./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy10.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_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/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_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/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_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/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 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:59:44,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:59:44,759 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 06:59:44,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:59:44,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:59:44,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:59:44,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:59:44,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:59:44,788 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:59:44,789 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:59:44,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:59:44,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:59:44,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:59:44,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:59:44,792 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:59:44,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:59:44,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:59:44,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:59:44,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:59:44,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:59:44,794 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:59:44,795 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:59:44,795 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:59:44,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:59:44,796 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:59:44,796 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:59:44,797 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:59:44,797 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:59:44,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:59:44,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:59:44,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:59:44,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:59:44,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:59:44,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:59:44,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:59:44,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:59:44,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:59:44,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:59:44,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:59:44,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:59:44,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:59:44,801 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_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2023-11-29 06:59:45,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:59:45,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:59:45,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:59:45,071 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:59:45,071 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:59:45,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-11-29 06:59:47,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:59:47,966 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:59:47,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-11-29 06:59:47,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/data/1f1163b24/ab5eb22597044175a82055ab259cfa5f/FLAGfc1ee6830 [2023-11-29 06:59:47,990 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/data/1f1163b24/ab5eb22597044175a82055ab259cfa5f [2023-11-29 06:59:47,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:59:47,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:59:47,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:59:47,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:59:48,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:59:48,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:59:47" (1/1) ... [2023-11-29 06:59:48,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6f268a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48, skipping insertion in model container [2023-11-29 06:59:48,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:59:47" (1/1) ... [2023-11-29 06:59:48,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:59:48,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:59:48,225 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:59:48,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:59:48,263 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:59:48,263 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:59:48,271 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:59:48,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48 WrapperNode [2023-11-29 06:59:48,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:59:48,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:59:48,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:59:48,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:59:48,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,309 INFO L138 Inliner]: procedures = 23, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 197 [2023-11-29 06:59:48,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:59:48,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:59:48,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:59:48,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:59:48,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,335 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 06:59:48,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:59:48,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:59:48,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:59:48,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:59:48,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (1/1) ... [2023-11-29 06:59:48,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:59:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:59:48,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:59:48,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce4ef7d2-127d-4fc1-90bd-54ba4e9f170b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:59:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:59:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:59:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:59:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:59:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:59:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 06:59:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 06:59:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 06:59:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 06:59:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:59:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:59:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:59:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:59:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:59:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:59:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:59:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:59:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:59:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:59:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 06:59:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:59:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:59:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:59:48,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:59:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:59:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:59:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:59:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:59:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 06:59:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:59:48,416 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:59:48,537 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:59:48,539 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:59:48,824 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:59:49,022 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:59:49,022 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:59:49,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:49 BoogieIcfgContainer [2023-11-29 06:59:49,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:59:49,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:59:49,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:59:49,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:59:49,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:59:47" (1/3) ... [2023-11-29 06:59:49,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7af14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:59:49, skipping insertion in model container [2023-11-29 06:59:49,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:48" (2/3) ... [2023-11-29 06:59:49,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7af14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:59:49, skipping insertion in model container [2023-11-29 06:59:49,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:49" (3/3) ... [2023-11-29 06:59:49,032 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-11-29 06:59:49,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:59:49,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 06:59:49,048 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:59:49,104 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 06:59:49,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 81 transitions, 190 flow [2023-11-29 06:59:49,178 INFO L124 PetriNetUnfolderBase]: 0/77 cut-off events. [2023-11-29 06:59:49,178 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 06:59:49,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 77 events. 0/77 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 168 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-29 06:59:49,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 81 transitions, 190 flow [2023-11-29 06:59:49,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 76 transitions, 176 flow [2023-11-29 06:59:49,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:59:49,202 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;@24059cc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:59:49,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 06:59:49,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:59:49,206 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 06:59:49,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:59:49,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:49,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 06:59:49,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:49,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash 12619, now seen corresponding path program 1 times [2023-11-29 06:59:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:49,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561586798] [2023-11-29 06:59:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:49,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:49,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561586798] [2023-11-29 06:59:49,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561586798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:49,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:49,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:49,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037161942] [2023-11-29 06:59:49,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:49,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:49,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-29 06:59:49,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:49,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:49,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-29 06:59:49,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:50,032 INFO L124 PetriNetUnfolderBase]: 772/1732 cut-off events. [2023-11-29 06:59:50,033 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-11-29 06:59:50,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1732 events. 772/1732 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 12577 event pairs, 772 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 2564. Up to 1136 conditions per place. [2023-11-29 06:59:50,060 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-11-29 06:59:50,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 216 flow [2023-11-29 06:59:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-11-29 06:59:50,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2023-11-29 06:59:50,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-11-29 06:59:50,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-11-29 06:59:50,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:50,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-11-29 06:59:50,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,088 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 176 flow. Second operand 3 states and 186 transitions. [2023-11-29 06:59:50,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 216 flow [2023-11-29 06:59:50,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 200 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 06:59:50,100 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 154 flow [2023-11-29 06:59:50,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-11-29 06:59:50,106 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -10 predicate places. [2023-11-29 06:59:50,106 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 154 flow [2023-11-29 06:59:50,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:50,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 06:59:50,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:59:50,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:50,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 12620, now seen corresponding path program 1 times [2023-11-29 06:59:50,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:50,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929076968] [2023-11-29 06:59:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:50,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929076968] [2023-11-29 06:59:50,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929076968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:50,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:50,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:50,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428130737] [2023-11-29 06:59:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:50,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:50,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-29 06:59:50,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:50,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-29 06:59:50,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:50,473 INFO L124 PetriNetUnfolderBase]: 556/1434 cut-off events. [2023-11-29 06:59:50,473 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 06:59:50,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 1434 events. 556/1434 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10491 event pairs, 556 based on Foata normal form. 82/1257 useless extension candidates. Maximal degree in co-relation 2310. Up to 838 conditions per place. [2023-11-29 06:59:50,483 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-11-29 06:59:50,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 194 flow [2023-11-29 06:59:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 06:59:50,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-29 06:59:50,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 06:59:50,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 06:59:50,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:50,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 06:59:50,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,491 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 154 flow. Second operand 3 states and 189 transitions. [2023-11-29 06:59:50,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 194 flow [2023-11-29 06:59:50,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:50,493 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 151 flow [2023-11-29 06:59:50,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-11-29 06:59:50,494 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -11 predicate places. [2023-11-29 06:59:50,495 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 151 flow [2023-11-29 06:59:50,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:50,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:59:50,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:59:50,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:50,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 376334815, now seen corresponding path program 1 times [2023-11-29 06:59:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:50,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894727308] [2023-11-29 06:59:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:50,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:50,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894727308] [2023-11-29 06:59:50,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894727308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:50,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:50,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:50,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425106975] [2023-11-29 06:59:50,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:50,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:50,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:50,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:50,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-29 06:59:50,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:50,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-29 06:59:50,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:50,812 INFO L124 PetriNetUnfolderBase]: 612/1460 cut-off events. [2023-11-29 06:59:50,813 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-29 06:59:50,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 1460 events. 612/1460 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10531 event pairs, 612 based on Foata normal form. 0/1259 useless extension candidates. Maximal degree in co-relation 2422. Up to 924 conditions per place. [2023-11-29 06:59:50,823 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-29 06:59:50,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 195 flow [2023-11-29 06:59:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-29 06:59:50,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2023-11-29 06:59:50,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-29 06:59:50,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-29 06:59:50,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:50,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-29 06:59:50,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,829 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 151 flow. Second operand 3 states and 185 transitions. [2023-11-29 06:59:50,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 68 transitions, 195 flow [2023-11-29 06:59:50,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 68 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:50,832 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 148 flow [2023-11-29 06:59:50,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2023-11-29 06:59:50,833 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -12 predicate places. [2023-11-29 06:59:50,833 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 148 flow [2023-11-29 06:59:50,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:50,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:59:50,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:59:50,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:50,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash 376334816, now seen corresponding path program 1 times [2023-11-29 06:59:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240802306] [2023-11-29 06:59:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:50,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:50,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240802306] [2023-11-29 06:59:50,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240802306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:50,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:50,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352095190] [2023-11-29 06:59:50,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:50,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:50,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:50,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-29 06:59:50,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:50,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:50,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-29 06:59:50,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:51,157 INFO L124 PetriNetUnfolderBase]: 556/1374 cut-off events. [2023-11-29 06:59:51,157 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 06:59:51,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1374 events. 556/1374 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9886 event pairs, 556 based on Foata normal form. 30/1205 useless extension candidates. Maximal degree in co-relation 2250. Up to 838 conditions per place. [2023-11-29 06:59:51,167 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-11-29 06:59:51,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 188 flow [2023-11-29 06:59:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 06:59:51,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-29 06:59:51,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 06:59:51,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 06:59:51,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:51,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 06:59:51,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,173 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 148 flow. Second operand 3 states and 189 transitions. [2023-11-29 06:59:51,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 188 flow [2023-11-29 06:59:51,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:51,176 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 145 flow [2023-11-29 06:59:51,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-11-29 06:59:51,177 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -13 predicate places. [2023-11-29 06:59:51,177 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 145 flow [2023-11-29 06:59:51,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:51,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:51,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:59:51,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:51,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1526238028, now seen corresponding path program 1 times [2023-11-29 06:59:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:51,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450899939] [2023-11-29 06:59:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450899939] [2023-11-29 06:59:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450899939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:51,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:51,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:51,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220468453] [2023-11-29 06:59:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:51,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:51,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:51,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:51,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-29 06:59:51,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:51,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-29 06:59:51,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:51,450 INFO L124 PetriNetUnfolderBase]: 580/1380 cut-off events. [2023-11-29 06:59:51,450 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 06:59:51,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1380 events. 580/1380 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9830 event pairs, 580 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 2298. Up to 880 conditions per place. [2023-11-29 06:59:51,460 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-29 06:59:51,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 189 flow [2023-11-29 06:59:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-29 06:59:51,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2023-11-29 06:59:51,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-29 06:59:51,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-29 06:59:51,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:51,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-29 06:59:51,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,465 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 145 flow. Second operand 3 states and 185 transitions. [2023-11-29 06:59:51,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 189 flow [2023-11-29 06:59:51,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 64 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:51,467 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 142 flow [2023-11-29 06:59:51,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-11-29 06:59:51,468 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2023-11-29 06:59:51,468 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 142 flow [2023-11-29 06:59:51,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:51,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:51,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:59:51,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:51,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:51,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1526238029, now seen corresponding path program 1 times [2023-11-29 06:59:51,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:51,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332172261] [2023-11-29 06:59:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:51,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:51,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:51,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332172261] [2023-11-29 06:59:51,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332172261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:51,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342943447] [2023-11-29 06:59:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:51,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-29 06:59:51,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:51,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-29 06:59:51,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:51,746 INFO L124 PetriNetUnfolderBase]: 556/1338 cut-off events. [2023-11-29 06:59:51,747 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 06:59:51,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1338 events. 556/1338 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9529 event pairs, 556 based on Foata normal form. 18/1193 useless extension candidates. Maximal degree in co-relation 2214. Up to 838 conditions per place. [2023-11-29 06:59:51,757 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-29 06:59:51,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 62 transitions, 182 flow [2023-11-29 06:59:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 06:59:51,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-29 06:59:51,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 06:59:51,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 06:59:51,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:51,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 06:59:51,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,762 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 142 flow. Second operand 3 states and 189 transitions. [2023-11-29 06:59:51,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 62 transitions, 182 flow [2023-11-29 06:59:51,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 62 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:51,764 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 139 flow [2023-11-29 06:59:51,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2023-11-29 06:59:51,765 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2023-11-29 06:59:51,765 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 139 flow [2023-11-29 06:59:51,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:51,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:51,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:59:51,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:51,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1633701250, now seen corresponding path program 1 times [2023-11-29 06:59:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:51,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308444062] [2023-11-29 06:59:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:51,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:51,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308444062] [2023-11-29 06:59:51,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308444062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:51,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:51,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:51,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559085778] [2023-11-29 06:59:51,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:51,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:51,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:51,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:51,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-29 06:59:51,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:51,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:51,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-29 06:59:51,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:52,018 INFO L124 PetriNetUnfolderBase]: 556/1308 cut-off events. [2023-11-29 06:59:52,018 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 06:59:52,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 1308 events. 556/1308 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9133 event pairs, 556 based on Foata normal form. 30/1205 useless extension candidates. Maximal degree in co-relation 2184. Up to 838 conditions per place. [2023-11-29 06:59:52,029 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-11-29 06:59:52,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 179 flow [2023-11-29 06:59:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:52,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 06:59:52,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-29 06:59:52,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 06:59:52,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 06:59:52,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:52,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 06:59:52,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,034 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 139 flow. Second operand 3 states and 189 transitions. [2023-11-29 06:59:52,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 179 flow [2023-11-29 06:59:52,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:52,035 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 136 flow [2023-11-29 06:59:52,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2023-11-29 06:59:52,036 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -16 predicate places. [2023-11-29 06:59:52,036 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 136 flow [2023-11-29 06:59:52,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:52,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:52,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:59:52,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:52,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1633701249, now seen corresponding path program 1 times [2023-11-29 06:59:52,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:52,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75953760] [2023-11-29 06:59:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:52,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:52,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:52,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75953760] [2023-11-29 06:59:52,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75953760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:52,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:52,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:59:52,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891509200] [2023-11-29 06:59:52,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:52,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:52,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:52,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-29 06:59:52,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:52,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-29 06:59:52,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:52,265 INFO L124 PetriNetUnfolderBase]: 612/1334 cut-off events. [2023-11-29 06:59:52,266 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-29 06:59:52,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 1334 events. 612/1334 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9073 event pairs, 612 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 2296. Up to 924 conditions per place. [2023-11-29 06:59:52,276 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-11-29 06:59:52,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 58 transitions, 180 flow [2023-11-29 06:59:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-29 06:59:52,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2023-11-29 06:59:52,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-29 06:59:52,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-29 06:59:52,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:52,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-29 06:59:52,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,281 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 136 flow. Second operand 3 states and 185 transitions. [2023-11-29 06:59:52,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 58 transitions, 180 flow [2023-11-29 06:59:52,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:52,282 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 133 flow [2023-11-29 06:59:52,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-11-29 06:59:52,283 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -17 predicate places. [2023-11-29 06:59:52,284 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 133 flow [2023-11-29 06:59:52,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:52,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:52,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:59:52,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:52,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:52,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1482862844, now seen corresponding path program 1 times [2023-11-29 06:59:52,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:52,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499921936] [2023-11-29 06:59:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:52,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:52,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499921936] [2023-11-29 06:59:52,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499921936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:52,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:52,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:59:52,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994674642] [2023-11-29 06:59:52,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:52,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:52,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:52,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-29 06:59:52,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:52,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-29 06:59:52,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:52,605 INFO L124 PetriNetUnfolderBase]: 597/1234 cut-off events. [2023-11-29 06:59:52,605 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-29 06:59:52,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 1234 events. 597/1234 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7670 event pairs, 142 based on Foata normal form. 25/1223 useless extension candidates. Maximal degree in co-relation 2175. Up to 853 conditions per place. [2023-11-29 06:59:52,613 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 30 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-29 06:59:52,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 217 flow [2023-11-29 06:59:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:52,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-11-29 06:59:52,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8271604938271605 [2023-11-29 06:59:52,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-11-29 06:59:52,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-11-29 06:59:52,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:52,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-11-29 06:59:52,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,616 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 133 flow. Second operand 3 states and 201 transitions. [2023-11-29 06:59:52,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 217 flow [2023-11-29 06:59:52,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:59:52,618 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 140 flow [2023-11-29 06:59:52,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2023-11-29 06:59:52,619 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2023-11-29 06:59:52,619 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 140 flow [2023-11-29 06:59:52,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:52,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:52,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:59:52,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:52,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash 508274962, now seen corresponding path program 2 times [2023-11-29 06:59:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:52,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339407197] [2023-11-29 06:59:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:52,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:52,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339407197] [2023-11-29 06:59:52,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339407197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:52,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:52,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:59:52,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013508870] [2023-11-29 06:59:52,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:52,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:59:52,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:59:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:59:52,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-29 06:59:52,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:52,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-29 06:59:52,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:59:52,927 INFO L124 PetriNetUnfolderBase]: 507/1050 cut-off events. [2023-11-29 06:59:52,927 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-29 06:59:52,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 1050 events. 507/1050 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6323 event pairs, 156 based on Foata normal form. 26/1032 useless extension candidates. Maximal degree in co-relation 1913. Up to 645 conditions per place. [2023-11-29 06:59:52,935 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 28 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-29 06:59:52,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 218 flow [2023-11-29 06:59:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:59:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:59:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-11-29 06:59:52,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8189300411522634 [2023-11-29 06:59:52,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-11-29 06:59:52,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-11-29 06:59:52,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:59:52,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-11-29 06:59:52,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 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) [2023-11-29 06:59:52,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,939 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 140 flow. Second operand 3 states and 199 transitions. [2023-11-29 06:59:52,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 218 flow [2023-11-29 06:59:52,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:59:52,942 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 144 flow [2023-11-29 06:59:52,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2023-11-29 06:59:52,943 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2023-11-29 06:59:52,943 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 144 flow [2023-11-29 06:59:52,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:52,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:59:52,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:52,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:59:52,944 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 06:59:52,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 54161014, now seen corresponding path program 3 times [2023-11-29 06:59:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:52,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892581473] [2023-11-29 06:59:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:59:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892581473] [2023-11-29 06:59:55,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892581473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:55,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:59:55,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:59:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299416775] [2023-11-29 06:59:55,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:59:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:59:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:59:55,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-29 06:59:55,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 144 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:59:55,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:59:55,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-29 06:59:55,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:00:00,483 INFO L124 PetriNetUnfolderBase]: 22288/32865 cut-off events. [2023-11-29 07:00:00,484 INFO L125 PetriNetUnfolderBase]: For 2608/2692 co-relation queries the response was YES. [2023-11-29 07:00:00,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66440 conditions, 32865 events. 22288/32865 cut-off events. For 2608/2692 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 220124 event pairs, 2239 based on Foata normal form. 43/32898 useless extension candidates. Maximal degree in co-relation 66424. Up to 7260 conditions per place. [2023-11-29 07:00:00,704 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 215 selfloop transitions, 14 changer transitions 19/268 dead transitions. [2023-11-29 07:00:00,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 268 transitions, 1120 flow [2023-11-29 07:00:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:00:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 07:00:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 823 transitions. [2023-11-29 07:00:00,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7257495590828924 [2023-11-29 07:00:00,709 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 823 transitions. [2023-11-29 07:00:00,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 823 transitions. [2023-11-29 07:00:00,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:00:00,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 823 transitions. [2023-11-29 07:00:00,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.785714285714285) internal successors, (823), 14 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:00,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:00,715 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:00,715 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 144 flow. Second operand 14 states and 823 transitions. [2023-11-29 07:00:00,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 268 transitions, 1120 flow [2023-11-29 07:00:00,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 268 transitions, 1116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:00:00,723 INFO L231 Difference]: Finished difference. Result has 98 places, 71 transitions, 253 flow [2023-11-29 07:00:00,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=253, PETRI_PLACES=98, PETRI_TRANSITIONS=71} [2023-11-29 07:00:00,724 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2023-11-29 07:00:00,724 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 71 transitions, 253 flow [2023-11-29 07:00:00,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:00,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:00:00,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:00,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 07:00:00,725 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 07:00:00,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash -985381992, now seen corresponding path program 4 times [2023-11-29 07:00:00,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:00,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446302170] [2023-11-29 07:00:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:00,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:00,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:00,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446302170] [2023-11-29 07:00:00,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446302170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:00,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:00,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:00:00,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346545255] [2023-11-29 07:00:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:00,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:00:00,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:00:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:00:00,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-29 07:00:00,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 71 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:00,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:00:00,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-29 07:00:00,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:00:01,364 INFO L124 PetriNetUnfolderBase]: 2554/5150 cut-off events. [2023-11-29 07:00:01,364 INFO L125 PetriNetUnfolderBase]: For 1314/1670 co-relation queries the response was YES. [2023-11-29 07:00:01,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11331 conditions, 5150 events. 2554/5150 cut-off events. For 1314/1670 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 41164 event pairs, 721 based on Foata normal form. 57/4726 useless extension candidates. Maximal degree in co-relation 11304. Up to 3418 conditions per place. [2023-11-29 07:00:01,401 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 30 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-29 07:00:01,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 80 transitions, 340 flow [2023-11-29 07:00:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:00:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:00:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-11-29 07:00:01,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8271604938271605 [2023-11-29 07:00:01,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-11-29 07:00:01,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-11-29 07:00:01,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:00:01,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-11-29 07:00:01,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,405 INFO L175 Difference]: Start difference. First operand has 98 places, 71 transitions, 253 flow. Second operand 3 states and 201 transitions. [2023-11-29 07:00:01,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 80 transitions, 340 flow [2023-11-29 07:00:01,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 80 transitions, 335 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 07:00:01,430 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 256 flow [2023-11-29 07:00:01,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2023-11-29 07:00:01,431 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2023-11-29 07:00:01,431 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 256 flow [2023-11-29 07:00:01,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:00:01,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:01,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 07:00:01,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 07:00:01,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:01,433 INFO L85 PathProgramCache]: Analyzing trace with hash -183344146, now seen corresponding path program 5 times [2023-11-29 07:00:01,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:01,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146025008] [2023-11-29 07:00:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146025008] [2023-11-29 07:00:01,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146025008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:01,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:01,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:00:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547047776] [2023-11-29 07:00:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:01,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:00:01,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:00:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:00:01,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-29 07:00:01,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:00:01,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-29 07:00:01,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:00:01,951 INFO L124 PetriNetUnfolderBase]: 2112/4384 cut-off events. [2023-11-29 07:00:01,951 INFO L125 PetriNetUnfolderBase]: For 1051/1073 co-relation queries the response was YES. [2023-11-29 07:00:01,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 4384 events. 2112/4384 cut-off events. For 1051/1073 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 34815 event pairs, 984 based on Foata normal form. 24/4019 useless extension candidates. Maximal degree in co-relation 9482. Up to 3135 conditions per place. [2023-11-29 07:00:01,981 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 32 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-29 07:00:01,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 81 transitions, 347 flow [2023-11-29 07:00:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:00:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:00:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-11-29 07:00:01,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8353909465020576 [2023-11-29 07:00:01,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-11-29 07:00:01,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-11-29 07:00:01,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:00:01,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-11-29 07:00:01,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,985 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 256 flow. Second operand 3 states and 203 transitions. [2023-11-29 07:00:01,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 81 transitions, 347 flow [2023-11-29 07:00:01,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 81 transitions, 341 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 07:00:01,992 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 252 flow [2023-11-29 07:00:01,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2023-11-29 07:00:01,993 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2023-11-29 07:00:01,993 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 252 flow [2023-11-29 07:00:01,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:01,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:00:01,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:01,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 07:00:01,994 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 07:00:01,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1606885670, now seen corresponding path program 6 times [2023-11-29 07:00:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:01,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442336980] [2023-11-29 07:00:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:03,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442336980] [2023-11-29 07:00:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442336980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:03,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:03,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 07:00:03,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331683500] [2023-11-29 07:00:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:00:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:00:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:00:04,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-29 07:00:04,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 252 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:04,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:00:04,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-29 07:00:04,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:00:09,145 INFO L124 PetriNetUnfolderBase]: 28762/42581 cut-off events. [2023-11-29 07:00:09,145 INFO L125 PetriNetUnfolderBase]: For 29072/29093 co-relation queries the response was YES. [2023-11-29 07:00:09,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112241 conditions, 42581 events. 28762/42581 cut-off events. For 29072/29093 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 285035 event pairs, 4924 based on Foata normal form. 10/42572 useless extension candidates. Maximal degree in co-relation 112213. Up to 12073 conditions per place. [2023-11-29 07:00:09,504 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 256 selfloop transitions, 26 changer transitions 10/312 dead transitions. [2023-11-29 07:00:09,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 312 transitions, 1714 flow [2023-11-29 07:00:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:00:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 07:00:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 814 transitions. [2023-11-29 07:00:09,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7178130511463845 [2023-11-29 07:00:09,509 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 814 transitions. [2023-11-29 07:00:09,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 814 transitions. [2023-11-29 07:00:09,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:00:09,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 814 transitions. [2023-11-29 07:00:09,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.142857142857146) internal successors, (814), 14 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:09,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:09,516 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:09,516 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 252 flow. Second operand 14 states and 814 transitions. [2023-11-29 07:00:09,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 312 transitions, 1714 flow [2023-11-29 07:00:09,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 312 transitions, 1710 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:00:09,725 INFO L231 Difference]: Finished difference. Result has 119 places, 89 transitions, 479 flow [2023-11-29 07:00:09,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=479, PETRI_PLACES=119, PETRI_TRANSITIONS=89} [2023-11-29 07:00:09,726 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 30 predicate places. [2023-11-29 07:00:09,726 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 89 transitions, 479 flow [2023-11-29 07:00:09,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:09,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:00:09,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 07:00:09,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 07:00:09,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1458699866, now seen corresponding path program 7 times [2023-11-29 07:00:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708557347] [2023-11-29 07:00:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:11,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:11,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708557347] [2023-11-29 07:00:11,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708557347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:11,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 07:00:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114672591] [2023-11-29 07:00:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:11,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:00:11,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:00:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:00:11,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-29 07:00:11,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 89 transitions, 479 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:11,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:00:11,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-29 07:00:11,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:00:22,795 INFO L124 PetriNetUnfolderBase]: 61012/92399 cut-off events. [2023-11-29 07:00:22,795 INFO L125 PetriNetUnfolderBase]: For 157302/157530 co-relation queries the response was YES. [2023-11-29 07:00:23,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280370 conditions, 92399 events. 61012/92399 cut-off events. For 157302/157530 co-relation queries the response was YES. Maximal size of possible extension queue 3090. Compared 730642 event pairs, 11415 based on Foata normal form. 78/92405 useless extension candidates. Maximal degree in co-relation 280332. Up to 24982 conditions per place. [2023-11-29 07:00:23,685 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 302 selfloop transitions, 30 changer transitions 10/362 dead transitions. [2023-11-29 07:00:23,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 362 transitions, 2571 flow [2023-11-29 07:00:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:00:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 07:00:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 820 transitions. [2023-11-29 07:00:23,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7231040564373897 [2023-11-29 07:00:23,690 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 820 transitions. [2023-11-29 07:00:23,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 820 transitions. [2023-11-29 07:00:23,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:00:23,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 820 transitions. [2023-11-29 07:00:23,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.57142857142857) internal successors, (820), 14 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:23,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:23,697 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:23,697 INFO L175 Difference]: Start difference. First operand has 119 places, 89 transitions, 479 flow. Second operand 14 states and 820 transitions. [2023-11-29 07:00:23,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 362 transitions, 2571 flow [2023-11-29 07:00:26,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 362 transitions, 2495 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-11-29 07:00:26,121 INFO L231 Difference]: Finished difference. Result has 141 places, 112 transitions, 808 flow [2023-11-29 07:00:26,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=808, PETRI_PLACES=141, PETRI_TRANSITIONS=112} [2023-11-29 07:00:26,122 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 52 predicate places. [2023-11-29 07:00:26,122 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 112 transitions, 808 flow [2023-11-29 07:00:26,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:26,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:00:26,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:26,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 07:00:26,123 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 07:00:26,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1457438396, now seen corresponding path program 8 times [2023-11-29 07:00:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:26,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552518978] [2023-11-29 07:00:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:27,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:27,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552518978] [2023-11-29 07:00:27,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552518978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:27,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:27,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 07:00:27,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431092462] [2023-11-29 07:00:27,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:27,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:00:27,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:00:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:00:27,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-29 07:00:27,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 112 transitions, 808 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:27,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:00:27,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-29 07:00:27,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:00:44,031 INFO L124 PetriNetUnfolderBase]: 84922/129059 cut-off events. [2023-11-29 07:00:44,031 INFO L125 PetriNetUnfolderBase]: For 362718/362802 co-relation queries the response was YES. [2023-11-29 07:00:45,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427730 conditions, 129059 events. 84922/129059 cut-off events. For 362718/362802 co-relation queries the response was YES. Maximal size of possible extension queue 4754. Compared 1068598 event pairs, 16141 based on Foata normal form. 42/128971 useless extension candidates. Maximal degree in co-relation 427681. Up to 37272 conditions per place. [2023-11-29 07:00:45,589 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 343 selfloop transitions, 44 changer transitions 10/417 dead transitions. [2023-11-29 07:00:45,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 417 transitions, 3595 flow [2023-11-29 07:00:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:00:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 07:00:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 820 transitions. [2023-11-29 07:00:45,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7231040564373897 [2023-11-29 07:00:45,593 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 820 transitions. [2023-11-29 07:00:45,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 820 transitions. [2023-11-29 07:00:45,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:00:45,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 820 transitions. [2023-11-29 07:00:45,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.57142857142857) internal successors, (820), 14 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:45,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:45,599 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:45,599 INFO L175 Difference]: Start difference. First operand has 141 places, 112 transitions, 808 flow. Second operand 14 states and 820 transitions. [2023-11-29 07:00:45,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 417 transitions, 3595 flow [2023-11-29 07:00:53,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 417 transitions, 3459 flow, removed 60 selfloop flow, removed 2 redundant places. [2023-11-29 07:00:53,462 INFO L231 Difference]: Finished difference. Result has 163 places, 143 transitions, 1305 flow [2023-11-29 07:00:53,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1305, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2023-11-29 07:00:53,463 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 74 predicate places. [2023-11-29 07:00:53,463 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 143 transitions, 1305 flow [2023-11-29 07:00:53,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:53,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:00:53,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:53,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 07:00:53,464 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 07:00:53,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1010694160, now seen corresponding path program 9 times [2023-11-29 07:00:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863029665] [2023-11-29 07:00:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:53,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:55,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863029665] [2023-11-29 07:00:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863029665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:55,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:55,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 07:00:55,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782157757] [2023-11-29 07:00:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:55,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:00:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:00:55,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:00:55,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-29 07:00:55,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 143 transitions, 1305 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:55,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:00:55,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-29 07:00:55,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:29,808 INFO L124 PetriNetUnfolderBase]: 152661/237405 cut-off events. [2023-11-29 07:01:29,808 INFO L125 PetriNetUnfolderBase]: For 1073646/1074552 co-relation queries the response was YES. [2023-11-29 07:01:32,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858246 conditions, 237405 events. 152661/237405 cut-off events. For 1073646/1074552 co-relation queries the response was YES. Maximal size of possible extension queue 9852. Compared 2205367 event pairs, 34109 based on Foata normal form. 249/237361 useless extension candidates. Maximal degree in co-relation 858186. Up to 76419 conditions per place. [2023-11-29 07:01:33,145 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 429 selfloop transitions, 60 changer transitions 10/519 dead transitions. [2023-11-29 07:01:33,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 519 transitions, 5445 flow [2023-11-29 07:01:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:01:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 07:01:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 832 transitions. [2023-11-29 07:01:33,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7336860670194003 [2023-11-29 07:01:33,150 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 832 transitions. [2023-11-29 07:01:33,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 832 transitions. [2023-11-29 07:01:33,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:33,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 832 transitions. [2023-11-29 07:01:33,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 59.42857142857143) internal successors, (832), 14 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:33,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:33,158 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:33,158 INFO L175 Difference]: Start difference. First operand has 163 places, 143 transitions, 1305 flow. Second operand 14 states and 832 transitions. [2023-11-29 07:01:33,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 519 transitions, 5445 flow [2023-11-29 07:02:19,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 519 transitions, 5254 flow, removed 89 selfloop flow, removed 2 redundant places. [2023-11-29 07:02:19,602 INFO L231 Difference]: Finished difference. Result has 184 places, 187 transitions, 2079 flow [2023-11-29 07:02:19,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2079, PETRI_PLACES=184, PETRI_TRANSITIONS=187} [2023-11-29 07:02:19,603 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 95 predicate places. [2023-11-29 07:02:19,603 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 187 transitions, 2079 flow [2023-11-29 07:02:19,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:19,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:02:19,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:02:19,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 07:02:19,604 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 07:02:19,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1567847528, now seen corresponding path program 10 times [2023-11-29 07:02:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872851908] [2023-11-29 07:02:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:02:20,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:20,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872851908] [2023-11-29 07:02:20,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872851908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:02:20,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:02:20,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 07:02:20,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211308051] [2023-11-29 07:02:20,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:02:20,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:02:20,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:20,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:02:20,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:02:21,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-29 07:02:21,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 187 transitions, 2079 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:21,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:02:21,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-29 07:02:21,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand