./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/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_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/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_ac16ab48-1427-4d99-be4d-0d005a911aed/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 d6003483da8ad7192acf961571797960398ac6b188954f23484dd2dbf22e0c27 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:39,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:40,000 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:56:40,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:40,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:40,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:40,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:40,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:40,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:40,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:40,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:40,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:40,056 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:40,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:40,058 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:40,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:40,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:40,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:40,060 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:56:40,060 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:56:40,061 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:56:40,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:40,062 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:56:40,062 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:40,063 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:40,063 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:40,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:40,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:40,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:40,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:40,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:40,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:40,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:40,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:40,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:40,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:40,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:40,069 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:40,069 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_ac16ab48-1427-4d99-be4d-0d005a911aed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6003483da8ad7192acf961571797960398ac6b188954f23484dd2dbf22e0c27 [2023-11-19 07:56:40,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:40,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:40,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:40,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:40,403 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:40,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2023-11-19 07:56:43,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:44,088 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:44,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/sv-benchmarks/c/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2023-11-19 07:56:44,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/data/091ebb0f3/7f0b6a8109204516b7af17dc1f3976e3/FLAG23350123f [2023-11-19 07:56:44,120 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/data/091ebb0f3/7f0b6a8109204516b7af17dc1f3976e3 [2023-11-19 07:56:44,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:44,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:44,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:44,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:44,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:44,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb5ea3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44, skipping insertion in model container [2023-11-19 07:56:44,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,216 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:44,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:44,786 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:44,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:44,940 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:44,940 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:44,976 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:44,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44 WrapperNode [2023-11-19 07:56:44,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:44,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:44,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:44,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:44,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,096 INFO L138 Inliner]: procedures = 176, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2023-11-19 07:56:45,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:45,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:45,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:45,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:45,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,154 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:45,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:45,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:45,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:45,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:45,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:45,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:45,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac16ab48-1427-4d99-be4d-0d005a911aed/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:56:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:56:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:56:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:56:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:56:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:56:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:56:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:56:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:45,261 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 07:56:45,490 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:45,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:45,974 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:46,371 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:46,371 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:56:46,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:46 BoogieIcfgContainer [2023-11-19 07:56:46,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:46,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:46,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:46,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:46,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:44" (1/3) ... [2023-11-19 07:56:46,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d56958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:46, skipping insertion in model container [2023-11-19 07:56:46,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (2/3) ... [2023-11-19 07:56:46,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d56958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:46, skipping insertion in model container [2023-11-19 07:56:46,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:46" (3/3) ... [2023-11-19 07:56:46,385 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2023-11-19 07:56:46,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:46,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 07:56:46,405 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:46,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:56:46,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 179 transitions, 370 flow [2023-11-19 07:56:46,643 INFO L124 PetriNetUnfolderBase]: 13/176 cut-off events. [2023-11-19 07:56:46,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:46,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 176 events. 13/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 222 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-11-19 07:56:46,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 179 transitions, 370 flow [2023-11-19 07:56:46,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 176 transitions, 361 flow [2023-11-19 07:56:46,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:46,675 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 176 transitions, 361 flow [2023-11-19 07:56:46,678 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 176 transitions, 361 flow [2023-11-19 07:56:46,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 176 transitions, 361 flow [2023-11-19 07:56:46,725 INFO L124 PetriNetUnfolderBase]: 13/176 cut-off events. [2023-11-19 07:56:46,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:46,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 176 events. 13/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 224 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-11-19 07:56:46,733 INFO L119 LiptonReduction]: Number of co-enabled transitions 6752 [2023-11-19 07:56:59,591 INFO L134 LiptonReduction]: Checked pairs total: 22716 [2023-11-19 07:56:59,591 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-11-19 07:56:59,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:59,637 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;@529cdad7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:59,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-19 07:56:59,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:59,640 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:56:59,641 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:59,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:59,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:56:59,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:56:59,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash 898, now seen corresponding path program 1 times [2023-11-19 07:56:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:59,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423546924] [2023-11-19 07:56:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:59,821 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 07:56:59,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:59,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423546924] [2023-11-19 07:56:59,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423546924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:59,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:59,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:56:59,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384299766] [2023-11-19 07:56:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:59,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 345 [2023-11-19 07:56:59,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 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 07:56:59,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:59,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 345 [2023-11-19 07:56:59,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:01,993 INFO L124 PetriNetUnfolderBase]: 7966/11331 cut-off events. [2023-11-19 07:57:01,993 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-19 07:57:02,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22705 conditions, 11331 events. 7966/11331 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 63501 event pairs, 7966 based on Foata normal form. 0/6423 useless extension candidates. Maximal degree in co-relation 22694. Up to 11318 conditions per place. [2023-11-19 07:57:02,115 INFO L140 encePairwiseOnDemand]: 327/345 looper letters, 37 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-11-19 07:57:02,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 163 flow [2023-11-19 07:57:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 321 transitions. [2023-11-19 07:57:02,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652173913043478 [2023-11-19 07:57:02,136 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 321 transitions. [2023-11-19 07:57:02,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 321 transitions. [2023-11-19 07:57:02,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:02,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 321 transitions. [2023-11-19 07:57:02,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 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 07:57:02,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 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 07:57:02,157 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 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 07:57:02,160 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 127 flow. Second operand 2 states and 321 transitions. [2023-11-19 07:57:02,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 163 flow [2023-11-19 07:57:02,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:57:02,179 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 86 flow [2023-11-19 07:57:02,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-19 07:57:02,186 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places. [2023-11-19 07:57:02,187 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 86 flow [2023-11-19 07:57:02,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 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 07:57:02,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:02,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:57:02,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:02,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:02,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:02,189 INFO L85 PathProgramCache]: Analyzing trace with hash 884482, now seen corresponding path program 1 times [2023-11-19 07:57:02,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:02,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833768315] [2023-11-19 07:57:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:02,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:02,609 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 07:57:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:02,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833768315] [2023-11-19 07:57:02,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833768315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:02,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:02,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:02,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986149991] [2023-11-19 07:57:02,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:02,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 345 [2023-11-19 07:57:02,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 07:57:02,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:02,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 345 [2023-11-19 07:57:02,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:03,666 INFO L124 PetriNetUnfolderBase]: 3879/5596 cut-off events. [2023-11-19 07:57:03,667 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:03,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11225 conditions, 5596 events. 3879/5596 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 28797 event pairs, 3879 based on Foata normal form. 0/3772 useless extension candidates. Maximal degree in co-relation 11222. Up to 5584 conditions per place. [2023-11-19 07:57:03,723 INFO L140 encePairwiseOnDemand]: 338/345 looper letters, 30 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-19 07:57:03,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 136 flow [2023-11-19 07:57:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:57:03,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41835748792270533 [2023-11-19 07:57:03,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:57:03,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:57:03,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:03,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:57:03,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 07:57:03,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:03,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:03,740 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 86 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:57:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 136 flow [2023-11-19 07:57:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:03,742 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 76 flow [2023-11-19 07:57:03,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-19 07:57:03,744 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -23 predicate places. [2023-11-19 07:57:03,744 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 76 flow [2023-11-19 07:57:03,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 07:57:03,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:03,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:57:03,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:57:03,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:03,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash 884481, now seen corresponding path program 1 times [2023-11-19 07:57:03,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062172893] [2023-11-19 07:57:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:03,832 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 07:57:03,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:03,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062172893] [2023-11-19 07:57:03,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062172893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:03,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:03,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:03,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963028514] [2023-11-19 07:57:03,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:03,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:03,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:03,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:03,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 345 [2023-11-19 07:57:03,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 07:57:03,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:03,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 345 [2023-11-19 07:57:03,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:04,754 INFO L124 PetriNetUnfolderBase]: 2602/4007 cut-off events. [2023-11-19 07:57:04,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:04,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7961 conditions, 4007 events. 2602/4007 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 22110 event pairs, 1554 based on Foata normal form. 0/3287 useless extension candidates. Maximal degree in co-relation 7957. Up to 2249 conditions per place. [2023-11-19 07:57:04,786 INFO L140 encePairwiseOnDemand]: 331/345 looper letters, 33 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-11-19 07:57:04,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 178 flow [2023-11-19 07:57:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-11-19 07:57:04,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41932367149758454 [2023-11-19 07:57:04,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-11-19 07:57:04,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-11-19 07:57:04,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:04,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-11-19 07:57:04,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 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 07:57:04,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:04,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:04,799 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 76 flow. Second operand 3 states and 434 transitions. [2023-11-19 07:57:04,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 178 flow [2023-11-19 07:57:04,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:04,802 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 135 flow [2023-11-19 07:57:04,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-19 07:57:04,804 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -22 predicate places. [2023-11-19 07:57:04,804 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 135 flow [2023-11-19 07:57:04,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 07:57:04,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:04,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:04,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:57:04,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:04,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:04,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1931966170, now seen corresponding path program 1 times [2023-11-19 07:57:04,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:04,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477161987] [2023-11-19 07:57:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:04,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:05,171 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 07:57:05,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477161987] [2023-11-19 07:57:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477161987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:05,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217381930] [2023-11-19 07:57:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:05,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 345 [2023-11-19 07:57:05,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 07:57:05,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:05,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 345 [2023-11-19 07:57:05,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:05,972 INFO L124 PetriNetUnfolderBase]: 2500/4016 cut-off events. [2023-11-19 07:57:05,972 INFO L125 PetriNetUnfolderBase]: For 821/821 co-relation queries the response was YES. [2023-11-19 07:57:05,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10101 conditions, 4016 events. 2500/4016 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 23747 event pairs, 890 based on Foata normal form. 0/3595 useless extension candidates. Maximal degree in co-relation 10096. Up to 2559 conditions per place. [2023-11-19 07:57:06,016 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 59 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-11-19 07:57:06,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 357 flow [2023-11-19 07:57:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-19 07:57:06,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43381642512077295 [2023-11-19 07:57:06,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-19 07:57:06,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-19 07:57:06,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:06,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-19 07:57:06,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 07:57:06,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:06,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:06,029 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 135 flow. Second operand 3 states and 449 transitions. [2023-11-19 07:57:06,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 357 flow [2023-11-19 07:57:06,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:06,051 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 132 flow [2023-11-19 07:57:06,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-19 07:57:06,053 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -21 predicate places. [2023-11-19 07:57:06,053 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 132 flow [2023-11-19 07:57:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 07:57:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:06,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:06,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:57:06,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:06,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1931966541, now seen corresponding path program 1 times [2023-11-19 07:57:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:06,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980513640] [2023-11-19 07:57:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:06,400 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 07:57:06,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980513640] [2023-11-19 07:57:06,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980513640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:06,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:06,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636007194] [2023-11-19 07:57:06,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:06,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:06,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:06,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:06,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 345 [2023-11-19 07:57:06,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 07:57:06,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:06,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 345 [2023-11-19 07:57:06,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:07,194 INFO L124 PetriNetUnfolderBase]: 2471/3808 cut-off events. [2023-11-19 07:57:07,194 INFO L125 PetriNetUnfolderBase]: For 700/700 co-relation queries the response was YES. [2023-11-19 07:57:07,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9913 conditions, 3808 events. 2471/3808 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21293 event pairs, 479 based on Foata normal form. 0/3308 useless extension candidates. Maximal degree in co-relation 9907. Up to 3305 conditions per place. [2023-11-19 07:57:07,223 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 52 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-19 07:57:07,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 308 flow [2023-11-19 07:57:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-19 07:57:07,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42318840579710143 [2023-11-19 07:57:07,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-19 07:57:07,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-19 07:57:07,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:07,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-19 07:57:07,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 07:57:07,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:07,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:07,234 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 132 flow. Second operand 3 states and 438 transitions. [2023-11-19 07:57:07,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 308 flow [2023-11-19 07:57:07,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:07,238 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 134 flow [2023-11-19 07:57:07,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-19 07:57:07,241 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -20 predicate places. [2023-11-19 07:57:07,241 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 134 flow [2023-11-19 07:57:07,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 07:57:07,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:07,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:07,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:57:07,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:07,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash -55084960, now seen corresponding path program 1 times [2023-11-19 07:57:07,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:07,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637493616] [2023-11-19 07:57:07,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:07,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:07,547 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 07:57:07,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:07,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637493616] [2023-11-19 07:57:07,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637493616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:07,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930991163] [2023-11-19 07:57:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:07,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:07,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:07,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 345 [2023-11-19 07:57:07,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 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 07:57:07,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:07,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 345 [2023-11-19 07:57:07,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:08,338 INFO L124 PetriNetUnfolderBase]: 2389/3701 cut-off events. [2023-11-19 07:57:08,338 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2023-11-19 07:57:08,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9699 conditions, 3701 events. 2389/3701 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 20432 event pairs, 1291 based on Foata normal form. 0/3164 useless extension candidates. Maximal degree in co-relation 9692. Up to 1502 conditions per place. [2023-11-19 07:57:08,374 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 59 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2023-11-19 07:57:08,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 370 flow [2023-11-19 07:57:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2023-11-19 07:57:08,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072463768115942 [2023-11-19 07:57:08,391 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2023-11-19 07:57:08,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2023-11-19 07:57:08,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:08,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2023-11-19 07:57:08,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 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 07:57:08,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:08,400 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:08,401 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 134 flow. Second operand 4 states and 562 transitions. [2023-11-19 07:57:08,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 370 flow [2023-11-19 07:57:08,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:08,405 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 192 flow [2023-11-19 07:57:08,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-19 07:57:08,406 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -18 predicate places. [2023-11-19 07:57:08,406 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 192 flow [2023-11-19 07:57:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 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 07:57:08,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:08,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:08,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:08,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:08,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1568984879, now seen corresponding path program 1 times [2023-11-19 07:57:08,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:08,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806088126] [2023-11-19 07:57:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:09,507 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 07:57:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806088126] [2023-11-19 07:57:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806088126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:09,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:57:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128529041] [2023-11-19 07:57:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:09,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 345 [2023-11-19 07:57:09,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 192 flow. Second operand has 8 states, 8 states have (on average 121.375) internal successors, (971), 8 states have internal predecessors, (971), 0 states have call successors, (0), 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 07:57:09,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:09,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 345 [2023-11-19 07:57:09,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:10,708 INFO L124 PetriNetUnfolderBase]: 2309/3732 cut-off events. [2023-11-19 07:57:10,708 INFO L125 PetriNetUnfolderBase]: For 2179/2179 co-relation queries the response was YES. [2023-11-19 07:57:10,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10431 conditions, 3732 events. 2309/3732 cut-off events. For 2179/2179 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 21874 event pairs, 843 based on Foata normal form. 40/3491 useless extension candidates. Maximal degree in co-relation 10422. Up to 2288 conditions per place. [2023-11-19 07:57:10,750 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 59 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-19 07:57:10,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 379 flow [2023-11-19 07:57:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 532 transitions. [2023-11-19 07:57:10,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855072463768116 [2023-11-19 07:57:10,754 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 532 transitions. [2023-11-19 07:57:10,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 532 transitions. [2023-11-19 07:57:10,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:10,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 532 transitions. [2023-11-19 07:57:10,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 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 07:57:10,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:10,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:10,763 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 192 flow. Second operand 4 states and 532 transitions. [2023-11-19 07:57:10,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 379 flow [2023-11-19 07:57:10,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:10,792 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 189 flow [2023-11-19 07:57:10,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-19 07:57:10,794 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -18 predicate places. [2023-11-19 07:57:10,794 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 189 flow [2023-11-19 07:57:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.375) internal successors, (971), 8 states have internal predecessors, (971), 0 states have call successors, (0), 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 07:57:10,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:10,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:57:10,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:10,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash -238556906, now seen corresponding path program 1 times [2023-11-19 07:57:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449850084] [2023-11-19 07:57:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,001 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 07:57:11,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449850084] [2023-11-19 07:57:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449850084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:11,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:11,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:11,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856063136] [2023-11-19 07:57:11,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:11,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 345 [2023-11-19 07:57:11,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 07:57:11,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:11,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 345 [2023-11-19 07:57:11,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:11,806 INFO L124 PetriNetUnfolderBase]: 2278/3484 cut-off events. [2023-11-19 07:57:11,806 INFO L125 PetriNetUnfolderBase]: For 3707/3707 co-relation queries the response was YES. [2023-11-19 07:57:11,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10104 conditions, 3484 events. 