./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/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_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/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_04e44ac4-580a-4795-aa01-5f73c30dd473/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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:57:29,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:57:29,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:57:29,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:57:29,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:57:29,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:57:29,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:57:29,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:57:29,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:57:29,698 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:57:29,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:57:29,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:57:29,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:57:29,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:57:29,701 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:57:29,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:57:29,702 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:57:29,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:57:29,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:57:29,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:57:29,704 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:57:29,705 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:57:29,705 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:57:29,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:57:29,706 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:57:29,707 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:57:29,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:57:29,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:57:29,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:57:29,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:57:29,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:57:29,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:57:29,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:57:29,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:57:29,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:57:29,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:57:29,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:57:29,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:57:29,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:57:29,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:57:29,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:57:29,712 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_04e44ac4-580a-4795-aa01-5f73c30dd473/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2023-11-24 21:57:29,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:57:29,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:57:29,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:57:29,997 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:57:29,997 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:57:29,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2023-11-24 21:57:33,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:57:33,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:57:33,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2023-11-24 21:57:33,606 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/data/09d1c4a25/929b64e664954cfaaca0dd9fcbd0d191/FLAG6594f8fff [2023-11-24 21:57:33,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/data/09d1c4a25/929b64e664954cfaaca0dd9fcbd0d191 [2023-11-24 21:57:33,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:57:33,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:57:33,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:57:33,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:57:33,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:57:33,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:57:33" (1/1) ... [2023-11-24 21:57:33,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aecf761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:33, skipping insertion in model container [2023-11-24 21:57:33,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:57:33" (1/1) ... [2023-11-24 21:57:33,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:57:34,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:57:34,077 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:57:34,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:57:34,208 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:57:34,208 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:57:34,216 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:57:34,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34 WrapperNode [2023-11-24 21:57:34,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:57:34,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:57:34,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:57:34,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:57:34,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,294 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-24 21:57:34,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:57:34,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:57:34,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:57:34,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:57:34,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,330 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:57:34,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:57:34,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:57:34,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:57:34,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:57:34,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (1/1) ... [2023-11-24 21:57:34,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:57:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:57:34,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:57:34,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:57:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:57:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:57:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:57:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:57:34,471 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:57:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:57:34,472 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:57:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:57:34,472 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:57:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:57:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:57:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:57:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:57:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:57:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:57:34,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:57:34,475 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 21:57:34,640 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:57:34,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:57:34,847 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:57:34,964 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:57:34,965 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:57:34,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:57:34 BoogieIcfgContainer [2023-11-24 21:57:34,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:57:34,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:57:34,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:57:34,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:57:34,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:57:33" (1/3) ... [2023-11-24 21:57:34,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7ca371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:57:34, skipping insertion in model container [2023-11-24 21:57:34,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:57:34" (2/3) ... [2023-11-24 21:57:34,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7ca371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:57:34, skipping insertion in model container [2023-11-24 21:57:34,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:57:34" (3/3) ... [2023-11-24 21:57:34,976 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2023-11-24 21:57:35,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:57:35,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-24 21:57:35,002 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:57:35,095 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:57:35,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 54 transitions, 120 flow [2023-11-24 21:57:35,180 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-24 21:57:35,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:57:35,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-24 21:57:35,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 54 transitions, 120 flow [2023-11-24 21:57:35,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 50 transitions, 109 flow [2023-11-24 21:57:35,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:57:35,209 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;@75cc31db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:57:35,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-24 21:57:35,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:57:35,214 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:57:35,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:57:35,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:35,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:57:35,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:35,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash 7469, now seen corresponding path program 1 times [2023-11-24 21:57:35,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:35,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542380366] [2023-11-24 21:57:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:35,494 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 21:57:35,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:35,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542380366] [2023-11-24 21:57:35,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542380366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:35,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:35,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:57:35,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913940425] [2023-11-24 21:57:35,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:35,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:57:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:35,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:57:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:57:35,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 54 [2023-11-24 21:57:35,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 21:57:35,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:35,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 54 [2023-11-24 21:57:35,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:35,777 INFO L124 PetriNetUnfolderBase]: 75/250 cut-off events. [2023-11-24 21:57:35,777 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 21:57:35,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 250 events. 75/250 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1389 event pairs, 63 based on Foata normal form. 16/235 useless extension candidates. Maximal degree in co-relation 392. Up to 117 conditions per place. [2023-11-24 21:57:35,784 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 16 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-24 21:57:35,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 143 flow [2023-11-24 21:57:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:57:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:57:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-24 21:57:35,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2023-11-24 21:57:35,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-24 21:57:35,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-24 21:57:35,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:35,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-24 21:57:35,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 21:57:35,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:35,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:35,819 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 109 flow. Second operand 3 states and 123 transitions. [2023-11-24 21:57:35,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 143 flow [2023-11-24 21:57:35,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:57:35,827 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 102 flow [2023-11-24 21:57:35,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-24 21:57:35,834 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-24 21:57:35,834 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 102 flow [2023-11-24 21:57:35,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 21:57:35,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:35,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:57:35,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:57:35,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:35,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash 7470, now seen corresponding path program 1 times [2023-11-24 21:57:35,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:35,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776021744] [2023-11-24 21:57:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:36,042 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 21:57:36,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:36,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776021744] [2023-11-24 21:57:36,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776021744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:36,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:36,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:57:36,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011838239] [2023-11-24 21:57:36,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:36,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:57:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:36,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:57:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:57:36,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2023-11-24 21:57:36,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:36,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:36,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2023-11-24 21:57:36,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:36,145 INFO L124 PetriNetUnfolderBase]: 75/249 cut-off events. [2023-11-24 21:57:36,145 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:57:36,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 249 events. 75/249 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1395 event pairs, 63 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 400. Up to 116 conditions per place. [2023-11-24 21:57:36,149 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 15 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-24 21:57:36,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 140 flow [2023-11-24 21:57:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:57:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:57:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-24 21:57:36,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2023-11-24 21:57:36,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-24 21:57:36,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-24 21:57:36,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:36,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-24 21:57:36,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 21:57:36,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,157 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 102 flow. Second operand 3 states and 123 transitions. [2023-11-24 21:57:36,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 140 flow [2023-11-24 21:57:36,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:57:36,160 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-24 21:57:36,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-24 21:57:36,161 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-11-24 21:57:36,162 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-24 21:57:36,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:36,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:36,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:57:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:57:36,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:36,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 222728780, now seen corresponding path program 1 times [2023-11-24 21:57:36,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226323357] [2023-11-24 21:57:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:36,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:36,311 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 21:57:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:36,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226323357] [2023-11-24 21:57:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226323357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:36,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:36,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:57:36,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243979679] [2023-11-24 21:57:36,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:57:36,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:57:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:57:36,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2023-11-24 21:57:36,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:36,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:36,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2023-11-24 21:57:36,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:36,454 INFO L124 PetriNetUnfolderBase]: 75/245 cut-off events. [2023-11-24 21:57:36,454 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:57:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 245 events. 75/245 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1367 event pairs, 62 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 396. Up to 113 conditions per place. [2023-11-24 21:57:36,461 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 15 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-24 21:57:36,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 138 flow [2023-11-24 21:57:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:57:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:57:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-24 21:57:36,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2023-11-24 21:57:36,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-24 21:57:36,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-24 21:57:36,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:36,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-24 21:57:36,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 21:57:36,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,475 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 123 transitions. [2023-11-24 21:57:36,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 138 flow [2023-11-24 21:57:36,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:57:36,479 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 21:57:36,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-24 21:57:36,481 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2023-11-24 21:57:36,482 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 21:57:36,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:36,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:36,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:57:36,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:57:36,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:36,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 222728779, now seen corresponding path program 1 times [2023-11-24 21:57:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984768414] [2023-11-24 21:57:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:36,596 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 21:57:36,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:36,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984768414] [2023-11-24 21:57:36,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984768414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:36,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:36,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:57:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169285399] [2023-11-24 21:57:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:57:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:57:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:57:36,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 54 [2023-11-24 21:57:36,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 21:57:36,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:36,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 54 [2023-11-24 21:57:36,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:36,731 INFO L124 PetriNetUnfolderBase]: 76/246 cut-off events. [2023-11-24 21:57:36,731 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:57:36,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 246 events. 76/246 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1365 event pairs, 42 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 402. Up to 116 conditions per place. [2023-11-24 21:57:36,737 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 16 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-24 21:57:36,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 138 flow [2023-11-24 21:57:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:57:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:57:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-11-24 21:57:36,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7469135802469136 [2023-11-24 21:57:36,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-11-24 21:57:36,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-11-24 21:57:36,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:36,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-11-24 21:57:36,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 21:57:36,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,744 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 121 transitions. [2023-11-24 21:57:36,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 138 flow [2023-11-24 21:57:36,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:57:36,748 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-24 21:57:36,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-24 21:57:36,750 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-11-24 21:57:36,751 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-24 21:57:36,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 21:57:36,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:36,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:36,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:57:36,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:36,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash -411199070, now seen corresponding path program 1 times [2023-11-24 21:57:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325044272] [2023-11-24 21:57:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:36,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:36,869 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 21:57:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325044272] [2023-11-24 21:57:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325044272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:36,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:36,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:57:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730125169] [2023-11-24 21:57:36,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:36,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:57:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:36,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:57:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:57:36,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 54 [2023-11-24 21:57:36,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 21:57:36,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:36,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 54 [2023-11-24 21:57:36,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:36,978 INFO L124 PetriNetUnfolderBase]: 79/237 cut-off events. [2023-11-24 21:57:36,978 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:57:36,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 237 events. 79/237 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1240 event pairs, 64 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 398. Up to 112 conditions per place. [2023-11-24 21:57:36,981 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-24 21:57:36,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 136 flow [2023-11-24 21:57:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:57:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:57:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-11-24 21:57:36,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7469135802469136 [2023-11-24 21:57:36,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-11-24 21:57:36,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-11-24 21:57:36,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:36,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-11-24 21:57:36,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 21:57:36,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:36,987 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 121 transitions. [2023-11-24 21:57:36,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 136 flow [2023-11-24 21:57:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:57:36,990 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-24 21:57:36,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-24 21:57:36,993 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-24 21:57:36,994 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-24 21:57:36,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 21:57:36,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:36,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:36,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:57:36,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:36,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash -411199069, now seen corresponding path program 1 times [2023-11-24 21:57:37,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:37,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493874859] [2023-11-24 21:57:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:37,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:37,131 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 21:57:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493874859] [2023-11-24 21:57:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493874859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:37,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:57:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894567496] [2023-11-24 21:57:37,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:37,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:57:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:57:37,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:57:37,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2023-11-24 21:57:37,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 21:57:37,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:37,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2023-11-24 21:57:37,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:37,221 INFO L124 PetriNetUnfolderBase]: 75/237 cut-off events. [2023-11-24 21:57:37,221 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:57:37,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 237 events. 75/237 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1284 event pairs, 27 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 392. Up to 104 conditions per place. [2023-11-24 21:57:37,225 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 15 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-24 21:57:37,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 132 flow [2023-11-24 21:57:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:57:37,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:57:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-24 21:57:37,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2023-11-24 21:57:37,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-24 21:57:37,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-24 21:57:37,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:37,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-24 21:57:37,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 21:57:37,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:37,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 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 21:57:37,230 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 123 transitions. [2023-11-24 21:57:37,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 132 flow [2023-11-24 21:57:37,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:57:37,235 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-24 21:57:37,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-24 21:57:37,238 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-24 21:57:37,239 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-24 21:57:37,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 21:57:37,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:37,239 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 21:57:37,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:57:37,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:37,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -825591652, now seen corresponding path program 1 times [2023-11-24 21:57:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:37,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588888291] [2023-11-24 21:57:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:37,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:37,924 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 21:57:37,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:37,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588888291] [2023-11-24 21:57:37,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588888291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:37,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:37,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107544948] [2023-11-24 21:57:37,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:37,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:37,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:37,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:57:38,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 54 [2023-11-24 21:57:38,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 21:57:38,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:38,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 54 [2023-11-24 21:57:38,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:38,235 INFO L124 PetriNetUnfolderBase]: 76/230 cut-off events. [2023-11-24 21:57:38,235 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:57:38,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 230 events. 76/230 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1227 event pairs, 16 based on Foata normal form. 8/224 useless extension candidates. Maximal degree in co-relation 388. Up to 104 conditions per place. [2023-11-24 21:57:38,237 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 14 selfloop transitions, 3 changer transitions 4/46 dead transitions. [2023-11-24 21:57:38,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 144 flow [2023-11-24 21:57:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:57:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:57:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2023-11-24 21:57:38,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2023-11-24 21:57:38,240 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 214 transitions. [2023-11-24 21:57:38,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 214 transitions. [2023-11-24 21:57:38,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:38,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 214 transitions. [2023-11-24 21:57:38,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:38,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 21:57:38,248 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 21:57:38,248 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 6 states and 214 transitions. [2023-11-24 21:57:38,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 144 flow [2023-11-24 21:57:38,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:57:38,251 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 90 flow [2023-11-24 21:57:38,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-24 21:57:38,254 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-11-24 21:57:38,255 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 90 flow [2023-11-24 21:57:38,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 21:57:38,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:38,255 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 21:57:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:57:38,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:38,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash -825590362, now seen corresponding path program 1 times [2023-11-24 21:57:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:38,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923490584] [2023-11-24 21:57:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:38,463 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 21:57:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923490584] [2023-11-24 21:57:38,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923490584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:38,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:57:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29430524] [2023-11-24 21:57:38,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:38,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:38,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:38,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 54 [2023-11-24 21:57:38,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:57:38,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:38,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 54 [2023-11-24 21:57:38,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:38,927 INFO L124 PetriNetUnfolderBase]: 1056/2050 cut-off events. [2023-11-24 21:57:38,927 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-24 21:57:38,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 2050 events. 1056/2050 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14571 event pairs, 248 based on Foata normal form. 0/1978 useless extension candidates. Maximal degree in co-relation 3750. Up to 684 conditions per place. [2023-11-24 21:57:38,943 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 28 selfloop transitions, 5 changer transitions 48/101 dead transitions. [2023-11-24 21:57:38,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 101 transitions, 384 flow [2023-11-24 21:57:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:57:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:57:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 353 transitions. [2023-11-24 21:57:38,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263374485596708 [2023-11-24 21:57:38,946 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 353 transitions. [2023-11-24 21:57:38,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 353 transitions. [2023-11-24 21:57:38,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:38,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 353 transitions. [2023-11-24 21:57:38,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.22222222222222) internal successors, (353), 9 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 21:57:38,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 54.0) internal successors, (540), 10 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:57:38,950 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 54.0) internal successors, (540), 10 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:57:38,950 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 90 flow. Second operand 9 states and 353 transitions. [2023-11-24 21:57:38,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 101 transitions, 384 flow [2023-11-24 21:57:38,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 376 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:57:38,955 INFO L231 Difference]: Finished difference. Result has 63 places, 42 transitions, 153 flow [2023-11-24 21:57:38,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=153, PETRI_PLACES=63, PETRI_TRANSITIONS=42} [2023-11-24 21:57:38,957 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-11-24 21:57:38,958 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 42 transitions, 153 flow [2023-11-24 21:57:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:57:38,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:38,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:38,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:57:38,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:38,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1720014311, now seen corresponding path program 1 times [2023-11-24 21:57:38,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:38,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236212838] [2023-11-24 21:57:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:38,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:39,162 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 21:57:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:39,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236212838] [2023-11-24 21:57:39,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236212838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:39,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:39,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:57:39,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040599490] [2023-11-24 21:57:39,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:39,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:57:39,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:57:39,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:57:39,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 54 [2023-11-24 21:57:39,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 42 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 21:57:39,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:39,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 54 [2023-11-24 21:57:39,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:39,519 INFO L124 PetriNetUnfolderBase]: 1084/2167 cut-off events. [2023-11-24 21:57:39,519 INFO L125 PetriNetUnfolderBase]: For 1157/1176 co-relation queries the response was YES. [2023-11-24 21:57:39,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 2167 events. 1084/2167 cut-off events. For 1157/1176 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15417 event pairs, 251 based on Foata normal form. 91/2121 useless extension candidates. Maximal degree in co-relation 4838. Up to 1002 conditions per place. [2023-11-24 21:57:39,544 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 27 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-11-24 21:57:39,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 252 flow [2023-11-24 21:57:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:57:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:57:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2023-11-24 21:57:39,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:57:39,546 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 162 transitions. [2023-11-24 21:57:39,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 162 transitions. [2023-11-24 21:57:39,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:39,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 162 transitions. [2023-11-24 21:57:39,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 21:57:39,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 21:57:39,549 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 21:57:39,549 INFO L175 Difference]: Start difference. First operand has 63 places, 42 transitions, 153 flow. Second operand 4 states and 162 transitions. [2023-11-24 21:57:39,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 252 flow [2023-11-24 21:57:39,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 230 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-24 21:57:39,562 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 169 flow [2023-11-24 21:57:39,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-24 21:57:39,563 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2023-11-24 21:57:39,564 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 169 flow [2023-11-24 21:57:39,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 21:57:39,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:39,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:39,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:57:39,565 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:39,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:39,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1702103579, now seen corresponding path program 1 times [2023-11-24 21:57:39,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:39,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331586520] [2023-11-24 21:57:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:39,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:39,718 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 21:57:39,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:39,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331586520] [2023-11-24 21:57:39,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331586520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:39,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:39,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:57:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859251422] [2023-11-24 21:57:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:39,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:39,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:39,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 54 [2023-11-24 21:57:39,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:39,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:39,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 54 [2023-11-24 21:57:39,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:40,038 INFO L124 PetriNetUnfolderBase]: 788/1593 cut-off events. [2023-11-24 21:57:40,038 INFO L125 PetriNetUnfolderBase]: For 758/1357 co-relation queries the response was YES. [2023-11-24 21:57:40,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 1593 events. 788/1593 cut-off events. For 758/1357 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10212 event pairs, 76 based on Foata normal form. 100/1600 useless extension candidates. Maximal degree in co-relation 3958. Up to 592 conditions per place. [2023-11-24 21:57:40,055 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 34 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2023-11-24 21:57:40,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 318 flow [2023-11-24 21:57:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:57:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:57:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2023-11-24 21:57:40,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2023-11-24 21:57:40,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 204 transitions. [2023-11-24 21:57:40,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 204 transitions. [2023-11-24 21:57:40,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:40,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 204 transitions. [2023-11-24 21:57:40,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 21:57:40,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:57:40,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:57:40,061 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 169 flow. Second operand 5 states and 204 transitions. [2023-11-24 21:57:40,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 318 flow [2023-11-24 21:57:40,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 311 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-24 21:57:40,067 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 217 flow [2023-11-24 21:57:40,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-24 21:57:40,069 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-24 21:57:40,069 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 217 flow [2023-11-24 21:57:40,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:40,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:40,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:40,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:57:40,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:40,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1518589167, now seen corresponding path program 1 times [2023-11-24 21:57:40,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:40,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747725908] [2023-11-24 21:57:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:40,262 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 21:57:40,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:40,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747725908] [2023-11-24 21:57:40,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747725908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:40,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:40,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:40,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643472833] [2023-11-24 21:57:40,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:40,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:57:40,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:57:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:57:40,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 54 [2023-11-24 21:57:40,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 21:57:40,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:40,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 54 [2023-11-24 21:57:40,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:40,569 INFO L124 PetriNetUnfolderBase]: 572/1121 cut-off events. [2023-11-24 21:57:40,569 INFO L125 PetriNetUnfolderBase]: For 1869/3163 co-relation queries the response was YES. [2023-11-24 21:57:40,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 1121 events. 572/1121 cut-off events. For 1869/3163 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6445 event pairs, 36 based on Foata normal form. 92/1132 useless extension candidates. Maximal degree in co-relation 3437. Up to 464 conditions per place. [2023-11-24 21:57:40,581 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 31 selfloop transitions, 11 changer transitions 2/69 dead transitions. [2023-11-24 21:57:40,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 356 flow [2023-11-24 21:57:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:57:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:57:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2023-11-24 21:57:40,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7345679012345679 [2023-11-24 21:57:40,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 238 transitions. [2023-11-24 21:57:40,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 238 transitions. [2023-11-24 21:57:40,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:40,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 238 transitions. [2023-11-24 21:57:40,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 21:57:40,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 21:57:40,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 21:57:40,590 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 217 flow. Second operand 6 states and 238 transitions. [2023-11-24 21:57:40,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 356 flow [2023-11-24 21:57:40,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 335 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-24 21:57:40,596 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 241 flow [2023-11-24 21:57:40,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2023-11-24 21:57:40,597 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2023-11-24 21:57:40,597 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 241 flow [2023-11-24 21:57:40,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 21:57:40,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:40,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:40,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:57:40,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:40,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash -352006858, now seen corresponding path program 1 times [2023-11-24 21:57:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:40,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560739218] [2023-11-24 21:57:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:40,931 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 21:57:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560739218] [2023-11-24 21:57:40,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560739218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:40,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:40,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:57:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996186648] [2023-11-24 21:57:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:40,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:40,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:57:40,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2023-11-24 21:57:40,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 241 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 21:57:40,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:40,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2023-11-24 21:57:40,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:41,379 INFO L124 PetriNetUnfolderBase]: 906/1991 cut-off events. [2023-11-24 21:57:41,380 INFO L125 PetriNetUnfolderBase]: For 3375/3642 co-relation queries the response was YES. [2023-11-24 21:57:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5796 conditions, 1991 events. 906/1991 cut-off events. For 3375/3642 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14523 event pairs, 167 based on Foata normal form. 27/1827 useless extension candidates. Maximal degree in co-relation 5774. Up to 512 conditions per place. [2023-11-24 21:57:41,396 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 27 selfloop transitions, 7 changer transitions 26/88 dead transitions. [2023-11-24 21:57:41,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 498 flow [2023-11-24 21:57:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:57:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:57:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2023-11-24 21:57:41,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2023-11-24 21:57:41,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 291 transitions. [2023-11-24 21:57:41,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 291 transitions. [2023-11-24 21:57:41,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:41,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 291 transitions. [2023-11-24 21:57:41,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 21:57:41,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 21:57:41,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 21:57:41,403 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 241 flow. Second operand 8 states and 291 transitions. [2023-11-24 21:57:41,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 498 flow [2023-11-24 21:57:41,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 88 transitions, 454 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-24 21:57:41,456 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 235 flow [2023-11-24 21:57:41,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=235, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-11-24 21:57:41,458 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-11-24 21:57:41,458 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 235 flow [2023-11-24 21:57:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 21:57:41,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:41,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:41,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:57:41,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:41,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1005723720, now seen corresponding path program 2 times [2023-11-24 21:57:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:41,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872692705] [2023-11-24 21:57:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:41,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:41,680 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 21:57:41,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:41,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872692705] [2023-11-24 21:57:41,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872692705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:41,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:41,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:57:41,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949539922] [2023-11-24 21:57:41,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:41,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:57:41,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:41,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:57:41,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:57:41,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 54 [2023-11-24 21:57:41,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:41,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:41,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 54 [2023-11-24 21:57:41,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:41,948 INFO L124 PetriNetUnfolderBase]: 563/1308 cut-off events. [2023-11-24 21:57:41,948 INFO L125 PetriNetUnfolderBase]: For 1440/1567 co-relation queries the response was YES. [2023-11-24 21:57:41,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 1308 events. 563/1308 cut-off events. For 1440/1567 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8958 event pairs, 172 based on Foata normal form. 21/1173 useless extension candidates. Maximal degree in co-relation 3526. Up to 402 conditions per place. [2023-11-24 21:57:41,958 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 20 selfloop transitions, 4 changer transitions 17/69 dead transitions. [2023-11-24 21:57:41,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 374 flow [2023-11-24 21:57:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:57:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:57:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2023-11-24 21:57:41,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6820987654320988 [2023-11-24 21:57:41,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 221 transitions. [2023-11-24 21:57:41,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 221 transitions. [2023-11-24 21:57:41,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:41,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 221 transitions. [2023-11-24 21:57:41,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 21:57:41,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 21:57:41,964 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 21:57:41,964 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 235 flow. Second operand 6 states and 221 transitions. [2023-11-24 21:57:41,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 374 flow [2023-11-24 21:57:41,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 354 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-24 21:57:41,976 INFO L231 Difference]: Finished difference. Result has 71 places, 46 transitions, 211 flow [2023-11-24 21:57:41,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=71, PETRI_TRANSITIONS=46} [2023-11-24 21:57:41,977 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-11-24 21:57:41,978 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 46 transitions, 211 flow [2023-11-24 21:57:41,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:41,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:57:41,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:57:41,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:57:41,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash 289595898, now seen corresponding path program 3 times [2023-11-24 21:57:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:57:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002214118] [2023-11-24 21:57:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:57:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:42,194 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 21:57:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:57:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002214118] [2023-11-24 21:57:42,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002214118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:42,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:42,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:57:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818184398] [2023-11-24 21:57:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:57:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:57:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:57:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:57:42,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2023-11-24 21:57:42,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 46 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 21:57:42,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:57:42,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2023-11-24 21:57:42,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:57:42,374 INFO L124 PetriNetUnfolderBase]: 147/351 cut-off events. [2023-11-24 21:57:42,375 INFO L125 PetriNetUnfolderBase]: For 369/400 co-relation queries the response was YES. [2023-11-24 21:57:42,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 351 events. 147/351 cut-off events. For 369/400 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1481 event pairs, 9 based on Foata normal form. 11/337 useless extension candidates. Maximal degree in co-relation 950. Up to 140 conditions per place. [2023-11-24 21:57:42,377 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2023-11-24 21:57:42,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 57 transitions, 301 flow [2023-11-24 21:57:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:57:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:57:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2023-11-24 21:57:42,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6243386243386243 [2023-11-24 21:57:42,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 236 transitions. [2023-11-24 21:57:42,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 236 transitions. [2023-11-24 21:57:42,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:57:42,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 236 transitions. [2023-11-24 21:57:42,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 21:57:42,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:42,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:57:42,384 INFO L175 Difference]: Start difference. First operand has 71 places, 46 transitions, 211 flow. Second operand 7 states and 236 transitions. [2023-11-24 21:57:42,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 57 transitions, 301 flow [2023-11-24 21:57:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 260 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-11-24 21:57:42,388 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2023-11-24 21:57:42,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2023-11-24 21:57:42,389 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-11-24 21:57:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2023-11-24 21:57:42,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 21:57:42,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-24 21:57:42,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-24 21:57:42,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-24 21:57:42,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-24 21:57:42,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-24 21:57:42,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-24 21:57:42,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-24 21:57:42,395 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-24 21:57:42,395 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-24 21:57:42,395 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-24 21:57:42,395 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-24 21:57:42,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:57:42,396 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:42,402 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:57:42,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:57:42,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:57:42 BasicIcfg [2023-11-24 21:57:42,412 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:57:42,412 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:57:42,413 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:57:42,413 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:57:42,413 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:57:34" (3/4) ... [2023-11-24 21:57:42,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:57:42,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:57:42,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:57:42,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 21:57:42,429 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-24 21:57:42,429 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-24 21:57:42,429 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:57:42,429 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:57:42,520 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:57:42,520 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:57:42,520 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:57:42,521 INFO L158 Benchmark]: Toolchain (without parser) took 8887.39ms. Allocated memory was 130.0MB in the beginning and 247.5MB in the end (delta: 117.4MB). Free memory was 88.5MB in the beginning and 175.6MB in the end (delta: -87.1MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-24 21:57:42,522 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:57:42,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.65ms. Allocated memory is still 130.0MB. Free memory was 88.2MB in the beginning and 67.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:57:42,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.84ms. Allocated memory is still 130.0MB. Free memory was 67.7MB in the beginning and 65.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:57:42,523 INFO L158 Benchmark]: Boogie Preprocessor took 52.61ms. Allocated memory is still 130.0MB. Free memory was 65.7MB in the beginning and 63.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:57:42,523 INFO L158 Benchmark]: RCFGBuilder took 616.88ms. Allocated memory was 130.0MB in the beginning and 169.9MB in the end (delta: 39.8MB). Free memory was 63.1MB in the beginning and 121.6MB in the end (delta: -58.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-11-24 21:57:42,524 INFO L158 Benchmark]: TraceAbstraction took 7443.42ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 120.9MB in the beginning and 179.8MB in the end (delta: -58.9MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-11-24 21:57:42,524 INFO L158 Benchmark]: Witness Printer took 108.24ms. Allocated memory is still 247.5MB. Free memory was 179.8MB in the beginning and 175.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:57:42,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.65ms. Allocated memory is still 130.0MB. Free memory was 88.2MB in the beginning and 67.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.84ms. Allocated memory is still 130.0MB. Free memory was 67.7MB in the beginning and 65.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.61ms. Allocated memory is still 130.0MB. Free memory was 65.7MB in the beginning and 63.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 616.88ms. Allocated memory was 130.0MB in the beginning and 169.9MB in the end (delta: 39.8MB). Free memory was 63.1MB in the beginning and 121.6MB in the end (delta: -58.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7443.42ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 120.9MB in the beginning and 179.8MB in the end (delta: -58.9MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Witness Printer took 108.24ms. Allocated memory is still 247.5MB. Free memory was 179.8MB in the beginning and 175.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 780]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 79 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.3s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 506 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 391 mSDsluCounter, 194 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1052 IncrementalHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 60 mSDtfsCounter, 1052 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=11, InterpolantAutomatonStates: 69, 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, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 1353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:57:42,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e44ac4-580a-4795-aa01-5f73c30dd473/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE