:40,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:40,632 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:40,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1758355290, now seen corresponding path program 2 times [2023-11-24 21:47:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:40,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945899386] [2023-11-24 21:47:40,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:47:40,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:40,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:40,635 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:40,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-24 21:47:40,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 21:47:40,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:40,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:40,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:40,911 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48|) (_ bv0 1)))) is different from true [2023-11-24 21:47:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:40,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:40,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:40,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945899386] [2023-11-24 21:47:40,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945899386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:40,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:40,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:40,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088036324] [2023-11-24 21:47:40,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:40,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:40,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:40,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 122 transitions, 1298 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:40,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:40,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:40,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:41,346 INFO L124 PetriNetUnfolderBase]: 755/1598 cut-off events. [2023-11-24 21:47:41,346 INFO L125 PetriNetUnfolderBase]: For 11368/12437 co-relation queries the response was YES. [2023-11-24 21:47:41,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 1598 events. 755/1598 cut-off events. For 11368/12437 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10698 event pairs, 156 based on Foata normal form. 135/1610 useless extension candidates. Maximal degree in co-relation 9494. Up to 883 conditions per place. [2023-11-24 21:47:41,383 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 36 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2023-11-24 21:47:41,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 1572 flow [2023-11-24 21:47:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:41,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:41,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:41,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:41,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:41,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:41,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:41,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:41,387 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:41,388 INFO L175 Difference]: Start difference. First operand has 99 places, 122 transitions, 1298 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:41,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 1572 flow [2023-11-24 21:47:41,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:41,433 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1418 flow [2023-11-24 21:47:41,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1418, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2023-11-24 21:47:41,434 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-11-24 21:47:41,435 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1418 flow [2023-11-24 21:47:41,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:41,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:41,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:41,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:41,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:41,638 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:41,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1986924656, now seen corresponding path program 1 times [2023-11-24 21:47:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818410713] [2023-11-24 21:47:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:41,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:41,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:41,640 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:41,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-24 21:47:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:41,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:41,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:41,943 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41|)))) is different from true [2023-11-24 21:47:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:41,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:41,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:41,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818410713] [2023-11-24 21:47:41,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818410713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:41,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:41,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046761217] [2023-11-24 21:47:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:41,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:41,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:41,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1418 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:41,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:41,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:41,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:42,345 INFO L124 PetriNetUnfolderBase]: 779/1648 cut-off events. [2023-11-24 21:47:42,346 INFO L125 PetriNetUnfolderBase]: For 13128/14375 co-relation queries the response was YES. [2023-11-24 21:47:42,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10510 conditions, 1648 events. 779/1648 cut-off events. For 13128/14375 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11075 event pairs, 155 based on Foata normal form. 162/1682 useless extension candidates. Maximal degree in co-relation 10458. Up to 910 conditions per place. [2023-11-24 21:47:42,379 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 49 selfloop transitions, 13 changer transitions 0/141 dead transitions. [2023-11-24 21:47:42,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 141 transitions, 1714 flow [2023-11-24 21:47:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:42,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:42,381 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:42,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:42,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:42,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:42,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:42,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:42,383 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:42,383 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1418 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:42,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 141 transitions, 1714 flow [2023-11-24 21:47:42,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 1664 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:42,429 INFO L231 Difference]: Finished difference. Result has 103 places, 132 transitions, 1488 flow [2023-11-24 21:47:42,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1488, PETRI_PLACES=103, PETRI_TRANSITIONS=132} [2023-11-24 21:47:42,430 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-11-24 21:47:42,430 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 132 transitions, 1488 flow [2023-11-24 21:47:42,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:42,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:42,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:42,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-24 21:47:42,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:42,633 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:42,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:42,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1763126810, now seen corresponding path program 2 times [2023-11-24 21:47:42,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930860602] [2023-11-24 21:47:42,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:47:42,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:42,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:42,635 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:42,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-24 21:47:42,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 21:47:42,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:42,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:42,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:42,891 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42|)))) is different from true [2023-11-24 21:47:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:42,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:42,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:42,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930860602] [2023-11-24 21:47:42,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930860602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:42,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:42,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:42,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190760683] [2023-11-24 21:47:42,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:42,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:42,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:42,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:42,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:42,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 132 transitions, 1488 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:42,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:42,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:42,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:43,360 INFO L124 PetriNetUnfolderBase]: 787/1671 cut-off events. [2023-11-24 21:47:43,361 INFO L125 PetriNetUnfolderBase]: For 14230/15495 co-relation queries the response was YES. [2023-11-24 21:47:43,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10895 conditions, 1671 events. 787/1671 cut-off events. For 14230/15495 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11354 event pairs, 155 based on Foata normal form. 173/1717 useless extension candidates. Maximal degree in co-relation 10842. Up to 921 conditions per place. [2023-11-24 21:47:43,403 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 46 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2023-11-24 21:47:43,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 146 transitions, 1798 flow [2023-11-24 21:47:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:43,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:43,406 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:43,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:43,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:43,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:43,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:43,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:43,407 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:43,408 INFO L175 Difference]: Start difference. First operand has 103 places, 132 transitions, 1488 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:43,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 146 transitions, 1798 flow [2023-11-24 21:47:43,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 146 transitions, 1784 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:43,467 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1612 flow [2023-11-24 21:47:43,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1612, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2023-11-24 21:47:43,468 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2023-11-24 21:47:43,468 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1612 flow [2023-11-24 21:47:43,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:43,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:43,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:43,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:43,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:43,672 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:43,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1131076429, now seen corresponding path program 1 times [2023-11-24 21:47:43,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:43,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318685495] [2023-11-24 21:47:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:43,674 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:43,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-24 21:47:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:43,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:43,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:43,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:43,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:43,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318685495] [2023-11-24 21:47:43,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318685495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:43,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:47:43,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-24 21:47:43,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896320244] [2023-11-24 21:47:43,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:43,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:47:43,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:47:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:43,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:47:43,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 1612 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 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) [2023-11-24 21:47:43,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:43,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:47:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:44,725 INFO L124 PetriNetUnfolderBase]: 1950/4041 cut-off events. [2023-11-24 21:47:44,726 INFO L125 PetriNetUnfolderBase]: For 43138/45506 co-relation queries the response was YES. [2023-11-24 21:47:44,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25759 conditions, 4041 events. 1950/4041 cut-off events. For 43138/45506 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30962 event pairs, 229 based on Foata normal form. 618/4475 useless extension candidates. Maximal degree in co-relation 25706. Up to 1967 conditions per place. [2023-11-24 21:47:44,798 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 130 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2023-11-24 21:47:44,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 239 transitions, 3288 flow [2023-11-24 21:47:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:47:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:47:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2023-11-24 21:47:44,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2023-11-24 21:47:44,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 158 transitions. [2023-11-24 21:47:44,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 158 transitions. [2023-11-24 21:47:44,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:44,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 158 transitions. [2023-11-24 21:47:44,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:44,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:44,803 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:44,803 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1612 flow. Second operand 6 states and 158 transitions. [2023-11-24 21:47:44,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 239 transitions, 3288 flow [2023-11-24 21:47:44,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 239 transitions, 3218 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:44,947 INFO L231 Difference]: Finished difference. Result has 112 places, 148 transitions, 1864 flow [2023-11-24 21:47:44,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1864, PETRI_PLACES=112, PETRI_TRANSITIONS=148} [2023-11-24 21:47:44,947 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 76 predicate places. [2023-11-24 21:47:44,948 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 148 transitions, 1864 flow [2023-11-24 21:47:44,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 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) [2023-11-24 21:47:44,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:44,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:44,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:45,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:45,151 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:45,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1348439954, now seen corresponding path program 1 times [2023-11-24 21:47:45,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:45,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437045577] [2023-11-24 21:47:45,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:45,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:45,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:45,153 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:45,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-24 21:47:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:45,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:45,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:45,426 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43|) (_ bv0 1)))) is different from true [2023-11-24 21:47:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:45,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:45,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:45,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437045577] [2023-11-24 21:47:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437045577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:45,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:45,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:45,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540149418] [2023-11-24 21:47:45,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:45,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:45,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 148 transitions, 1864 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:45,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:45,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:45,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:45,979 INFO L124 PetriNetUnfolderBase]: 1423/3295 cut-off events. [2023-11-24 21:47:45,979 INFO L125 PetriNetUnfolderBase]: For 35973/38320 co-relation queries the response was YES. [2023-11-24 21:47:46,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22480 conditions, 3295 events. 1423/3295 cut-off events. For 35973/38320 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26758 event pairs, 374 based on Foata normal form. 269/3298 useless extension candidates. Maximal degree in co-relation 22424. Up to 1686 conditions per place. [2023-11-24 21:47:46,051 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 67 selfloop transitions, 16 changer transitions 0/163 dead transitions. [2023-11-24 21:47:46,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 2260 flow [2023-11-24 21:47:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:46,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:46,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:46,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:46,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:46,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:46,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:46,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:46,054 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:46,054 INFO L175 Difference]: Start difference. First operand has 112 places, 148 transitions, 1864 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:46,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 2260 flow [2023-11-24 21:47:46,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 163 transitions, 2204 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-24 21:47:46,211 INFO L231 Difference]: Finished difference. Result has 115 places, 150 transitions, 1909 flow [2023-11-24 21:47:46,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1909, PETRI_PLACES=115, PETRI_TRANSITIONS=150} [2023-11-24 21:47:46,212 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2023-11-24 21:47:46,212 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 150 transitions, 1909 flow [2023-11-24 21:47:46,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:46,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:46,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:46,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:46,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:46,418 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:46,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1183398614, now seen corresponding path program 2 times [2023-11-24 21:47:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:46,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730807809] [2023-11-24 21:47:46,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:47:46,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:46,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:46,420 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:46,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-24 21:47:46,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 21:47:46,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:46,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:47:46,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:46,700 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44|)))) is different from true [2023-11-24 21:47:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:46,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:46,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:46,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730807809] [2023-11-24 21:47:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730807809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:46,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:46,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419448471] [2023-11-24 21:47:46,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:46,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 21:47:46,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-24 21:47:46,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 150 transitions, 1909 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:46,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:46,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-24 21:47:46,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:47,403 INFO L124 PetriNetUnfolderBase]: 1407/3271 cut-off events. [2023-11-24 21:47:47,403 INFO L125 PetriNetUnfolderBase]: For 36678/39061 co-relation queries the response was YES. [2023-11-24 21:47:47,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22681 conditions, 3271 events. 1407/3271 cut-off events. For 36678/39061 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 26648 event pairs, 368 based on Foata normal form. 273/3284 useless extension candidates. Maximal degree in co-relation 22622. Up to 1662 conditions per place. [2023-11-24 21:47:47,468 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 61 selfloop transitions, 24 changer transitions 0/165 dead transitions. [2023-11-24 21:47:47,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 2303 flow [2023-11-24 21:47:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-24 21:47:47,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-24 21:47:47,470 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-24 21:47:47,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-24 21:47:47,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:47,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-24 21:47:47,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:47,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:47,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-24 21:47:47,473 INFO L175 Difference]: Start difference. First operand has 115 places, 150 transitions, 1909 flow. Second operand 4 states and 73 transitions. [2023-11-24 21:47:47,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 165 transitions, 2303 flow [2023-11-24 21:47:47,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 165 transitions, 2286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:47,651 INFO L231 Difference]: Finished difference. Result has 117 places, 152 transitions, 2007 flow [2023-11-24 21:47:47,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2007, PETRI_PLACES=117, PETRI_TRANSITIONS=152} [2023-11-24 21:47:47,652 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2023-11-24 21:47:47,653 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 152 transitions, 2007 flow [2023-11-24 21:47:47,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:47,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:47,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:47,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:47,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:47,856 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:47:47,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1591410048, now seen corresponding path program 1 times [2023-11-24 21:47:47,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:47,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51378737] [2023-11-24 21:47:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:47,858 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:47,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3b7fcc-1049-4881-bbf2-14e4c95c9ef4/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-24 21:47:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:47,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:47,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:47,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:48,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:48,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51378737] [2023-11-24 21:47:48,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51378737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:48,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:47:48,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-24 21:47:48,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832604084] [2023-11-24 21:47:48,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:48,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:47:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:47:48,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:48,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:47:48,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 152 transitions, 2007 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:48,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:48,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:47:48,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand