./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu --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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:40,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:40,813 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:39:40,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:40,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:40,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:40,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:40,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:40,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:40,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:40,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:40,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:40,884 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:40,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:40,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:40,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:40,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:40,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:40,890 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:40,890 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:40,891 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:40,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:40,893 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:40,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:40,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:40,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:40,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:40,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:40,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:40,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:40,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:40,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:40,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:40,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:40,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:40,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:40,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:40,902 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:40,903 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_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2023-11-19 07:39:41,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:41,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:41,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:41,292 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:41,293 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:41,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-19 07:39:44,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:45,159 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:45,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-19 07:39:45,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/data/24efb5b4e/2490e4d618e64597a3043e65c972f5e5/FLAG3fcdbf693 [2023-11-19 07:39:45,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/data/24efb5b4e/2490e4d618e64597a3043e65c972f5e5 [2023-11-19 07:39:45,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:45,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:45,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:45,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:45,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:45,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ade23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45, skipping insertion in model container [2023-11-19 07:39:45,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:45,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:45,771 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:45,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:45,864 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:45,864 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:45,873 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:45,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45 WrapperNode [2023-11-19 07:39:45,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:45,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:45,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:45,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:45,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,946 INFO L138 Inliner]: procedures = 172, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 110 [2023-11-19 07:39:45,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:45,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:45,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:45,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:45,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:45,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:45,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:45,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:45,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (1/1) ... [2023-11-19 07:39:45,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:46,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:46,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:46,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0c4951-aef5-475c-8bef-8875b6c94461/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:39:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:39:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:39:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:46,075 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:39:46,246 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:46,248 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:46,685 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:46,957 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:46,957 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:39:46,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:46 BoogieIcfgContainer [2023-11-19 07:39:46,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:46,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:46,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:46,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:46,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:45" (1/3) ... [2023-11-19 07:39:46,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424858cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:46, skipping insertion in model container [2023-11-19 07:39:46,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:45" (2/3) ... [2023-11-19 07:39:46,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424858cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:46, skipping insertion in model container [2023-11-19 07:39:46,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:46" (3/3) ... [2023-11-19 07:39:46,977 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-11-19 07:39:47,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:47,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 07:39:47,020 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:47,127 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:39:47,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 123 transitions, 250 flow [2023-11-19 07:39:47,251 INFO L124 PetriNetUnfolderBase]: 11/139 cut-off events. [2023-11-19 07:39:47,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:47,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 11/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 320 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 106. Up to 4 conditions per place. [2023-11-19 07:39:47,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 123 transitions, 250 flow [2023-11-19 07:39:47,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 123 transitions, 250 flow [2023-11-19 07:39:47,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:47,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 123 transitions, 250 flow [2023-11-19 07:39:47,296 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 123 transitions, 250 flow [2023-11-19 07:39:47,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 123 transitions, 250 flow [2023-11-19 07:39:47,364 INFO L124 PetriNetUnfolderBase]: 11/139 cut-off events. [2023-11-19 07:39:47,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:47,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 11/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 320 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 106. Up to 4 conditions per place. [2023-11-19 07:39:47,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 3344 [2023-11-19 07:39:51,143 INFO L134 LiptonReduction]: Checked pairs total: 8769 [2023-11-19 07:39:51,143 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-11-19 07:39:51,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:51,170 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66ba6047, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:51,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-19 07:39:51,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:51,173 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:39:51,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:51,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:51,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:39:51,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-19 07:39:51,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash 20173, now seen corresponding path program 1 times [2023-11-19 07:39:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:51,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037595527] [2023-11-19 07:39:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:51,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:51,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:51,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037595527] [2023-11-19 07:39:51,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037595527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:51,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:51,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:51,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678774098] [2023-11-19 07:39:51,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:51,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:51,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 227 [2023-11-19 07:39:51,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:51,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:51,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 227 [2023-11-19 07:39:51,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:51,909 INFO L124 PetriNetUnfolderBase]: 100/250 cut-off events. [2023-11-19 07:39:51,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:51,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 250 events. 100/250 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 999 event pairs, 92 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 467. Up to 230 conditions per place. [2023-11-19 07:39:51,915 INFO L140 encePairwiseOnDemand]: 216/227 looper letters, 36 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-19 07:39:51,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 166 flow [2023-11-19 07:39:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-19 07:39:51,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4522760646108664 [2023-11-19 07:39:51,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-19 07:39:51,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-19 07:39:51,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:51,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-19 07:39:51,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:51,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:51,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:51,960 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 120 flow. Second operand 3 states and 308 transitions. [2023-11-19 07:39:51,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 166 flow [2023-11-19 07:39:51,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:51,967 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 94 flow [2023-11-19 07:39:51,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-19 07:39:51,974 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -11 predicate places. [2023-11-19 07:39:51,975 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 94 flow [2023-11-19 07:39:51,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:51,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:51,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:39:51,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:51,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-19 07:39:51,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:51,978 INFO L85 PathProgramCache]: Analyzing trace with hash 20172, now seen corresponding path program 1 times [2023-11-19 07:39:51,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:51,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855453223] [2023-11-19 07:39:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855453223] [2023-11-19 07:39:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855453223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186556314] [2023-11-19 07:39:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:52,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:52,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:52,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 227 [2023-11-19 07:39:52,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:52,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 227 [2023-11-19 07:39:52,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:52,367 INFO L124 PetriNetUnfolderBase]: 153/406 cut-off events. [2023-11-19 07:39:52,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:52,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 406 events. 153/406 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1620 event pairs, 80 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 769. Up to 195 conditions per place. [2023-11-19 07:39:52,373 INFO L140 encePairwiseOnDemand]: 222/227 looper letters, 67 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-11-19 07:39:52,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 304 flow [2023-11-19 07:39:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-11-19 07:39:52,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46255506607929514 [2023-11-19 07:39:52,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-11-19 07:39:52,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-11-19 07:39:52,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:52,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-11-19 07:39:52,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,385 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 94 flow. Second operand 3 states and 315 transitions. [2023-11-19 07:39:52,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 304 flow [2023-11-19 07:39:52,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:52,389 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 123 flow [2023-11-19 07:39:52,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-11-19 07:39:52,390 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-19 07:39:52,390 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 123 flow [2023-11-19 07:39:52,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:52,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:39:52,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:52,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-19 07:39:52,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1463844290, now seen corresponding path program 1 times [2023-11-19 07:39:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:52,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290229785] [2023-11-19 07:39:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:52,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:39:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:52,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:39:52,450 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:39:52,451 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (61 of 62 remaining) [2023-11-19 07:39:52,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 62 remaining) [2023-11-19 07:39:52,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 62 remaining) [2023-11-19 07:39:52,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 62 remaining) [2023-11-19 07:39:52,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 62 remaining) [2023-11-19 07:39:52,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 62 remaining) [2023-11-19 07:39:52,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 62 remaining) [2023-11-19 07:39:52,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 62 remaining) [2023-11-19 07:39:52,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 62 remaining) [2023-11-19 07:39:52,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (52 of 62 remaining) [2023-11-19 07:39:52,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 62 remaining) [2023-11-19 07:39:52,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 62 remaining) [2023-11-19 07:39:52,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 62 remaining) [2023-11-19 07:39:52,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 62 remaining) [2023-11-19 07:39:52,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (47 of 62 remaining) [2023-11-19 07:39:52,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 62 remaining) [2023-11-19 07:39:52,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 62 remaining) [2023-11-19 07:39:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 62 remaining) [2023-11-19 07:39:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 62 remaining) [2023-11-19 07:39:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 62 remaining) [2023-11-19 07:39:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 62 remaining) [2023-11-19 07:39:52,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 62 remaining) [2023-11-19 07:39:52,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 62 remaining) [2023-11-19 07:39:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 62 remaining) [2023-11-19 07:39:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 62 remaining) [2023-11-19 07:39:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 62 remaining) [2023-11-19 07:39:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 62 remaining) [2023-11-19 07:39:52,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (34 of 62 remaining) [2023-11-19 07:39:52,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 62 remaining) [2023-11-19 07:39:52,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 62 remaining) [2023-11-19 07:39:52,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 62 remaining) [2023-11-19 07:39:52,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 62 remaining) [2023-11-19 07:39:52,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (29 of 62 remaining) [2023-11-19 07:39:52,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 62 remaining) [2023-11-19 07:39:52,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 62 remaining) [2023-11-19 07:39:52,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 62 remaining) [2023-11-19 07:39:52,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 62 remaining) [2023-11-19 07:39:52,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 62 remaining) [2023-11-19 07:39:52,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 62 remaining) [2023-11-19 07:39:52,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 62 remaining) [2023-11-19 07:39:52,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 62 remaining) [2023-11-19 07:39:52,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 62 remaining) [2023-11-19 07:39:52,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 62 remaining) [2023-11-19 07:39:52,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 62 remaining) [2023-11-19 07:39:52,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 62 remaining) [2023-11-19 07:39:52,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 62 remaining) [2023-11-19 07:39:52,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (15 of 62 remaining) [2023-11-19 07:39:52,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 62 remaining) [2023-11-19 07:39:52,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 62 remaining) [2023-11-19 07:39:52,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 62 remaining) [2023-11-19 07:39:52,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 62 remaining) [2023-11-19 07:39:52,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 62 remaining) [2023-11-19 07:39:52,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 62 remaining) [2023-11-19 07:39:52,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 62 remaining) [2023-11-19 07:39:52,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 62 remaining) [2023-11-19 07:39:52,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 62 remaining) [2023-11-19 07:39:52,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 62 remaining) [2023-11-19 07:39:52,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 62 remaining) [2023-11-19 07:39:52,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 62 remaining) [2023-11-19 07:39:52,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (2 of 62 remaining) [2023-11-19 07:39:52,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 62 remaining) [2023-11-19 07:39:52,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 62 remaining) [2023-11-19 07:39:52,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:52,473 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:39:52,476 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:39:52,476 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:39:52,570 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:39:52,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 212 transitions, 434 flow [2023-11-19 07:39:52,629 INFO L124 PetriNetUnfolderBase]: 21/246 cut-off events. [2023-11-19 07:39:52,630 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:39:52,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 246 events. 21/246 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 886 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 194. Up to 6 conditions per place. [2023-11-19 07:39:52,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 212 transitions, 434 flow [2023-11-19 07:39:52,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 212 transitions, 434 flow [2023-11-19 07:39:52,642 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:52,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 212 transitions, 434 flow [2023-11-19 07:39:52,643 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 212 transitions, 434 flow [2023-11-19 07:39:52,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 212 transitions, 434 flow [2023-11-19 07:39:52,711 INFO L124 PetriNetUnfolderBase]: 21/246 cut-off events. [2023-11-19 07:39:52,711 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:39:52,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 246 events. 21/246 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 886 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 194. Up to 6 conditions per place. [2023-11-19 07:39:52,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 22352 [2023-11-19 07:39:56,237 INFO L134 LiptonReduction]: Checked pairs total: 71005 [2023-11-19 07:39:56,238 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-19 07:39:56,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:56,247 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66ba6047, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:56,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-19 07:39:56,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:56,250 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-19 07:39:56,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:56,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:56,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:39:56,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-19 07:39:56,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash 34527, now seen corresponding path program 1 times [2023-11-19 07:39:56,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116890774] [2023-11-19 07:39:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:56,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116890774] [2023-11-19 07:39:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116890774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:56,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:56,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:56,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425174134] [2023-11-19 07:39:56,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:56,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:56,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:56,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 359 [2023-11-19 07:39:56,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 112 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:56,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:56,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 359 [2023-11-19 07:39:56,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:00,302 INFO L124 PetriNetUnfolderBase]: 12170/21789 cut-off events. [2023-11-19 07:40:00,302 INFO L125 PetriNetUnfolderBase]: For 476/476 co-relation queries the response was YES. [2023-11-19 07:40:00,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41137 conditions, 21789 events. 12170/21789 cut-off events. For 476/476 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 190807 event pairs, 5029 based on Foata normal form. 217/9718 useless extension candidates. Maximal degree in co-relation 33242. Up to 10993 conditions per place. [2023-11-19 07:40:00,508 INFO L140 encePairwiseOnDemand]: 342/359 looper letters, 131 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2023-11-19 07:40:00,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 617 flow [2023-11-19 07:40:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-11-19 07:40:00,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283194057567316 [2023-11-19 07:40:00,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-11-19 07:40:00,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-11-19 07:40:00,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:00,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-11-19 07:40:00,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:00,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:00,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:00,522 INFO L175 Difference]: Start difference. First operand has 110 places, 112 transitions, 234 flow. Second operand 3 states and 569 transitions. [2023-11-19 07:40:00,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 617 flow [2023-11-19 07:40:00,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 617 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:00,530 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 250 flow [2023-11-19 07:40:00,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2023-11-19 07:40:00,534 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -8 predicate places. [2023-11-19 07:40:00,534 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 250 flow [2023-11-19 07:40:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:00,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:00,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:00,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:00,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-19 07:40:00,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 34528, now seen corresponding path program 1 times [2023-11-19 07:40:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064263206] [2023-11-19 07:40:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064263206] [2023-11-19 07:40:00,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064263206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:00,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:00,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062837545] [2023-11-19 07:40:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:00,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:00,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 359 [2023-11-19 07:40:00,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:00,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:00,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 359 [2023-11-19 07:40:00,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:03,053 INFO L124 PetriNetUnfolderBase]: 8208/14970 cut-off events. [2023-11-19 07:40:03,055 INFO L125 PetriNetUnfolderBase]: For 5406/5406 co-relation queries the response was YES. [2023-11-19 07:40:03,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33131 conditions, 14970 events. 8208/14970 cut-off events. For 5406/5406 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 126432 event pairs, 6631 based on Foata normal form. 1878/10169 useless extension candidates. Maximal degree in co-relation 27490. Up to 13127 conditions per place. [2023-11-19 07:40:03,217 INFO L140 encePairwiseOnDemand]: 357/359 looper letters, 71 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-11-19 07:40:03,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 392 flow [2023-11-19 07:40:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-19 07:40:03,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735376044568245 [2023-11-19 07:40:03,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-19 07:40:03,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-19 07:40:03,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:03,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-19 07:40:03,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,230 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 250 flow. Second operand 3 states and 510 transitions. [2023-11-19 07:40:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 392 flow [2023-11-19 07:40:03,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:03,252 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 238 flow [2023-11-19 07:40:03,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2023-11-19 07:40:03,255 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -9 predicate places. [2023-11-19 07:40:03,255 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 238 flow [2023-11-19 07:40:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:03,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:03,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:03,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-19 07:40:03,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1552688133, now seen corresponding path program 1 times [2023-11-19 07:40:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:03,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509160094] [2023-11-19 07:40:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:03,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:03,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:03,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509160094] [2023-11-19 07:40:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509160094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:03,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210417121] [2023-11-19 07:40:03,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:03,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:03,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:03,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 359 [2023-11-19 07:40:03,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:03,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 359 [2023-11-19 07:40:03,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:06,625 INFO L124 PetriNetUnfolderBase]: 13820/24723 cut-off events. [2023-11-19 07:40:06,625 INFO L125 PetriNetUnfolderBase]: For 3473/3475 co-relation queries the response was YES. [2023-11-19 07:40:06,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53032 conditions, 24723 events. 13820/24723 cut-off events. For 3473/3475 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 224668 event pairs, 3891 based on Foata normal form. 0/11910 useless extension candidates. Maximal degree in co-relation 53022. Up to 11634 conditions per place. [2023-11-19 07:40:06,791 INFO L140 encePairwiseOnDemand]: 342/359 looper letters, 129 selfloop transitions, 14 changer transitions 0/165 dead transitions. [2023-11-19 07:40:06,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 165 transitions, 675 flow [2023-11-19 07:40:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-11-19 07:40:06,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921077065923863 [2023-11-19 07:40:06,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-11-19 07:40:06,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-11-19 07:40:06,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:06,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-11-19 07:40:06,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,801 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 238 flow. Second operand 3 states and 530 transitions. [2023-11-19 07:40:06,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 165 transitions, 675 flow [2023-11-19 07:40:06,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 165 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:06,806 INFO L231 Difference]: Finished difference. Result has 104 places, 114 transitions, 369 flow [2023-11-19 07:40:06,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=104, PETRI_TRANSITIONS=114} [2023-11-19 07:40:06,807 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -6 predicate places. [2023-11-19 07:40:06,808 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 114 transitions, 369 flow [2023-11-19 07:40:06,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:06,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:06,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:06,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-19 07:40:06,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1552688134, now seen corresponding path program 1 times [2023-11-19 07:40:06,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746930678] [2023-11-19 07:40:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:06,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:06,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746930678] [2023-11-19 07:40:06,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746930678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:06,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:06,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688506971] [2023-11-19 07:40:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:06,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:06,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:06,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:06,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:07,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 359 [2023-11-19 07:40:07,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 114 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:07,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:07,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 359 [2023-11-19 07:40:07,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:10,576 INFO L124 PetriNetUnfolderBase]: 12904/22675 cut-off events. [2023-11-19 07:40:10,576 INFO L125 PetriNetUnfolderBase]: For 8171/8173 co-relation queries the response was YES. [2023-11-19 07:40:10,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54582 conditions, 22675 events. 12904/22675 cut-off events. For 8171/8173 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 199174 event pairs, 2932 based on Foata normal form. 1460/12988 useless extension candidates. Maximal degree in co-relation 54571. Up to 9974 conditions per place. [2023-11-19 07:40:10,754 INFO L140 encePairwiseOnDemand]: 342/359 looper letters, 160 selfloop transitions, 16 changer transitions 0/194 dead transitions. [2023-11-19 07:40:10,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 194 transitions, 912 flow [2023-11-19 07:40:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 681 transitions. [2023-11-19 07:40:10,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742339832869081 [2023-11-19 07:40:10,762 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 681 transitions. [2023-11-19 07:40:10,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 681 transitions. [2023-11-19 07:40:10,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:10,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 681 transitions. [2023-11-19 07:40:10,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:10,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:10,772 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:10,772 INFO L175 Difference]: Start difference. First operand has 104 places, 114 transitions, 369 flow. Second operand 4 states and 681 transitions. [2023-11-19 07:40:10,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 194 transitions, 912 flow [2023-11-19 07:40:10,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 194 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:10,794 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 361 flow [2023-11-19 07:40:10,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2023-11-19 07:40:10,797 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -11 predicate places. [2023-11-19 07:40:10,797 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 361 flow [2023-11-19 07:40:10,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:10,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:10,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:10,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:10,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err8ASSERT_VIOLATIONARRAY_INDEX === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-19 07:40:10,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1779836119, now seen corresponding path program 1 times [2023-11-19 07:40:10,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:10,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13990836] [2023-11-19 07:40:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:10,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13990836] [2023-11-19 07:40:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13990836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283585252] [2023-11-19 07:40:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:11,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 359 [2023-11-19 07:40:11,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:11,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:11,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 359 [2023-11-19 07:40:11,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:14,160 INFO L124 PetriNetUnfolderBase]: 12902/22417 cut-off events. [2023-11-19 07:40:14,160 INFO L125 PetriNetUnfolderBase]: For 7737/8070 co-relation queries the response was YES. [2023-11-19 07:40:14,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52776 conditions, 22417 events. 12902/22417 cut-off events. For 7737/8070 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 189237 event pairs, 5861 based on Foata normal form. 0/10875 useless extension candidates. Maximal degree in co-relation 52765. Up to 19842 conditions per place. [2023-11-19 07:40:14,306 INFO L140 encePairwiseOnDemand]: 348/359 looper letters, 103 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2023-11-19 07:40:14,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 139 transitions, 671 flow [2023-11-19 07:40:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 681 transitions. [2023-11-19 07:40:14,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742339832869081 [2023-11-19 07:40:14,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 681 transitions. [2023-11-19 07:40:14,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 681 transitions. [2023-11-19 07:40:14,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:14,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 681 transitions. [2023-11-19 07:40:14,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:14,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:14,317 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:14,318 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 361 flow. Second operand 4 states and 681 transitions. [2023-11-19 07:40:14,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 139 transitions, 671 flow [2023-11-19 07:40:14,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:14,330 INFO L231 Difference]: Finished difference. Result has 102 places, 115 transitions, 405 flow [2023-11-19 07:40:14,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=102, PETRI_TRANSITIONS=115} [2023-11-19 07:40:14,332 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -8 predicate places. [2023-11-19 07:40:14,332 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 115 transitions, 405 flow [2023-11-19 07:40:14,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:14,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:14,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:40:14,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:14,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-19 07:40:14,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2015933778, now seen corresponding path program 1 times [2023-11-19 07:40:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:14,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115073389] [2023-11-19 07:40:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:14,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:14,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:14,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:40:14,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (90 of 91 remaining) [2023-11-19 07:40:14,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 91 remaining) [2023-11-19 07:40:14,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 91 remaining) [2023-11-19 07:40:14,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 91 remaining) [2023-11-19 07:40:14,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 91 remaining) [2023-11-19 07:40:14,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 91 remaining) [2023-11-19 07:40:14,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 91 remaining) [2023-11-19 07:40:14,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 91 remaining) [2023-11-19 07:40:14,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 91 remaining) [2023-11-19 07:40:14,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (81 of 91 remaining) [2023-11-19 07:40:14,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 91 remaining) [2023-11-19 07:40:14,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 91 remaining) [2023-11-19 07:40:14,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 91 remaining) [2023-11-19 07:40:14,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 91 remaining) [2023-11-19 07:40:14,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (76 of 91 remaining) [2023-11-19 07:40:14,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 91 remaining) [2023-11-19 07:40:14,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 91 remaining) [2023-11-19 07:40:14,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 91 remaining) [2023-11-19 07:40:14,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 91 remaining) [2023-11-19 07:40:14,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 91 remaining) [2023-11-19 07:40:14,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 91 remaining) [2023-11-19 07:40:14,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 91 remaining) [2023-11-19 07:40:14,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 91 remaining) [2023-11-19 07:40:14,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 91 remaining) [2023-11-19 07:40:14,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 91 remaining) [2023-11-19 07:40:14,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 91 remaining) [2023-11-19 07:40:14,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 91 remaining) [2023-11-19 07:40:14,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (63 of 91 remaining) [2023-11-19 07:40:14,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 91 remaining) [2023-11-19 07:40:14,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 91 remaining) [2023-11-19 07:40:14,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 91 remaining) [2023-11-19 07:40:14,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 91 remaining) [2023-11-19 07:40:14,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (58 of 91 remaining) [2023-11-19 07:40:14,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 91 remaining) [2023-11-19 07:40:14,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 91 remaining) [2023-11-19 07:40:14,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 91 remaining) [2023-11-19 07:40:14,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 91 remaining) [2023-11-19 07:40:14,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 91 remaining) [2023-11-19 07:40:14,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 91 remaining) [2023-11-19 07:40:14,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 91 remaining) [2023-11-19 07:40:14,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 91 remaining) [2023-11-19 07:40:14,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (49 of 91 remaining) [2023-11-19 07:40:14,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 91 remaining) [2023-11-19 07:40:14,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 91 remaining) [2023-11-19 07:40:14,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 91 remaining) [2023-11-19 07:40:14,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 91 remaining) [2023-11-19 07:40:14,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (44 of 91 remaining) [2023-11-19 07:40:14,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 91 remaining) [2023-11-19 07:40:14,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 91 remaining) [2023-11-19 07:40:14,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 91 remaining) [2023-11-19 07:40:14,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 91 remaining) [2023-11-19 07:40:14,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 91 remaining) [2023-11-19 07:40:14,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 91 remaining) [2023-11-19 07:40:14,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 91 remaining) [2023-11-19 07:40:14,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 91 remaining) [2023-11-19 07:40:14,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 91 remaining) [2023-11-19 07:40:14,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 91 remaining) [2023-11-19 07:40:14,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 91 remaining) [2023-11-19 07:40:14,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 91 remaining) [2023-11-19 07:40:14,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (31 of 91 remaining) [2023-11-19 07:40:14,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 91 remaining) [2023-11-19 07:40:14,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 91 remaining) [2023-11-19 07:40:14,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 91 remaining) [2023-11-19 07:40:14,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 91 remaining) [2023-11-19 07:40:14,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 91 remaining) [2023-11-19 07:40:14,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 91 remaining) [2023-11-19 07:40:14,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 91 remaining) [2023-11-19 07:40:14,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 91 remaining) [2023-11-19 07:40:14,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 91 remaining) [2023-11-19 07:40:14,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 91 remaining) [2023-11-19 07:40:14,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 91 remaining) [2023-11-19 07:40:14,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 91 remaining) [2023-11-19 07:40:14,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 91 remaining) [2023-11-19 07:40:14,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 91 remaining) [2023-11-19 07:40:14,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 91 remaining) [2023-11-19 07:40:14,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (15 of 91 remaining) [2023-11-19 07:40:14,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 91 remaining) [2023-11-19 07:40:14,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 91 remaining) [2023-11-19 07:40:14,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 91 remaining) [2023-11-19 07:40:14,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 91 remaining) [2023-11-19 07:40:14,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 91 remaining) [2023-11-19 07:40:14,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 91 remaining) [2023-11-19 07:40:14,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 91 remaining) [2023-11-19 07:40:14,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 91 remaining) [2023-11-19 07:40:14,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 91 remaining) [2023-11-19 07:40:14,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 91 remaining) [2023-11-19 07:40:14,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 91 remaining) [2023-11-19 07:40:14,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 91 remaining) [2023-11-19 07:40:14,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (2 of 91 remaining) [2023-11-19 07:40:14,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 91 remaining) [2023-11-19 07:40:14,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 91 remaining) [2023-11-19 07:40:14,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:14,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 07:40:14,394 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:40:14,394 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:40:14,504 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:40:14,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 301 transitions, 620 flow [2023-11-19 07:40:14,595 INFO L124 PetriNetUnfolderBase]: 31/353 cut-off events. [2023-11-19 07:40:14,595 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:40:14,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 353 events. 31/353 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1530 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 282. Up to 8 conditions per place. [2023-11-19 07:40:14,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 301 transitions, 620 flow [2023-11-19 07:40:14,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 301 transitions, 620 flow [2023-11-19 07:40:14,613 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:14,613 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 301 transitions, 620 flow [2023-11-19 07:40:14,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 301 transitions, 620 flow [2023-11-19 07:40:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 301 transitions, 620 flow [2023-11-19 07:40:14,683 INFO L124 PetriNetUnfolderBase]: 31/353 cut-off events. [2023-11-19 07:40:14,683 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:40:14,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 353 events. 31/353 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1530 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 282. Up to 8 conditions per place. [2023-11-19 07:40:14,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 57024 [2023-11-19 07:40:19,110 INFO L134 LiptonReduction]: Checked pairs total: 187538 [2023-11-19 07:40:19,110 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-11-19 07:40:19,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:19,113 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66ba6047, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:19,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 120 error locations. [2023-11-19 07:40:19,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:19,115 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:40:19,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:19,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:19,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:19,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 117 more)] === [2023-11-19 07:40:19,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash 53724, now seen corresponding path program 1 times [2023-11-19 07:40:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019115290] [2023-11-19 07:40:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:19,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019115290] [2023-11-19 07:40:19,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019115290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:19,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:19,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064042714] [2023-11-19 07:40:19,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:19,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:19,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 510 [2023-11-19 07:40:19,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 162 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:19,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:19,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 510 [2023-11-19 07:40:19,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand