./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c --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_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya --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 e60e484eb5ab810972130a1d83dccbab591b96ac9007b9b56059ed6674807329 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:21:06,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:21:06,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-28 20:21:06,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:21:06,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:21:06,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:21:06,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:21:06,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:21:06,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:21:06,398 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:21:06,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:21:06,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:21:06,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:21:06,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:21:06,401 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:21:06,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:21:06,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:21:06,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:21:06,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:21:06,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:21:06,404 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-28 20:21:06,405 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-28 20:21:06,405 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-28 20:21:06,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:21:06,416 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-28 20:21:06,416 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:21:06,417 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:21:06,417 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:21:06,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:21:06,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:21:06,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:21:06,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:21:06,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:21:06,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:21:06,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:21:06,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:21:06,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:21:06,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:21:06,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:21:06,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:21:06,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:21:06,421 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_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e60e484eb5ab810972130a1d83dccbab591b96ac9007b9b56059ed6674807329 [2023-11-28 20:21:06,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:21:06,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:21:06,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:21:06,655 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:21:06,656 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:21:06,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2023-11-28 20:21:09,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:21:09,523 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:21:09,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2023-11-28 20:21:09,531 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/data/9740d80ef/e9082bfd5bf040ee92d0a8ee4f8e49c1/FLAG8deadbbec [2023-11-28 20:21:09,543 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/data/9740d80ef/e9082bfd5bf040ee92d0a8ee4f8e49c1 [2023-11-28 20:21:09,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:21:09,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:21:09,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:21:09,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:21:09,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:21:09,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32decaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09, skipping insertion in model container [2023-11-28 20:21:09,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:21:09,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:21:09,781 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:21:09,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:21:09,816 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:21:09,816 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:21:09,822 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:21:09,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09 WrapperNode [2023-11-28 20:21:09,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:21:09,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:21:09,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:21:09,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:21:09,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,873 INFO L138 Inliner]: procedures = 23, calls = 47, calls flagged for inlining = 19, calls inlined = 41, statements flattened = 369 [2023-11-28 20:21:09,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:21:09,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:21:09,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:21:09,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:21:09,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,912 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 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]. [2023-11-28 20:21:09,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:21:09,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:21:09,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:21:09,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:21:09,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (1/1) ... [2023-11-28 20:21:09,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:21:09,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:09,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:21:09,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:21:10,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:21:10,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 20:21:10,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 20:21:10,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 20:21:10,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 20:21:10,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 20:21:10,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 20:21:10,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:21:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:21:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:21:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:21:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:21:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:21:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:21:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:21:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:21:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 20:21:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 20:21:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:21:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:21:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:21:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:21:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:21:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:21:10,016 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:21:10,136 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:21:10,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:21:10,657 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:21:11,218 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:21:11,219 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 20:21:11,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:11 BoogieIcfgContainer [2023-11-28 20:21:11,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:21:11,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:21:11,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:21:11,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:21:11,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:21:09" (1/3) ... [2023-11-28 20:21:11,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dff7fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:21:11, skipping insertion in model container [2023-11-28 20:21:11,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:09" (2/3) ... [2023-11-28 20:21:11,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dff7fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:21:11, skipping insertion in model container [2023-11-28 20:21:11,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:11" (3/3) ... [2023-11-28 20:21:11,229 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2023-11-28 20:21:11,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:21:11,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-28 20:21:11,250 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:21:11,354 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-28 20:21:11,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 47 transitions, 115 flow [2023-11-28 20:21:11,422 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-28 20:21:11,422 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-28 20:21:11,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 0/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-28 20:21:11,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 47 transitions, 115 flow [2023-11-28 20:21:11,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 43 transitions, 104 flow [2023-11-28 20:21:11,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:21:11,445 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;@36430a30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:21:11,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-28 20:21:11,448 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:21:11,448 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-28 20:21:11,449 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:21:11,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:11,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-28 20:21:11,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:11,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash 40159, now seen corresponding path program 1 times [2023-11-28 20:21:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:11,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088514904] [2023-11-28 20:21:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:11,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:11,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088514904] [2023-11-28 20:21:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088514904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:11,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:11,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132378073] [2023-11-28 20:21:11,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:11,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:11,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:11,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:11,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-28 20:21:11,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:11,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:11,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-28 20:21:11,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:12,092 INFO L124 PetriNetUnfolderBase]: 178/400 cut-off events. [2023-11-28 20:21:12,092 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-28 20:21:12,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 400 events. 178/400 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1835 event pairs, 178 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 611. Up to 299 conditions per place. [2023-11-28 20:21:12,101 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-28 20:21:12,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 134 flow [2023-11-28 20:21:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-28 20:21:12,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-28 20:21:12,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-28 20:21:12,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-28 20:21:12,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:12,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-28 20:21:12,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,126 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 104 flow. Second operand 3 states and 94 transitions. [2023-11-28 20:21:12,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 134 flow [2023-11-28 20:21:12,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-28 20:21:12,133 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 86 flow [2023-11-28 20:21:12,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-11-28 20:21:12,138 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-28 20:21:12,138 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 86 flow [2023-11-28 20:21:12,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:12,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-28 20:21:12,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:21:12,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:12,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:12,140 INFO L85 PathProgramCache]: Analyzing trace with hash 40160, now seen corresponding path program 1 times [2023-11-28 20:21:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:12,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959259276] [2023-11-28 20:21:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:12,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:12,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959259276] [2023-11-28 20:21:12,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959259276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:12,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:12,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:12,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539812562] [2023-11-28 20:21:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:12,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:12,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 47 [2023-11-28 20:21:12,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:12,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 47 [2023-11-28 20:21:12,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:12,433 INFO L124 PetriNetUnfolderBase]: 124/302 cut-off events. [2023-11-28 20:21:12,433 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-28 20:21:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 302 events. 124/302 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1332 event pairs, 124 based on Foata normal form. 28/285 useless extension candidates. Maximal degree in co-relation 530. Up to 217 conditions per place. [2023-11-28 20:21:12,437 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 16 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-28 20:21:12,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 116 flow [2023-11-28 20:21:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:12,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-28 20:21:12,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2023-11-28 20:21:12,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-28 20:21:12,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-28 20:21:12,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:12,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-28 20:21:12,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,442 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 86 flow. Second operand 3 states and 97 transitions. [2023-11-28 20:21:12,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 116 flow [2023-11-28 20:21:12,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:12,445 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 83 flow [2023-11-28 20:21:12,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-28 20:21:12,446 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-28 20:21:12,446 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 83 flow [2023-11-28 20:21:12,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:12,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:21:12,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:21:12,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:12,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1197578192, now seen corresponding path program 1 times [2023-11-28 20:21:12,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:12,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788233066] [2023-11-28 20:21:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:12,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788233066] [2023-11-28 20:21:12,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788233066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:12,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:12,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:12,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104447102] [2023-11-28 20:21:12,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:12,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:12,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:12,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-28 20:21:12,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:12,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-28 20:21:12,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:12,648 INFO L124 PetriNetUnfolderBase]: 138/317 cut-off events. [2023-11-28 20:21:12,648 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-28 20:21:12,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 317 events. 138/317 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1342 event pairs, 138 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 571. Up to 243 conditions per place. [2023-11-28 20:21:12,651 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-28 20:21:12,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 117 flow [2023-11-28 20:21:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-28 20:21:12,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-28 20:21:12,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-28 20:21:12,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-28 20:21:12,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:12,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-28 20:21:12,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,666 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 83 flow. Second operand 3 states and 93 transitions. [2023-11-28 20:21:12,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 117 flow [2023-11-28 20:21:12,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:12,668 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 80 flow [2023-11-28 20:21:12,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-11-28 20:21:12,669 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-28 20:21:12,669 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 80 flow [2023-11-28 20:21:12,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:12,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:21:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:21:12,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:12,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1197578193, now seen corresponding path program 1 times [2023-11-28 20:21:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353749474] [2023-11-28 20:21:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:12,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353749474] [2023-11-28 20:21:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353749474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:12,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:12,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:12,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155457753] [2023-11-28 20:21:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:12,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:12,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:12,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:12,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-28 20:21:12,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:12,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-28 20:21:12,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:12,918 INFO L124 PetriNetUnfolderBase]: 138/309 cut-off events. [2023-11-28 20:21:12,918 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-28 20:21:12,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 309 events. 138/309 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1294 event pairs, 138 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 563. Up to 243 conditions per place. [2023-11-28 20:21:12,921 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-28 20:21:12,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 114 flow [2023-11-28 20:21:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-28 20:21:12,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-28 20:21:12,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-28 20:21:12,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-28 20:21:12,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:12,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-28 20:21:12,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,925 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 80 flow. Second operand 3 states and 93 transitions. [2023-11-28 20:21:12,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 114 flow [2023-11-28 20:21:12,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:12,927 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 77 flow [2023-11-28 20:21:12,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-28 20:21:12,928 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-28 20:21:12,928 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 77 flow [2023-11-28 20:21:12,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:12,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:12,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:12,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:21:12,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:12,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1240204644, now seen corresponding path program 1 times [2023-11-28 20:21:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:12,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843956821] [2023-11-28 20:21:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:12,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:13,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843956821] [2023-11-28 20:21:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843956821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:13,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197806799] [2023-11-28 20:21:13,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:13,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:13,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:13,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 47 [2023-11-28 20:21:13,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:13,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 47 [2023-11-28 20:21:13,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:13,198 INFO L124 PetriNetUnfolderBase]: 124/278 cut-off events. [2023-11-28 20:21:13,198 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-28 20:21:13,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 278 events. 124/278 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1161 event pairs, 124 based on Foata normal form. 11/268 useless extension candidates. Maximal degree in co-relation 506. Up to 217 conditions per place. [2023-11-28 20:21:13,201 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 16 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-28 20:21:13,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 107 flow [2023-11-28 20:21:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-28 20:21:13,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2023-11-28 20:21:13,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-28 20:21:13,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-28 20:21:13,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:13,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-28 20:21:13,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,204 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 77 flow. Second operand 3 states and 97 transitions. [2023-11-28 20:21:13,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 107 flow [2023-11-28 20:21:13,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:13,206 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 74 flow [2023-11-28 20:21:13,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-28 20:21:13,207 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2023-11-28 20:21:13,207 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 74 flow [2023-11-28 20:21:13,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:13,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:13,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:21:13,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:13,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1240204645, now seen corresponding path program 1 times [2023-11-28 20:21:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143903940] [2023-11-28 20:21:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:13,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:13,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143903940] [2023-11-28 20:21:13,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143903940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:13,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:13,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:13,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985983818] [2023-11-28 20:21:13,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:13,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:13,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:13,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:13,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-28 20:21:13,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:13,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-28 20:21:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:13,402 INFO L124 PetriNetUnfolderBase]: 138/288 cut-off events. [2023-11-28 20:21:13,403 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-28 20:21:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 288 events. 138/288 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1163 event pairs, 138 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 542. Up to 243 conditions per place. [2023-11-28 20:21:13,405 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-28 20:21:13,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 108 flow [2023-11-28 20:21:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-28 20:21:13,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-28 20:21:13,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-28 20:21:13,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-28 20:21:13,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:13,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-28 20:21:13,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,409 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 74 flow. Second operand 3 states and 93 transitions. [2023-11-28 20:21:13,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 108 flow [2023-11-28 20:21:13,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:13,411 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 71 flow [2023-11-28 20:21:13,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-11-28 20:21:13,412 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -13 predicate places. [2023-11-28 20:21:13,412 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 71 flow [2023-11-28 20:21:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:13,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:13,413 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] [2023-11-28 20:21:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:21:13,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:13,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash -121484728, now seen corresponding path program 1 times [2023-11-28 20:21:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289132292] [2023-11-28 20:21:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289132292] [2023-11-28 20:21:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289132292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:17,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604858139] [2023-11-28 20:21:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:17,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:17,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-28 20:21:17,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:17,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:17,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-28 20:21:17,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:18,482 INFO L124 PetriNetUnfolderBase]: 190/380 cut-off events. [2023-11-28 20:21:18,483 INFO L125 PetriNetUnfolderBase]: For 23/24 co-relation queries the response was YES. [2023-11-28 20:21:18,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 380 events. 190/380 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1584 event pairs, 24 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 744. Up to 151 conditions per place. [2023-11-28 20:21:18,485 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 34 selfloop transitions, 6 changer transitions 10/62 dead transitions. [2023-11-28 20:21:18,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 247 flow [2023-11-28 20:21:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-28 20:21:18,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.776595744680851 [2023-11-28 20:21:18,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-28 20:21:18,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-28 20:21:18,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:18,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-28 20:21:18,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 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) [2023-11-28 20:21:18,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:18,490 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:18,490 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 71 flow. Second operand 6 states and 219 transitions. [2023-11-28 20:21:18,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 247 flow [2023-11-28 20:21:18,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:18,493 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 103 flow [2023-11-28 20:21:18,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-11-28 20:21:18,494 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2023-11-28 20:21:18,494 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 103 flow [2023-11-28 20:21:18,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:18,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:18,495 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] [2023-11-28 20:21:18,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:21:18,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:18,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash -219921500, now seen corresponding path program 2 times [2023-11-28 20:21:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:18,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082715627] [2023-11-28 20:21:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:20,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082715627] [2023-11-28 20:21:20,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082715627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:20,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:20,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53544184] [2023-11-28 20:21:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:20,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-28 20:21:20,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:20,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:20,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-28 20:21:20,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:21,402 INFO L124 PetriNetUnfolderBase]: 215/464 cut-off events. [2023-11-28 20:21:21,402 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-28 20:21:21,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 464 events. 215/464 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2156 event pairs, 26 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 1007. Up to 231 conditions per place. [2023-11-28 20:21:21,405 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 5 changer transitions 11/60 dead transitions. [2023-11-28 20:21:21,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 271 flow [2023-11-28 20:21:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2023-11-28 20:21:21,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7695035460992907 [2023-11-28 20:21:21,407 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 217 transitions. [2023-11-28 20:21:21,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 217 transitions. [2023-11-28 20:21:21,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:21,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 217 transitions. [2023-11-28 20:21:21,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:21,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:21,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:21,410 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 103 flow. Second operand 6 states and 217 transitions. [2023-11-28 20:21:21,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 271 flow [2023-11-28 20:21:21,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 267 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:21,414 INFO L231 Difference]: Finished difference. Result has 53 places, 33 transitions, 121 flow [2023-11-28 20:21:21,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=53, PETRI_TRANSITIONS=33} [2023-11-28 20:21:21,415 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-28 20:21:21,415 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 33 transitions, 121 flow [2023-11-28 20:21:21,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:21,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:21,415 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] [2023-11-28 20:21:21,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:21:21,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:21,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1506098268, now seen corresponding path program 3 times [2023-11-28 20:21:21,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:21,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797591585] [2023-11-28 20:21:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:21,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:24,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797591585] [2023-11-28 20:21:24,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797591585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:24,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:24,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:24,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000165218] [2023-11-28 20:21:24,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:24,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:24,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:24,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-28 20:21:24,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 33 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:24,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:24,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-28 20:21:24,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:25,323 INFO L124 PetriNetUnfolderBase]: 142/304 cut-off events. [2023-11-28 20:21:25,323 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-11-28 20:21:25,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 304 events. 142/304 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1193 event pairs, 9 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 722. Up to 93 conditions per place. [2023-11-28 20:21:25,325 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 30 selfloop transitions, 6 changer transitions 10/58 dead transitions. [2023-11-28 20:21:25,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 279 flow [2023-11-28 20:21:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2023-11-28 20:21:25,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7588652482269503 [2023-11-28 20:21:25,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 214 transitions. [2023-11-28 20:21:25,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 214 transitions. [2023-11-28 20:21:25,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:25,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 214 transitions. [2023-11-28 20:21:25,329 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) [2023-11-28 20:21:25,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:25,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:25,330 INFO L175 Difference]: Start difference. First operand has 53 places, 33 transitions, 121 flow. Second operand 6 states and 214 transitions. [2023-11-28 20:21:25,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 279 flow [2023-11-28 20:21:25,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 257 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-28 20:21:25,333 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 123 flow [2023-11-28 20:21:25,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2023-11-28 20:21:25,334 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-28 20:21:25,334 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 123 flow [2023-11-28 20:21:25,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:25,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:25,334 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] [2023-11-28 20:21:25,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:21:25,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:25,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:25,335 INFO L85 PathProgramCache]: Analyzing trace with hash -873092402, now seen corresponding path program 4 times [2023-11-28 20:21:25,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:25,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415039626] [2023-11-28 20:21:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:27,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:27,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415039626] [2023-11-28 20:21:27,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415039626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:27,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:27,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176027688] [2023-11-28 20:21:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:27,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-28 20:21:27,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:27,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-28 20:21:27,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:27,592 INFO L124 PetriNetUnfolderBase]: 143/333 cut-off events. [2023-11-28 20:21:27,592 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2023-11-28 20:21:27,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 333 events. 143/333 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1389 event pairs, 30 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 784. Up to 178 conditions per place. [2023-11-28 20:21:27,594 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 20 selfloop transitions, 4 changer transitions 15/51 dead transitions. [2023-11-28 20:21:27,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 249 flow [2023-11-28 20:21:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2023-11-28 20:21:27,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7340425531914894 [2023-11-28 20:21:27,596 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 207 transitions. [2023-11-28 20:21:27,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 207 transitions. [2023-11-28 20:21:27,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:27,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 207 transitions. [2023-11-28 20:21:27,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,598 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,598 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 123 flow. Second operand 6 states and 207 transitions. [2023-11-28 20:21:27,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 249 flow [2023-11-28 20:21:27,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:27,601 INFO L231 Difference]: Finished difference. Result has 57 places, 31 transitions, 117 flow [2023-11-28 20:21:27,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=57, PETRI_TRANSITIONS=31} [2023-11-28 20:21:27,601 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-11-28 20:21:27,602 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 31 transitions, 117 flow [2023-11-28 20:21:27,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:27,602 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] [2023-11-28 20:21:27,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:21:27,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:27,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1514954692, now seen corresponding path program 5 times [2023-11-28 20:21:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:27,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810277422] [2023-11-28 20:21:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:27,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:30,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810277422] [2023-11-28 20:21:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810277422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:30,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:30,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705774238] [2023-11-28 20:21:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:30,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:30,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:30,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:30,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-28 20:21:30,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 31 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:30,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-28 20:21:30,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:30,684 INFO L124 PetriNetUnfolderBase]: 79/183 cut-off events. [2023-11-28 20:21:30,684 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-11-28 20:21:30,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 183 events. 79/183 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 563 event pairs, 5 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 448. Up to 71 conditions per place. [2023-11-28 20:21:30,685 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 19 selfloop transitions, 3 changer transitions 9/43 dead transitions. [2023-11-28 20:21:30,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 43 transitions, 207 flow [2023-11-28 20:21:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2023-11-28 20:21:30,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056737588652482 [2023-11-28 20:21:30,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 199 transitions. [2023-11-28 20:21:30,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 199 transitions. [2023-11-28 20:21:30,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:30,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 199 transitions. [2023-11-28 20:21:30,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,690 INFO L175 Difference]: Start difference. First operand has 57 places, 31 transitions, 117 flow. Second operand 6 states and 199 transitions. [2023-11-28 20:21:30,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 43 transitions, 207 flow [2023-11-28 20:21:30,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 191 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-28 20:21:30,692 INFO L231 Difference]: Finished difference. Result has 54 places, 29 transitions, 93 flow [2023-11-28 20:21:30,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2023-11-28 20:21:30,693 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-28 20:21:30,693 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 29 transitions, 93 flow [2023-11-28 20:21:30,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:30,693 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] [2023-11-28 20:21:30,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:21:30,694 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-28 20:21:30,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:30,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1575901280, now seen corresponding path program 6 times [2023-11-28 20:21:30,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:30,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257482096] [2023-11-28 20:21:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:30,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257482096] [2023-11-28 20:21:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257482096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:33,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025526169] [2023-11-28 20:21:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:33,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:33,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-28 20:21:33,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 29 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:33,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:33,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-28 20:21:33,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:33,596 INFO L124 PetriNetUnfolderBase]: 42/101 cut-off events. [2023-11-28 20:21:33,596 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-11-28 20:21:33,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 101 events. 42/101 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 217 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 255. Up to 54 conditions per place. [2023-11-28 20:21:33,597 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-11-28 20:21:33,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 34 transitions, 148 flow [2023-11-28 20:21:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2023-11-28 20:21:33,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2023-11-28 20:21:33,598 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2023-11-28 20:21:33,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2023-11-28 20:21:33,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:33,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2023-11-28 20:21:33,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:33,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:33,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:33,600 INFO L175 Difference]: Start difference. First operand has 54 places, 29 transitions, 93 flow. Second operand 6 states and 192 transitions. [2023-11-28 20:21:33,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 34 transitions, 148 flow [2023-11-28 20:21:33,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 137 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-28 20:21:33,601 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-28 20:21:33,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-28 20:21:33,602 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-28 20:21:33,602 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-28 20:21:33,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:33,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-28 20:21:33,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-28 20:21:33,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-28 20:21:33,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-28 20:21:33,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-28 20:21:33,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-28 20:21:33,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-28 20:21:33,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-28 20:21:33,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-28 20:21:33,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-28 20:21:33,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-28 20:21:33,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-28 20:21:33,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-28 20:21:33,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-28 20:21:33,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-28 20:21:33,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-28 20:21:33,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-28 20:21:33,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:21:33,608 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:33,611 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 20:21:33,611 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:21:33,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:21:33 BasicIcfg [2023-11-28 20:21:33,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:21:33,616 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:21:33,616 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:21:33,616 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:21:33,616 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:11" (3/4) ... [2023-11-28 20:21:33,617 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:21:33,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 20:21:33,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 20:21:33,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-28 20:21:33,626 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2023-11-28 20:21:33,626 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-28 20:21:33,626 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-28 20:21:33,627 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 20:21:33,708 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:21:33,708 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:21:33,709 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:21:33,709 INFO L158 Benchmark]: Toolchain (without parser) took 24162.34ms. Allocated memory was 125.8MB in the beginning and 685.8MB in the end (delta: 559.9MB). Free memory was 64.3MB in the beginning and 529.7MB in the end (delta: -465.4MB). Peak memory consumption was 96.1MB. Max. memory is 16.1GB. [2023-11-28 20:21:33,710 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:21:33,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.78ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 64.0MB in the beginning and 132.5MB in the end (delta: -68.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2023-11-28 20:21:33,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.27ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 129.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:21:33,711 INFO L158 Benchmark]: Boogie Preprocessor took 66.09ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 125.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:21:33,711 INFO L158 Benchmark]: RCFGBuilder took 1278.40ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 125.6MB in the beginning and 135.4MB in the end (delta: -9.8MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. [2023-11-28 20:21:33,711 INFO L158 Benchmark]: TraceAbstraction took 22392.66ms. Allocated memory was 201.3MB in the beginning and 685.8MB in the end (delta: 484.4MB). Free memory was 135.4MB in the beginning and 536.0MB in the end (delta: -400.7MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. [2023-11-28 20:21:33,712 INFO L158 Benchmark]: Witness Printer took 93.15ms. Allocated memory is still 685.8MB. Free memory was 535.0MB in the beginning and 529.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-28 20:21:33,713 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.78ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 64.0MB in the beginning and 132.5MB in the end (delta: -68.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.27ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 129.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.09ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 125.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1278.40ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 125.6MB in the beginning and 135.4MB in the end (delta: -9.8MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22392.66ms. Allocated memory was 201.3MB in the beginning and 685.8MB in the end (delta: 484.4MB). Free memory was 135.4MB in the beginning and 536.0MB in the end (delta: -400.7MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. * Witness Printer took 93.15ms. Allocated memory is still 685.8MB. Free memory was 535.0MB in the beginning and 529.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: -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: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: 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, 63 locations, 17 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: 22.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 491 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 29 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=9, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 7487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 20:21:33,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b86aaed-2d3b-4915-9661-b2ccad5cc8b0/bin/uautomizer-verify-BQ2R08f2Ya/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