2278/3484 cut-off events. For 3707/3707 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 20534 event pairs, 249 based on Foata normal form. 12/3215 useless extension candidates. Maximal degree in co-relation 10096. Up to 2818 conditions per place. [2023-11-19 07:57:11,848 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 68 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-19 07:57:11,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 484 flow [2023-11-19 07:57:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-19 07:57:11,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251207729468599 [2023-11-19 07:57:11,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-19 07:57:11,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-19 07:57:11,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:11,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-19 07:57:11,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 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 07:57:11,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:11,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 07:57:11,859 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 189 flow. Second operand 3 states and 440 transitions. [2023-11-19 07:57:11,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 484 flow [2023-11-19 07:57:11,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:11,870 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 193 flow [2023-11-19 07:57:11,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-11-19 07:57:11,871 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -17 predicate places. [2023-11-19 07:57:11,871 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 193 flow [2023-11-19 07:57:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 07:57:11,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:11,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:11,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:57:11,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:11,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1194668638, now seen corresponding path program 1 times [2023-11-19 07:57:11,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:11,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794499832] [2023-11-19 07:57:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:12,111 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 07:57:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794499832] [2023-11-19 07:57:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794499832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:12,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475065900] [2023-11-19 07:57:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:12,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 345 [2023-11-19 07:57:12,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 07:57:12,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:12,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 345 [2023-11-19 07:57:12,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:13,002 INFO L124 PetriNetUnfolderBase]: 3895/5921 cut-off events. [2023-11-19 07:57:13,002 INFO L125 PetriNetUnfolderBase]: For 4427/4427 co-relation queries the response was YES. [2023-11-19 07:57:13,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17487 conditions, 5921 events. 3895/5921 cut-off events. For 4427/4427 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 34389 event pairs, 1127 based on Foata normal form. 48/5486 useless extension candidates. Maximal degree in co-relation 17478. Up to 2212 conditions per place. [2023-11-19 07:57:13,048 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 87 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-11-19 07:57:13,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 92 transitions, 588 flow [2023-11-19 07:57:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 586 transitions. [2023-11-19 07:57:13,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246376811594203 [2023-11-19 07:57:13,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 586 transitions. [2023-11-19 07:57:13,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 586 transitions. [2023-11-19 07:57:13,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:13,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 586 transitions. [2023-11-19 07:57:13,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 0 states have call successors, (0), 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 07:57:13,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:13,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:13,060 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 193 flow. Second operand 4 states and 586 transitions. [2023-11-19 07:57:13,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 92 transitions, 588 flow [2023-11-19 07:57:13,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:13,086 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 208 flow [2023-11-19 07:57:13,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-19 07:57:13,087 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -14 predicate places. [2023-11-19 07:57:13,087 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 208 flow [2023-11-19 07:57:13,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 07:57:13,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:57:13,088 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:13,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1193970639, now seen corresponding path program 1 times [2023-11-19 07:57:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732994404] [2023-11-19 07:57:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,292 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 07:57:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732994404] [2023-11-19 07:57:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732994404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:13,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590516547] [2023-11-19 07:57:13,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:13,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 345 [2023-11-19 07:57:13,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 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 07:57:13,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:13,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 345 [2023-11-19 07:57:13,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:14,035 INFO L124 PetriNetUnfolderBase]: 2917/4531 cut-off events. [2023-11-19 07:57:14,036 INFO L125 PetriNetUnfolderBase]: For 2383/2395 co-relation queries the response was YES. [2023-11-19 07:57:14,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 4531 events. 2917/4531 cut-off events. For 2383/2395 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 25321 event pairs, 1058 based on Foata normal form. 68/4218 useless extension candidates. Maximal degree in co-relation 13812. Up to 1799 conditions per place. [2023-11-19 07:57:14,080 INFO L140 encePairwiseOnDemand]: 333/345 looper letters, 47 selfloop transitions, 15 changer transitions 0/65 dead transitions. [2023-11-19 07:57:14,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 65 transitions, 426 flow [2023-11-19 07:57:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 547 transitions. [2023-11-19 07:57:14,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963768115942029 [2023-11-19 07:57:14,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 547 transitions. [2023-11-19 07:57:14,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 547 transitions. [2023-11-19 07:57:14,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:14,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 547 transitions. [2023-11-19 07:57:14,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 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 07:57:14,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:14,091 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:14,091 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 208 flow. Second operand 4 states and 547 transitions. [2023-11-19 07:57:14,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 65 transitions, 426 flow [2023-11-19 07:57:14,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:14,117 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 314 flow [2023-11-19 07:57:14,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-19 07:57:14,118 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -11 predicate places. [2023-11-19 07:57:14,118 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 314 flow [2023-11-19 07:57:14,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 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 07:57:14,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:14,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:57:14,119 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:14,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1641614719, now seen corresponding path program 1 times [2023-11-19 07:57:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637512912] [2023-11-19 07:57:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,387 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 07:57:14,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637512912] [2023-11-19 07:57:14,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637512912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:14,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555976962] [2023-11-19 07:57:14,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:57:14,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:57:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:14,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 345 [2023-11-19 07:57:14,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 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 07:57:14,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:14,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 345 [2023-11-19 07:57:14,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:15,165 INFO L124 PetriNetUnfolderBase]: 2493/3953 cut-off events. [2023-11-19 07:57:15,165 INFO L125 PetriNetUnfolderBase]: For 4325/4337 co-relation queries the response was YES. [2023-11-19 07:57:15,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13231 conditions, 3953 events. 2493/3953 cut-off events. For 4325/4337 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 22300 event pairs, 775 based on Foata normal form. 68/3802 useless extension candidates. Maximal degree in co-relation 13219. Up to 1222 conditions per place. [2023-11-19 07:57:15,199 INFO L140 encePairwiseOnDemand]: 332/345 looper letters, 61 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2023-11-19 07:57:15,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 629 flow [2023-11-19 07:57:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:57:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 792 transitions. [2023-11-19 07:57:15,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826086956521739 [2023-11-19 07:57:15,204 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 792 transitions. [2023-11-19 07:57:15,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 792 transitions. [2023-11-19 07:57:15,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:15,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 792 transitions. [2023-11-19 07:57:15,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 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 07:57:15,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 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 07:57:15,213 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 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 07:57:15,214 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 314 flow. Second operand 6 states and 792 transitions. [2023-11-19 07:57:15,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 629 flow [2023-11-19 07:57:15,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:15,240 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 446 flow [2023-11-19 07:57:15,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2023-11-19 07:57:15,241 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -5 predicate places. [2023-11-19 07:57:15,241 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 446 flow [2023-11-19 07:57:15,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 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 07:57:15,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:15,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:15,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:57:15,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:15,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,243 INFO L85 PathProgramCache]: Analyzing trace with hash 649552702, now seen corresponding path program 1 times [2023-11-19 07:57:15,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606667911] [2023-11-19 07:57:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,845 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 07:57:15,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606667911] [2023-11-19 07:57:15,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606667911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:57:15,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504679665] [2023-11-19 07:57:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:15,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:16,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 345 [2023-11-19 07:57:16,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 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 07:57:16,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:16,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 345 [2023-11-19 07:57:16,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:17,473 INFO L124 PetriNetUnfolderBase]: 3568/5579 cut-off events. [2023-11-19 07:57:17,473 INFO L125 PetriNetUnfolderBase]: For 9897/9917 co-relation queries the response was YES. [2023-11-19 07:57:17,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20154 conditions, 5579 events. 3568/5579 cut-off events. For 9897/9917 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 32973 event pairs, 1284 based on Foata normal form. 20/5427 useless extension candidates. Maximal degree in co-relation 20140. Up to 3287 conditions per place. [2023-11-19 07:57:17,508 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 104 selfloop transitions, 17 changer transitions 2/125 dead transitions. [2023-11-19 07:57:17,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 125 transitions, 1113 flow [2023-11-19 07:57:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:57:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1009 transitions. [2023-11-19 07:57:17,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655797101449275 [2023-11-19 07:57:17,514 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1009 transitions. [2023-11-19 07:57:17,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1009 transitions. [2023-11-19 07:57:17,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:17,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1009 transitions. [2023-11-19 07:57:17,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.125) internal successors, (1009), 8 states have internal predecessors, (1009), 0 states have call successors, (0), 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 07:57:17,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 345.0) internal successors, (3105), 9 states have internal predecessors, (3105), 0 states have call successors, (0), 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 07:57:17,527 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 345.0) internal successors, (3105), 9 states have internal predecessors, (3105), 0 states have call successors, (0), 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 07:57:17,527 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 446 flow. Second operand 8 states and 1009 transitions. [2023-11-19 07:57:17,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 125 transitions, 1113 flow [2023-11-19 07:57:17,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 125 transitions, 1072 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:17,610 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 636 flow [2023-11-19 07:57:17,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-11-19 07:57:17,611 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-11-19 07:57:17,611 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 636 flow [2023-11-19 07:57:17,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 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 07:57:17,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:17,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:17,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:57:17,613 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1846147412, now seen corresponding path program 1 times [2023-11-19 07:57:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:17,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464207059] [2023-11-19 07:57:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,861 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 07:57:17,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:17,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464207059] [2023-11-19 07:57:17,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464207059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:17,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:17,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825759915] [2023-11-19 07:57:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:17,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:17,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 345 [2023-11-19 07:57:17,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 07:57:17,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:17,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 345 [2023-11-19 07:57:17,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:19,295 INFO L124 PetriNetUnfolderBase]: 4984/7854 cut-off events. [2023-11-19 07:57:19,295 INFO L125 PetriNetUnfolderBase]: For 25691/25731 co-relation queries the response was YES. [2023-11-19 07:57:19,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30192 conditions, 7854 events. 4984/7854 cut-off events. For 25691/25731 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 51997 event pairs, 757 based on Foata normal form. 88/7671 useless extension candidates. Maximal degree in co-relation 30173. Up to 3344 conditions per place. [2023-11-19 07:57:19,351 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 158 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2023-11-19 07:57:19,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 164 transitions, 1957 flow [2023-11-19 07:57:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 581 transitions. [2023-11-19 07:57:19,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4210144927536232 [2023-11-19 07:57:19,357 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 581 transitions. [2023-11-19 07:57:19,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 581 transitions. [2023-11-19 07:57:19,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:19,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 581 transitions. [2023-11-19 07:57:19,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.25) internal successors, (581), 4 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 07:57:19,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:19,365 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:19,365 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 636 flow. Second operand 4 states and 581 transitions. [2023-11-19 07:57:19,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 164 transitions, 1957 flow [2023-11-19 07:57:19,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 164 transitions, 1955 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:19,523 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 653 flow [2023-11-19 07:57:19,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=653, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2023-11-19 07:57:19,524 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2023-11-19 07:57:19,525 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 653 flow [2023-11-19 07:57:19,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 07:57:19,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:19,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:19,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:57:19,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:19,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash -124550624, now seen corresponding path program 1 times [2023-11-19 07:57:19,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:19,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407300746] [2023-11-19 07:57:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:19,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:20,134 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 07:57:20,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407300746] [2023-11-19 07:57:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407300746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:20,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:20,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:57:20,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838540374] [2023-11-19 07:57:20,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:20,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:20,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:20,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:20,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 345 [2023-11-19 07:57:20,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 117.875) internal successors, (943), 8 states have internal predecessors, (943), 0 states have call successors, (0), 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 07:57:20,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:20,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 345 [2023-11-19 07:57:20,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:21,761 INFO L124 PetriNetUnfolderBase]: 4430/6953 cut-off events. [2023-11-19 07:57:21,762 INFO L125 PetriNetUnfolderBase]: For 16673/16689 co-relation queries the response was YES. [2023-11-19 07:57:21,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27630 conditions, 6953 events. 4430/6953 cut-off events. For 16673/16689 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 42665 event pairs, 1266 based on Foata normal form. 16/6935 useless extension candidates. Maximal degree in co-relation 27608. Up to 2918 conditions per place. [2023-11-19 07:57:21,810 INFO L140 encePairwiseOnDemand]: 338/345 looper letters, 73 selfloop transitions, 22 changer transitions 6/103 dead transitions. [2023-11-19 07:57:21,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 990 flow [2023-11-19 07:57:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 874 transitions. [2023-11-19 07:57:21,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2023-11-19 07:57:21,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 874 transitions. [2023-11-19 07:57:21,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 874 transitions. [2023-11-19 07:57:21,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:21,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 874 transitions. [2023-11-19 07:57:21,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.85714285714286) internal successors, (874), 7 states have internal predecessors, (874), 0 states have call successors, (0), 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 07:57:21,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 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 07:57:21,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 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 07:57:21,824 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 653 flow. Second operand 7 states and 874 transitions. [2023-11-19 07:57:21,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 990 flow [2023-11-19 07:57:22,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 966 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:57:22,059 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 589 flow [2023-11-19 07:57:22,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=589, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-11-19 07:57:22,061 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-11-19 07:57:22,062 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 589 flow [2023-11-19 07:57:22,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.875) internal successors, (943), 8 states have internal predecessors, (943), 0 states have call successors, (0), 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 07:57:22,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:22,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:22,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:57:22,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:22,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash 649554414, now seen corresponding path program 1 times [2023-11-19 07:57:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729269656] [2023-11-19 07:57:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729269656] [2023-11-19 07:57:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729269656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:22,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:22,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983898461] [2023-11-19 07:57:22,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:22,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 345 [2023-11-19 07:57:22,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 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 07:57:22,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:22,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 345 [2023-11-19 07:57:22,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:23,290 INFO L124 PetriNetUnfolderBase]: 4103/6457 cut-off events. [2023-11-19 07:57:23,291 INFO L125 PetriNetUnfolderBase]: For 21040/21056 co-relation queries the response was YES. [2023-11-19 07:57:23,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25940 conditions, 6457 events. 4103/6457 cut-off events. For 21040/21056 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 39602 event pairs, 2526 based on Foata normal form. 100/6556 useless extension candidates. Maximal degree in co-relation 25919. Up to 4948 conditions per place. [2023-11-19 07:57:23,330 INFO L140 encePairwiseOnDemand]: 334/345 looper letters, 19 selfloop transitions, 1 changer transitions 43/66 dead transitions. [2023-11-19 07:57:23,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 720 flow [2023-11-19 07:57:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2023-11-19 07:57:23,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39202898550724635 [2023-11-19 07:57:23,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 541 transitions. [2023-11-19 07:57:23,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 541 transitions. [2023-11-19 07:57:23,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:23,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 541 transitions. [2023-11-19 07:57:23,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 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 07:57:23,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:23,344 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 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 07:57:23,344 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 589 flow. Second operand 4 states and 541 transitions. [2023-11-19 07:57:23,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 720 flow [2023-11-19 07:57:23,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 638 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-19 07:57:23,522 INFO L231 Difference]: Finished difference. Result has 66 places, 23 transitions, 111 flow [2023-11-19 07:57:23,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=66, PETRI_TRANSITIONS=23} [2023-11-19 07:57:23,523 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2023-11-19 07:57:23,523 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 23 transitions, 111 flow [2023-11-19 07:57:23,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 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 07:57:23,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:23,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:23,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:57:23,524 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:23,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash 449985066, now seen corresponding path program 1 times [2023-11-19 07:57:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:23,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261812725] [2023-11-19 07:57:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:25,163 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 07:57:25,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:25,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261812725] [2023-11-19 07:57:25,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261812725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:25,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:25,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:57:25,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63782312] [2023-11-19 07:57:25,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:25,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 345 [2023-11-19 07:57:25,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 23 transitions, 111 flow. Second operand has 8 states, 8 states have (on average 118.875) internal successors, (951), 8 states have internal predecessors, (951), 0 states have call successors, (0), 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 07:57:25,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:25,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 345 [2023-11-19 07:57:25,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:25,876 INFO L124 PetriNetUnfolderBase]: 456/786 cut-off events. [2023-11-19 07:57:25,876 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2023-11-19 07:57:25,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 786 events. 456/786 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3256 event pairs, 242 based on Foata normal form. 8/794 useless extension candidates. Maximal degree in co-relation 2205. Up to 547 conditions per place. [2023-11-19 07:57:25,880 INFO L140 encePairwiseOnDemand]: 338/345 looper letters, 36 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-11-19 07:57:25,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 45 transitions, 281 flow [2023-11-19 07:57:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:57:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 744 transitions. [2023-11-19 07:57:25,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35942028985507246 [2023-11-19 07:57:25,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 744 transitions. [2023-11-19 07:57:25,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 744 transitions. [2023-11-19 07:57:25,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:25,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 744 transitions. [2023-11-19 07:57:25,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 07:57:25,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 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 07:57:25,890 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 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 07:57:25,890 INFO L175 Difference]: Start difference. First operand has 66 places, 23 transitions, 111 flow. Second operand 6 states and 744 transitions. [2023-11-19 07:57:25,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 45 transitions, 281 flow [2023-11-19 07:57:25,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 233 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-19 07:57:25,895 INFO L231 Difference]: Finished difference. Result has 54 places, 30 transitions, 143 flow [2023-11-19 07:57:25,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=54, PETRI_TRANSITIONS=30} [2023-11-19 07:57:25,896 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2023-11-19 07:57:25,896 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 30 transitions, 143 flow [2023-11-19 07:57:25,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.875) internal successors, (951), 8 states have internal predecessors, (951), 0 states have call successors, (0), 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 07:57:25,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:25,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:25,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:57:25,897 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-11-19 07:57:25,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash 188256776, now seen corresponding path program 2 times [2023-11-19 07:57:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937457494] [2023-11-19 07:57:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:27,549 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 07:57:27,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:27,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937457494] [2023-11-19 07:57:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937457494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:27,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:27,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:57:27,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640466067] [2023-11-19 07:57:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:27,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:27,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72