./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU --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 a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:00:47,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:00:47,380 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:00:47,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:00:47,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:00:47,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:00:47,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:00:47,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:00:47,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:00:47,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:00:47,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:00:47,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:00:47,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:00:47,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:00:47,435 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:00:47,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:00:47,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:00:47,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:00:47,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:00:47,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:00:47,438 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:00:47,442 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:00:47,442 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:00:47,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:00:47,443 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:00:47,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:00:47,444 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:00:47,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:00:47,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:00:47,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:00:47,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:00:47,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:00:47,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:00:47,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:47,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:00:47,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:00:47,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:00:47,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:00:47,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:00:47,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:00:47,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:00:47,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:00:47,453 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_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2024-10-31 22:00:47,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:00:47,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:00:47,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:00:47,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:00:47,814 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:00:47,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i Unable to find full path for "g++" [2024-10-31 22:00:49,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:00:50,031 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:00:50,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2024-10-31 22:00:50,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/data/657117c55/d3af3a126757433f8a48d04d9dac67cc/FLAG17ede2056 [2024-10-31 22:00:50,063 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/data/657117c55/d3af3a126757433f8a48d04d9dac67cc [2024-10-31 22:00:50,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:00:50,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:00:50,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:50,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:00:50,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:00:50,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e868eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50, skipping insertion in model container [2024-10-31 22:00:50,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,152 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:00:50,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:50,642 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:00:50,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:50,776 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:00:50,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50 WrapperNode [2024-10-31 22:00:50,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:50,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:50,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:00:50,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:00:50,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,848 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 164 [2024-10-31 22:00:50,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:50,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:00:50,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:00:50,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:00:50,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,892 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 9, 6, 6]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 1, 2, 0]. The 8 writes are split as follows [0, 2, 2, 4]. [2024-10-31 22:00:50,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:00:50,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:00:50,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:00:50,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:00:50,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (1/1) ... [2024-10-31 22:00:50,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:50,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:50,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:00:50,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f926b4a-71da-4dbe-8652-79be27a3ca3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:00:50,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:00:50,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:00:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:00:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:00:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:00:50,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:00:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:00:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:00:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:00:50,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:00:50,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:00:50,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:00:50,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:00:50,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:00:50,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:00:50,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:00:50,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:00:50,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:00:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:00:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:00:50,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:00:51,001 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:00:51,223 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:00:51,226 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:00:51,687 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:00:51,688 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:00:52,119 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:00:52,119 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:00:52,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:52 BoogieIcfgContainer [2024-10-31 22:00:52,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:00:52,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:00:52,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:00:52,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:00:52,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:00:50" (1/3) ... [2024-10-31 22:00:52,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a705497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:52, skipping insertion in model container [2024-10-31 22:00:52,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:50" (2/3) ... [2024-10-31 22:00:52,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a705497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:52, skipping insertion in model container [2024-10-31 22:00:52,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:52" (3/3) ... [2024-10-31 22:00:52,129 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2024-10-31 22:00:52,148 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:00:52,149 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2024-10-31 22:00:52,149 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:00:52,351 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:00:52,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 73 transitions, 150 flow [2024-10-31 22:00:52,444 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2024-10-31 22:00:52,445 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:52,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 8/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 397 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2024-10-31 22:00:52,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 73 transitions, 150 flow [2024-10-31 22:00:52,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 73 transitions, 150 flow [2024-10-31 22:00:52,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:52,479 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3c618be8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:52,479 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2024-10-31 22:00:52,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:00:52,483 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:00:52,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:52,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:52,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:00:52,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-10-31 22:00:52,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 564497, now seen corresponding path program 1 times [2024-10-31 22:00:52,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868258409] [2024-10-31 22:00:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868258409] [2024-10-31 22:00:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868258409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:52,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:52,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783676314] [2024-10-31 22:00:52,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:52,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:00:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:00:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:00:52,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 73 [2024-10-31 22:00:52,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:52,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:52,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 73 [2024-10-31 22:00:52,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:53,043 INFO L124 PetriNetUnfolderBase]: 112/277 cut-off events. [2024-10-31 22:00:53,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:53,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 277 events. 112/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1348 event pairs, 94 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 528. Up to 259 conditions per place. [2024-10-31 22:00:53,049 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 57 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-10-31 22:00:53,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 246 flow [2024-10-31 22:00:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:00:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:00:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-10-31 22:00:53,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-10-31 22:00:53,071 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 150 flow. Second operand 2 states and 80 transitions. [2024-10-31 22:00:53,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 246 flow [2024-10-31 22:00:53,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:00:53,079 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 132 flow [2024-10-31 22:00:53,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-10-31 22:00:53,089 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-10-31 22:00:53,089 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 132 flow [2024-10-31 22:00:53,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:53,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:53,090 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:00:53,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:00:53,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-10-31 22:00:53,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:53,091 INFO L85 PathProgramCache]: Analyzing trace with hash -359184895, now seen corresponding path program 1 times [2024-10-31 22:00:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:53,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849960548] [2024-10-31 22:00:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:53,129 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:00:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:53,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:00:53,169 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:00:53,171 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2024-10-31 22:00:53,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2024-10-31 22:00:53,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2024-10-31 22:00:53,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2024-10-31 22:00:53,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2024-10-31 22:00:53,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2024-10-31 22:00:53,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2024-10-31 22:00:53,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 78 remaining) [2024-10-31 22:00:53,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2024-10-31 22:00:53,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (68 of 78 remaining) [2024-10-31 22:00:53,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2024-10-31 22:00:53,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2024-10-31 22:00:53,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2024-10-31 22:00:53,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2024-10-31 22:00:53,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (63 of 78 remaining) [2024-10-31 22:00:53,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2024-10-31 22:00:53,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2024-10-31 22:00:53,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2024-10-31 22:00:53,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2024-10-31 22:00:53,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2024-10-31 22:00:53,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2024-10-31 22:00:53,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2024-10-31 22:00:53,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2024-10-31 22:00:53,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2024-10-31 22:00:53,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2024-10-31 22:00:53,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2024-10-31 22:00:53,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2024-10-31 22:00:53,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2024-10-31 22:00:53,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2024-10-31 22:00:53,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 78 remaining) [2024-10-31 22:00:53,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2024-10-31 22:00:53,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2024-10-31 22:00:53,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2024-10-31 22:00:53,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2024-10-31 22:00:53,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2024-10-31 22:00:53,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2024-10-31 22:00:53,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2024-10-31 22:00:53,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2024-10-31 22:00:53,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2024-10-31 22:00:53,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 78 remaining) [2024-10-31 22:00:53,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2024-10-31 22:00:53,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2024-10-31 22:00:53,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2024-10-31 22:00:53,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2024-10-31 22:00:53,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2024-10-31 22:00:53,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2024-10-31 22:00:53,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 78 remaining) [2024-10-31 22:00:53,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2024-10-31 22:00:53,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (29 of 78 remaining) [2024-10-31 22:00:53,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2024-10-31 22:00:53,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2024-10-31 22:00:53,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2024-10-31 22:00:53,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2024-10-31 22:00:53,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (24 of 78 remaining) [2024-10-31 22:00:53,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2024-10-31 22:00:53,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2024-10-31 22:00:53,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2024-10-31 22:00:53,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2024-10-31 22:00:53,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2024-10-31 22:00:53,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2024-10-31 22:00:53,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2024-10-31 22:00:53,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2024-10-31 22:00:53,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2024-10-31 22:00:53,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2024-10-31 22:00:53,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2024-10-31 22:00:53,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2024-10-31 22:00:53,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2024-10-31 22:00:53,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2024-10-31 22:00:53,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2024-10-31 22:00:53,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2024-10-31 22:00:53,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2024-10-31 22:00:53,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2024-10-31 22:00:53,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2024-10-31 22:00:53,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2024-10-31 22:00:53,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2024-10-31 22:00:53,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2024-10-31 22:00:53,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2024-10-31 22:00:53,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2024-10-31 22:00:53,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:00:53,202 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:00:53,205 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:00:53,205 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:00:53,386 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:00:53,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 139 transitions, 288 flow [2024-10-31 22:00:53,430 INFO L124 PetriNetUnfolderBase]: 16/148 cut-off events. [2024-10-31 22:00:53,431 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:00:53,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 148 events. 16/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 928 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2024-10-31 22:00:53,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 139 transitions, 288 flow [2024-10-31 22:00:53,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 139 transitions, 288 flow [2024-10-31 22:00:53,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:53,440 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3c618be8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:53,440 INFO L334 AbstractCegarLoop]: Starting to check reachability of 116 error locations. [2024-10-31 22:00:53,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:00:53,442 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:00:53,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:53,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:53,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:00:53,443 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:00:53,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash 702524, now seen corresponding path program 1 times [2024-10-31 22:00:53,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:53,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187004724] [2024-10-31 22:00:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:53,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:53,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187004724] [2024-10-31 22:00:53,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187004724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:53,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:53,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:53,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478344342] [2024-10-31 22:00:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:53,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:00:53,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:00:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:00:53,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-31 22:00:53,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 139 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:53,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:53,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-31 22:00:53,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:57,516 INFO L124 PetriNetUnfolderBase]: 13120/20920 cut-off events. [2024-10-31 22:00:57,516 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-31 22:00:57,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41248 conditions, 20920 events. 13120/20920 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 151700 event pairs, 11374 based on Foata normal form. 0/9844 useless extension candidates. Maximal degree in co-relation 19800. Up to 20179 conditions per place. [2024-10-31 22:00:57,785 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 111 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2024-10-31 22:00:57,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 480 flow [2024-10-31 22:00:57,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:00:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:00:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 152 transitions. [2024-10-31 22:00:57,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5467625899280576 [2024-10-31 22:00:57,788 INFO L175 Difference]: Start difference. First operand has 128 places, 139 transitions, 288 flow. Second operand 2 states and 152 transitions. [2024-10-31 22:00:57,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 480 flow [2024-10-31 22:00:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:00:57,796 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 258 flow [2024-10-31 22:00:57,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-10-31 22:00:57,798 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2024-10-31 22:00:57,799 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 258 flow [2024-10-31 22:00:57,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:57,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:57,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:00:57,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:00:57,800 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:00:57,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:57,801 INFO L85 PathProgramCache]: Analyzing trace with hash -540035439, now seen corresponding path program 1 times [2024-10-31 22:00:57,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:57,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592044661] [2024-10-31 22:00:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:58,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592044661] [2024-10-31 22:00:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592044661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:58,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:58,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032401956] [2024-10-31 22:00:58,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:58,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:00:58,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:58,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:00:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:00:58,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-31 22:00:58,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:58,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:58,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-31 22:00:58,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:01,761 INFO L124 PetriNetUnfolderBase]: 11770/18940 cut-off events. [2024-10-31 22:01:01,761 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-31 22:01:01,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37271 conditions, 18940 events. 11770/18940 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 139106 event pairs, 7200 based on Foata normal form. 0/9874 useless extension candidates. Maximal degree in co-relation 37266. Up to 12245 conditions per place. [2024-10-31 22:01:01,910 INFO L140 encePairwiseOnDemand]: 80/139 looper letters, 237 selfloop transitions, 55 changer transitions 0/305 dead transitions. [2024-10-31 22:01:01,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 305 transitions, 1209 flow [2024-10-31 22:01:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:01,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2024-10-31 22:01:01,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6690647482014388 [2024-10-31 22:01:01,926 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 258 flow. Second operand 4 states and 372 transitions. [2024-10-31 22:01:01,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 305 transitions, 1209 flow [2024-10-31 22:01:01,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 305 transitions, 1209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:01,948 INFO L231 Difference]: Finished difference. Result has 124 places, 178 transitions, 726 flow [2024-10-31 22:01:01,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=726, PETRI_PLACES=124, PETRI_TRANSITIONS=178} [2024-10-31 22:01:01,952 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2024-10-31 22:01:01,953 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 178 transitions, 726 flow [2024-10-31 22:01:01,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:01,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:01,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:01:01,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:01:01,955 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:01:01,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:01,956 INFO L85 PathProgramCache]: Analyzing trace with hash -540035438, now seen corresponding path program 1 times [2024-10-31 22:01:01,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:01,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388827292] [2024-10-31 22:01:01,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:01,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:02,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:02,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388827292] [2024-10-31 22:01:02,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388827292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784042506] [2024-10-31 22:01:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:02,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:02,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:02,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-31 22:01:02,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 178 transitions, 726 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:02,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:02,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-31 22:01:02,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:05,119 INFO L124 PetriNetUnfolderBase]: 9028/14560 cut-off events. [2024-10-31 22:01:05,119 INFO L125 PetriNetUnfolderBase]: For 2040/2040 co-relation queries the response was YES. [2024-10-31 22:01:05,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35779 conditions, 14560 events. 9028/14560 cut-off events. For 2040/2040 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 103518 event pairs, 5478 based on Foata normal form. 972/10192 useless extension candidates. Maximal degree in co-relation 35771. Up to 8777 conditions per place. [2024-10-31 22:01:05,216 INFO L140 encePairwiseOnDemand]: 118/139 looper letters, 215 selfloop transitions, 9 changer transitions 0/237 dead transitions. [2024-10-31 22:01:05,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 237 transitions, 1373 flow [2024-10-31 22:01:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-10-31 22:01:05,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46402877697841727 [2024-10-31 22:01:05,219 INFO L175 Difference]: Start difference. First operand has 124 places, 178 transitions, 726 flow. Second operand 4 states and 258 transitions. [2024-10-31 22:01:05,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 237 transitions, 1373 flow [2024-10-31 22:01:05,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 237 transitions, 1373 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:05,242 INFO L231 Difference]: Finished difference. Result has 115 places, 166 transitions, 720 flow [2024-10-31 22:01:05,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=720, PETRI_PLACES=115, PETRI_TRANSITIONS=166} [2024-10-31 22:01:05,243 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -13 predicate places. [2024-10-31 22:01:05,243 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 166 transitions, 720 flow [2024-10-31 22:01:05,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:05,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:05,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:05,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:01:05,245 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:01:05,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash 717013728, now seen corresponding path program 1 times [2024-10-31 22:01:05,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302991328] [2024-10-31 22:01:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:05,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:05,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302991328] [2024-10-31 22:01:05,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302991328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:05,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:05,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:05,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444636771] [2024-10-31 22:01:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:05,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:05,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 139 [2024-10-31 22:01:05,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 166 transitions, 720 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:05,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:05,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 139 [2024-10-31 22:01:05,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:07,348 INFO L124 PetriNetUnfolderBase]: 9167/14624 cut-off events. [2024-10-31 22:01:07,349 INFO L125 PetriNetUnfolderBase]: For 3471/3471 co-relation queries the response was YES. [2024-10-31 22:01:07,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36755 conditions, 14624 events. 9167/14624 cut-off events. For 3471/3471 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 103663 event pairs, 4372 based on Foata normal form. 0/9656 useless extension candidates. Maximal degree in co-relation 36746. Up to 9574 conditions per place. [2024-10-31 22:01:07,452 INFO L140 encePairwiseOnDemand]: 127/139 looper letters, 204 selfloop transitions, 13 changer transitions 0/228 dead transitions. [2024-10-31 22:01:07,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 228 transitions, 1377 flow [2024-10-31 22:01:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-10-31 22:01:07,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4844124700239808 [2024-10-31 22:01:07,454 INFO L175 Difference]: Start difference. First operand has 115 places, 166 transitions, 720 flow. Second operand 3 states and 202 transitions. [2024-10-31 22:01:07,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 228 transitions, 1377 flow [2024-10-31 22:01:07,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 228 transitions, 1363 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:07,483 INFO L231 Difference]: Finished difference. Result has 117 places, 174 transitions, 828 flow [2024-10-31 22:01:07,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=828, PETRI_PLACES=117, PETRI_TRANSITIONS=174} [2024-10-31 22:01:07,485 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -11 predicate places. [2024-10-31 22:01:07,486 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 174 transitions, 828 flow [2024-10-31 22:01:07,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:07,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:07,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:07,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:01:07,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:01:07,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash 717013729, now seen corresponding path program 1 times [2024-10-31 22:01:07,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:07,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085600435] [2024-10-31 22:01:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:07,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:07,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085600435] [2024-10-31 22:01:07,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085600435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:07,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:07,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:07,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085148216] [2024-10-31 22:01:07,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:07,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:07,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:07,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:07,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-31 22:01:07,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 174 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:07,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:07,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-31 22:01:07,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:11,549 INFO L124 PetriNetUnfolderBase]: 13846/22057 cut-off events. [2024-10-31 22:01:11,549 INFO L125 PetriNetUnfolderBase]: For 7393/7393 co-relation queries the response was YES. [2024-10-31 22:01:11,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58059 conditions, 22057 events. 13846/22057 cut-off events. For 7393/7393 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 160990 event pairs, 3985 based on Foata normal form. 207/15067 useless extension candidates. Maximal degree in co-relation 58049. Up to 14223 conditions per place. [2024-10-31 22:01:11,708 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 384 selfloop transitions, 35 changer transitions 0/433 dead transitions. [2024-10-31 22:01:11,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 433 transitions, 2903 flow [2024-10-31 22:01:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:01:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:01:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2024-10-31 22:01:11,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.479136690647482 [2024-10-31 22:01:11,711 INFO L175 Difference]: Start difference. First operand has 117 places, 174 transitions, 828 flow. Second operand 5 states and 333 transitions. [2024-10-31 22:01:11,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 433 transitions, 2903 flow [2024-10-31 22:01:11,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 433 transitions, 2849 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:11,809 INFO L231 Difference]: Finished difference. Result has 122 places, 208 transitions, 1156 flow [2024-10-31 22:01:11,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1156, PETRI_PLACES=122, PETRI_TRANSITIONS=208} [2024-10-31 22:01:11,810 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2024-10-31 22:01:11,810 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 208 transitions, 1156 flow [2024-10-31 22:01:11,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:11,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:11,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:11,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:01:11,812 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:01:11,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash 717047594, now seen corresponding path program 1 times [2024-10-31 22:01:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452336535] [2024-10-31 22:01:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:11,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:11,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452336535] [2024-10-31 22:01:11,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452336535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:11,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:11,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:11,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198422359] [2024-10-31 22:01:11,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:11,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:11,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2024-10-31 22:01:11,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 208 transitions, 1156 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:11,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:11,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2024-10-31 22:01:11,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:14,959 INFO L124 PetriNetUnfolderBase]: 14169/22594 cut-off events. [2024-10-31 22:01:14,960 INFO L125 PetriNetUnfolderBase]: For 8841/8841 co-relation queries the response was YES. [2024-10-31 22:01:15,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63606 conditions, 22594 events. 14169/22594 cut-off events. For 8841/8841 co-relation queries the response was YES. Maximal size of possible extension queue 1193. Compared 167917 event pairs, 4168 based on Foata normal form. 0/16495 useless extension candidates. Maximal degree in co-relation 63593. Up to 8220 conditions per place. [2024-10-31 22:01:15,132 INFO L140 encePairwiseOnDemand]: 125/139 looper letters, 335 selfloop transitions, 26 changer transitions 0/374 dead transitions. [2024-10-31 22:01:15,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 374 transitions, 2713 flow [2024-10-31 22:01:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2024-10-31 22:01:15,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5017985611510791 [2024-10-31 22:01:15,134 INFO L175 Difference]: Start difference. First operand has 122 places, 208 transitions, 1156 flow. Second operand 4 states and 279 transitions. [2024-10-31 22:01:15,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 374 transitions, 2713 flow [2024-10-31 22:01:15,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 374 transitions, 2713 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:15,242 INFO L231 Difference]: Finished difference. Result has 127 places, 221 transitions, 1347 flow [2024-10-31 22:01:15,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1347, PETRI_PLACES=127, PETRI_TRANSITIONS=221} [2024-10-31 22:01:15,243 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2024-10-31 22:01:15,243 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 221 transitions, 1347 flow [2024-10-31 22:01:15,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:15,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:15,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:15,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:01:15,244 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:01:15,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 717047598, now seen corresponding path program 1 times [2024-10-31 22:01:15,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:15,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409265504] [2024-10-31 22:01:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:15,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:15,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409265504] [2024-10-31 22:01:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409265504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:15,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:15,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470802343] [2024-10-31 22:01:15,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:15,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:15,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 139 [2024-10-31 22:01:15,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 221 transitions, 1347 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:15,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:15,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 139 [2024-10-31 22:01:15,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:18,674 INFO L124 PetriNetUnfolderBase]: 14222/22566 cut-off events. [2024-10-31 22:01:18,674 INFO L125 PetriNetUnfolderBase]: For 13594/13594 co-relation queries the response was YES. [2024-10-31 22:01:18,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66425 conditions, 22566 events. 14222/22566 cut-off events. For 13594/13594 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 165889 event pairs, 6156 based on Foata normal form. 0/17034 useless extension candidates. Maximal degree in co-relation 66409. Up to 14436 conditions per place. [2024-10-31 22:01:18,868 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 256 selfloop transitions, 18 changer transitions 0/286 dead transitions. [2024-10-31 22:01:18,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 286 transitions, 2170 flow [2024-10-31 22:01:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2024-10-31 22:01:18,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48201438848920863 [2024-10-31 22:01:18,870 INFO L175 Difference]: Start difference. First operand has 127 places, 221 transitions, 1347 flow. Second operand 3 states and 201 transitions. [2024-10-31 22:01:18,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 286 transitions, 2170 flow [2024-10-31 22:01:19,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 286 transitions, 2139 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:19,054 INFO L231 Difference]: Finished difference. Result has 130 places, 227 transitions, 1437 flow [2024-10-31 22:01:19,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1437, PETRI_PLACES=130, PETRI_TRANSITIONS=227} [2024-10-31 22:01:19,055 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 2 predicate places. [2024-10-31 22:01:19,056 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 227 transitions, 1437 flow [2024-10-31 22:01:19,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:19,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:19,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:19,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:01:19,057 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-31 22:01:19,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash 717047599, now seen corresponding path program 1 times [2024-10-31 22:01:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22881629] [2024-10-31 22:01:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22881629] [2024-10-31 22:01:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22881629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:19,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490404109] [2024-10-31 22:01:19,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:19,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:19,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:19,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2024-10-31 22:01:19,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 227 transitions, 1437 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:19,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:19,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2024-10-31 22:01:19,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand